Signed-off-by: Mark Bolwell <mark.bollyuk@gmail.com>
This commit is contained in:
Mark Bolwell 2022-01-07 09:06:18 +00:00
commit a54b5216eb
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GPG key ID: F734FDFC154B83FB
87 changed files with 7693 additions and 0 deletions

22
tasks/LE_audit_setup.yml Normal file
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---
- name: Download audit binary
get_url:
url: "{{ goss_url }}"
dest: "{{ audit_bin }}"
owner: root
group: root
checksum: "{{ goss_version.checksum }}"
mode: 0555
when:
- get_goss_file == 'download'
- name: copy audit binary
copy:
src:
dest: "{{ audit_bin }}"
mode: 0555
owner: root
group: root
when:
- get_goss_file == 'copy'

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---
- name: "SCORED | 6.2.8 | PATCH | Ensure users' home directories permissions are 750 or more restrictive"
find:
paths:
- "{{ homedir }}"
recurse: true
file_type: any
register: rhel_09_6_2_8_results
when:
- rhel9cis_rule_6_2_8|bool
tags:
- level1
- patch
- rule_6.2.8
- name: "SCORED | 6.2.8 | PATCH | Ensure users' home directories permissions are 750 or more restrictive"
file:
path: "{{ line_item.path }}"
mode: 0640
loop: "{{ rhel_09_6_2_8_results.files }}"
loop_control:
label: "{{ line_item.path }}"
loop_var: line_item
when:
- rhel_09_6_2_8_results.files.isreg is defined
- rhel9cis_rule_6_2_8|bool
tags:
- level1
- patch
- rule_6.2.8
- name: "SCORED | 6.2.8 | PATCH | Ensure users' home directories permissions are 750 or more restrictive"
file:
path: "{{ line_item.path }}"
mode: 0750
loop: "{{ rhel_09_6_2_8_results.files }}"
loop_control:
label: "{{ line_item.path }}"
loop_var: line_item
when:
- rhel_09_6_2_8_results.files.isdir is defined
- rhel9cis_rule_6_2_8|bool
tags:
- level1
- patch
- rule_6.2.8

36
tasks/check_prereqs.yml Normal file
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---
- name: "PREREQ | Add the required packages | Python 3"
block:
- name: Check if python36-rpm package installed
command: rpm -q python36-rpm
failed_when: ( python36_rpm_present.rc not in [ 0, 1 ] )
changed_when: false
args:
warn: false
register: python36_rpm_present
- name: Add the EPEL repository required for the python36-rpm pkg
package:
name: https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
state: present
register: epel_installed
when:
- python36_rpm_present.rc != '0'
- name: "PREREQ | Check required packages installed | Python3 "
package:
name: "{{ item }}"
state: present
register: python3reqs_installed
loop:
- python36-rpm
- libselinux-python3
- name: Disable Epel repo if installed earlier
command: yum-config-manager disable epel
when: epel_installed.changed
when:
- ( ansible_python.version.major == 3 and ansible_python.version.minor == 6 )
vars:
ansible_python_interpreter: "{{ python2_bin }}"

111
tasks/main.yml Normal file
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---
# tasks file for RHEL9-CIS
- name: Check OS version and family
fail:
msg: "This role can only be run against RHEL 8. {{ ansible_distribution }} {{ ansible_distribution_major_version }} is not supported."
when:
- ansible_os_family == 'RedHat'
- ansible_distribution_major_version is version_compare('9', '!=')
tags:
- always
- name: Check ansible version
fail:
msg: You must use ansible 2.9 or greater
when: not ansible_version.full is version_compare('2.9', '>=')
tags:
- always
- name: Check crypto-policy input
assert:
that: rhel9cis_crypto_policy in rhel9cis_allowed_crypto_policies
- name: Check rhel9cis_bootloader_password_hash variable has been changed
assert:
that: rhel9cis_bootloader_password_hash != 'grub.pbkdf2.sha512.changethispassword'
msg: "This role will not be able to run single user password commands as rhel9cis_bootloader_password_hash variable has not been set"
when:
- rhel9cis_set_boot_pass
- rhel9cis_rule_1_5_2
- name: "check sugroup exists if used"
block:
- name: "Check su group exists if defined"
shell: grep -w "{{ rhel9cis_sugroup }}" /etc/group
register: sugroup_exists
changed_when: false
failed_when: sugroup_exists.rc >= 2
tags:
- skip_ansible_lint
- name: Check sugroup if defined exists before continuing
assert:
that: sugroup_exists.rc == 0
msg: "The variable rhel9cis_sugroup is defined but does not exist please rectify"
when:
- rhel9cis_sugroup is defined
- rhel9cis_rule_5_7
tags:
- rule_5.7
- include: prelim.yml
become: yes
tags:
- prelim_tasks
- always
- import_tasks: pre_remediation_audit.yml
when:
- run_audit
- name: Gather the package facts
package_facts:
manager: auto
tags:
- always
- include: parse_etc_password.yml
become: yes
when: rhel9cis_section6
- include: section_1/main.yml
become: yes
when: rhel9cis_section1
tags:
- rhel9cis_section1
- include: section_2/main.yml
become: yes
when: rhel9cis_section2
- include: section_3/main.yml
become: yes
when: rhel9cis_section3
- include: section_4/main.yml
become: yes
when: rhel9cis_section4
- include: section_5/main.yml
become: yes
when: rhel9cis_section5
- include: section_6/main.yml
become: yes
when: rhel9cis_section6
- include: post.yml
become: yes
tags:
- post_tasks
- always
- import_tasks: post_remediation_audit.yml
when:
- run_audit
- name: Show Audit Summary
debug:
msg: "{{ audit_results.split('\n') }}"
when:
- run_audit

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---
- name: "PRELIM | 5.5.2 | 6.2.7 | 6.2.8 | 6.2.20 | Parse /etc/passwd"
block:
- name: "PRELIM | 5.5.2 | 6.2.7 | 6.2.8 | 6.2.20 | Parse /etc/passwd"
command: cat /etc/passwd
changed_when: no
check_mode: no
register: rhel9cis_passwd_file_audit
- name: "PRELIM | 5.5.2 | 6.2.7 | 6.2.8 | 6.2.20 | Split passwd entries"
set_fact:
rhel9cis_passwd: "{{ rhel9cis_passwd_file_audit.stdout_lines | map('regex_replace', ld_passwd_regex, ld_passwd_yaml) | map('from_yaml') | list }}"
with_items: "{{ rhel9cis_passwd_file_audit.stdout_lines }}"
vars:
ld_passwd_regex: >-
^(?P<id>[^:]*):(?P<password>[^:]*):(?P<uid>[^:]*):(?P<gid>[^:]*):(?P<gecos>[^:]*):(?P<dir>[^:]*):(?P<shell>[^:]*)
ld_passwd_yaml: |
id: >-4
\g<id>
password: >-4
\g<password>
uid: \g<uid>
gid: \g<gid>
gecos: >-4
\g<gecos>
dir: >-4
\g<dir>
shell: >-4
\g<shell>
tags:
- always

56
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---
# Post tasks
- name: Perform DNF package cleanup
dnf:
autoremove: yes
changed_when: no
- name: trigger update sysctl
command: /bin/true
changed_when: false
check_mode: false
notify: update sysctl
when:
- rhel9cis_rule_1_6_1 or
rhel9cis_rule_1_6_2 or
rhel9cis_rule_3_1_2 or
rhel9cis_rule_3_1_2 or
rhel9cis_rule_3_2_1 or
rhel9cis_rule_3_2_2 or
rhel9cis_rule_3_2_3 or
rhel9cis_rule_3_2_4 or
rhel9cis_rule_3_2_5 or
rhel9cis_rule_3_2_6 or
rhel9cis_rule_3_2_7 or
rhel9cis_rule_3_2_8 or
rhel9cis_rule_3_2_9
tags:
- sysctl
- name: trigger update auditd
command: /bin/true
notify: update auditd
changed_when: false
check_mode: false
when:
- rhel9cis_rule_4_1_3 or
rhel9cis_rule_4_1_4 or
rhel9cis_rule_4_1_5 or
rhel9cis_rule_4_1_6 or
rhel9cis_rule_4_1_7 or
rhel9cis_rule_4_1_8 or
rhel9cis_rule_4_1_9 or
rhel9cis_rule_4_1_10 or
rhel9cis_rule_4_1_11 or
rhel9cis_rule_4_1_12
tags:
- auditd
- name: flush handlers
meta: flush_handlers
- name: Reboot host
reboot:
when:
- not rhel9cis_skip_reboot

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---
- name: "Post Audit | Run post_remediation {{ benchmark }} audit"
shell: "{{ audit_conf_dir }}/run_audit.sh -v {{ audit_vars_path }} -o {{ post_audit_outfile }} -g {{ group_names }}"
vars:
warn: false
- name: Post Audit | ensure audit files readable by users
file:
path: "{{ item }}"
mode: 0644
state: file
loop:
- "{{ post_audit_outfile }}"
- "{{ pre_audit_outfile }}"
- name: Post Audit | Capture audit data if json format
block:
- name: "capture data {{ post_audit_outfile }}"
command: "cat {{ post_audit_outfile }}"
register: post_audit
changed_when: false
- name: Capture post-audit result
set_fact:
post_audit_summary: "{{ post_audit.stdout | from_json |json_query(summary) }}"
vars:
summary: 'summary."summary-line"'
when:
- audit_format == "json"
- name: Post Audit | Capture audit data if documentation format
block:
- name: "Post Audit | capture data {{ post_audit_outfile }}"
command: "tail -2 {{ post_audit_outfile }}"
register: post_audit
changed_when: false
- name: Post Audit | Capture post-audit result
set_fact:
post_audit_summary: "{{ post_audit.stdout_lines }}"
when:
- audit_format == "documentation"

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---
- name: Pre Audit | Setup the audit
include_tasks: LE_audit_setup.yml
when:
- setup_audit
tags:
- setup_audit
- name: "Pre Audit | Ensure {{ audit_conf_dir }} exists"
file:
path: "{{ audit_conf_dir }}"
state: directory
mode: '0755'
- name: Pre Audit | If using git for content set up
block:
- name: Pre Audit | Install git (rh8 python3)
package:
name: git
state: present
when: ansible_distribution_major_version == 8
- name: Pre Audit | Install git (rh7 python2)
package:
name: git
state: present
vars:
ansible_python_interpreter: "{{ python2_bin }}"
when: ansible_distribution_major_version == 7
- name: Pre Audit | retrieve audit content files from git
git:
repo: "{{ audit_file_git }}"
dest: "{{ audit_conf_dir }}"
version: "{{ audit_git_version }}"
when:
- audit_content == 'git'
- name: Pre Audit | copy to audit content files to server
copy:
src: "{{ audit_local_copy }}"
dest: "{{ audit_conf_dir }}"
mode: 0644
when:
- audit_content == 'copy'
- name: Pre Audit | get audit content from url
get_url:
url: "{{ audit_files_url }}"
dest: "{{ audit_conf_dir }}"
when:
- audit_content == 'get_url'
- name: Pre Audit | Check Goss is available
block:
- name: Pre Audit | Check for goss file
stat:
path: "{{ audit_bin }}"
register: goss_available
- name: Pre Audit | If audit ensure goss is available
assert:
msg: "Audit has been selected: unable to find goss binary at {{ audit_bin }}"
when:
- not goss_available.stat.exists
when:
- run_audit
- name: "Pre Audit | Check whether machine is UEFI-based"
stat:
path: /sys/firmware/efi
register: rhel9_efi_boot
tags:
- goss_template
- name: Pre Audit | Copy ansible default vars values to test audit
template:
src: ansible_vars_goss.yml.j2
dest: "{{ audit_vars_path }}"
mode: 0600
when:
- run_audit
tags:
- goss_template
- name: "Pre Audit | Run pre_remediation {{ benchmark }} audit"
shell: "{{ audit_conf_dir }}/run_audit.sh -v {{ audit_vars_path }} -o {{ pre_audit_outfile }} -g {{ group_names }}"
vars:
warn: false
- name: Pre Audit | Capture audit data if json format
block:
- name: "Pre Audit | capture data {{ pre_audit_outfile }}"
command: "cat {{ pre_audit_outfile }}"
register: pre_audit
changed_when: false
- name: Pre Audit | Capture pre-audit result
set_fact:
pre_audit_summary: "{{ pre_audit.stdout | from_json |json_query(summary) }}"
vars:
summary: 'summary."summary-line"'
when:
- audit_format == "json"
- name: Pre Audit | Capture audit data if documentation format
block:
- name: "Pre Audit | capture data {{ pre_audit_outfile }}"
command: "tail -2 {{ pre_audit_outfile }}"
register: pre_audit
changed_when: false
- name: Pre Audit | Capture pre-audit result
set_fact:
pre_audit_summary: "{{ pre_audit.stdout_lines }}"
when:
- audit_format == "documentation"

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---
# Preliminary tasks that should always be run
# List users in order to look files inside each home directory
- name: "PRELIM | List users accounts"
command: "awk -F: '{print $1}' /etc/passwd"
args:
warn: no
changed_when: no
check_mode: no
register: users
- name: "PRELIM | Gather accounts with empty password fields"
shell: "cat /etc/shadow | awk -F: '($2 == \"\" ) {j++;print $1; } END {exit j}'"
args:
warn: no
changed_when: no
check_mode: no
register: empty_password_accounts
- name: "PRELIM | Gather UID 0 accounts other than root"
shell: "cat /etc/passwd | awk -F: '($3 == 0 && $1 != \"root\") {i++;print $1 } END {exit i}'"
args:
warn: no
changed_when: no
check_mode: no
register: uid_zero_accounts_except_root
- name: "PRELIM | Gather system-wide crypto-policy"
shell: update-crypto-policies --show
args:
warn: no
changed_when: no
check_mode: no
register: system_wide_crypto_policy
- name: "PRELIM | if systemd coredump"
stat:
path: /etc/systemd/coredump.conf
register: systemd_coredump
when:
- rhel9cis_rule_1_6_1
- name: "PRELIM | Section 1.1 | Create list of mount points"
set_fact:
mount_names: "{{ ansible_mounts | map(attribute='mount') | list }}"
- name: "PRELIM | Section 4.1 | Configure System Accounting (auditd)"
package:
name: audit
state: present
when: rhel9cis_level_2
- name: "PRELIM | 4.1.12 | Ensure successful file system mounts are collected"
shell: for i in $(df | grep '^/dev' | awk '{ print $NF }'); do find $i -xdev -type f -perm -4000 -o -type f -perm -2000 2>/dev/null; done
changed_when: false
failed_when: false
check_mode: no
register: priv_procs
tags:
- always
- name: "PRELIM | Section 5.1 | Configure cron"
package:
name: cronie
state: present
- name: "PRELIM | Install authconfig"
package:
name: authconfig
state: present
when:
- rhel9cis_use_authconfig
- rhel9cis_rule_5_3_1 or
rhel9cis_rule_5_3_2 or
rhel9cis_rule_5_3_3
- name: "PRELIM | Set facts based on boot type"
block:
- name: "PRELIM | Check whether machine is UEFI-based"
stat:
path: /sys/firmware/efi
register: rhel_09_efi_boot
- name: "PRELIM | AUDIT | set legacy boot and grub path | Bios"
set_fact:
rhel9cis_legacy_boot: true
grub2_path: /etc/grub2.cfg
when: not rhel_09_efi_boot.stat.exists
- name: "PRELIM | set grub fact | UEFI"
set_fact:
grub2_path: /etc/grub2-efi.cfg
when: rhel_09_efi_boot.stat.exists
# - name: debug legacy boot var
# debug:
# msg: |
# legacy_boot={{ rhel9cis_legacy_boot }}
# grub2_path={{ grub2_path }}
- name: "PRELIM | AUDIT | Ensure permissions on bootloader config are configured | Get grub config file stats"
stat:
path: "{{ grub2_path }}"
changed_when: false
register: grub_cfg
# - name: debug grub stat
# debug:
# var: grub_cfg.stat
- name: "PRELIM | Check for rhnsd service"
shell: "systemctl show rhnsd | grep LoadState | cut -d = -f 2"
changed_when: false
check_mode: false
register: rhnsd_service_status
when:
- rhel9cis_rule_1_2_2
tags:
- skip_ansible_lint

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---
- name: "1.1.1.1 | L1 | PATCH | Ensure mounting of cramfs filesystems is disabled"
block:
- name: "1.1.1.1 | L1 | PATCH | Ensure mounting of cramfs filesystems is disabled | Edit modprobe config"
lineinfile:
dest: /etc/modprobe.d/CIS.conf
regexp: "^(#)?install cramfs(\\s|$)"
line: "install cramfs /bin/true"
create: yes
mode: 0600
- name: "1.1.1.1 | L1 | PATCH | Ensure mounting of cramfs filesystems is disabled | Disable cramfs"
modprobe:
name: cramfs
state: absent
when: ansible_connection != 'docker'
when:
- rhel9cis_rule_1_1_1_1
tags:
- level1-server
- level1-workstation
- scored
- patch
- rule_1.1.1.1
- cramfs
- name: "1.1.1.2 | L2 | PATCH | Ensure mounting of vFAT filesystems is limited"
block:
- name: "1.1.1.2 | L2 | PATCH | Ensure mounting of vFAT filesystems is limited | Edit modprobe config"
lineinfile:
dest: /etc/modprobe.d/CIS.conf
regexp: "^(#)?install vfat(\\s|$)"
line: "install vfat /bin/true"
create: yes
mode: 0600
- name: "1.1.1.2 | L2 | PATCH | Ensure mounting of vFAT filesystems is limited | Disable vFAT"
modprobe:
name: vfat
state: absent
when: ansible_connection != 'docker'
when:
- rhel9cis_rule_1_1_1_2
- rhel9cis_legacy_boot
tags:
- level2-server
- level2-workstation
- scored
- patch
- rule_1.1.1.2
- vfat
- name: "1.1.1.3 | L1 | PATCH | Ensure mounting of squashfs filesystems is disabled"
block:
- name: "1.1.1.3 | L1 | PATCH | Ensure mounting of squashfs filesystems is disabled | Edit modprobe config"
lineinfile:
dest: /etc/modprobe.d/CIS.conf
regexp: "^(#)?install squashfs(\\s|$)"
line: "install squashfs /bin/true"
create: yes
mode: 0600
- name: "1.1.1.3 | L1 | PATCH | Ensure mounting of squashfs filesystems is disabled | Disable squashfs"
modprobe:
name: squashfs
state: absent
when: ansible_connection != 'docker'
when:
- rhel9cis_rule_1_1_1_3
tags:
- level1-server
- level1-workstation
- scored
- patch
- rule_1.1.1.3
- squashfs
- name: "1.1.1.4 | L1 | PATCH | Ensure mounting of udf filesystems is disabled"
block:
- name: "1.1.1.4 | L1 | PATCH | Ensure mounting of udf filesystems is disable | Edit modprobe config"
lineinfile:
dest: /etc/modprobe.d/CIS.conf
regexp: "^(#)?install udf(\\s|$)"
line: "install udf /bin/true"
create: yes
mode: 0600
- name: "1.1.1.4 | L1 | PATCH | Ensure mounting of udf filesystems is disable | Disable udf"
modprobe:
name: udf
state: absent
when: ansible_connection != 'docker'
when:
- rhel9cis_rule_1_1_1_4
tags:
- level1-server
- level1-workstation
- scored
- patch
- rule_1.1.1.4
- udf

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---
- name: |
"SCORED | 1.1.2 | PATCH | Ensure /tmp is configured"
"SCORED | 1.1.3 | PATCH | Ensure nodev option set on /tmp partition"
"SCORED | 1.1.4 | PATCH | Ensure nosuid option set on /tmp partition"
"SCORED | 1.1.5 | PATCH | Ensure noexec option set on /tmp partition"
"via fstab"
mount:
name: /tmp
src: "{{ item.device }}"
fstype: "{{ item.fstype }}"
state: present
opts: defaults,{% if rhel9cis_rule_1_1_3 %}noexec,{% endif %}{% if rhel9cis_rule_1_1_4 %}nodev,{% endif %}{% if rhel9cis_rule_1_1_5 %}nosuid{% endif %}
notify: remount tmp
loop: "{{ ansible_mounts }}"
when:
- item.mount == "/tmp"
- not rhel9cis_tmp_svc
- rhel9cis_rule_1_1_2 or
rhel9cis_rule_1_1_3 or
rhel9cis_rule_1_1_4 or
rhel9cis_rule_1_1_5
tags:
- level1-server
- level1-workstation
- scored
- patch
- mounts
- rule_1.1.3
- rule_1.1.4
- rule_1.1.5
- name: |
"SCORED | 1.1.2 | PATCH | Ensure /tmp is configured"
"SCORED | 1.1.3 | PATCH | Ensure nodev option set on /tmp partition"
"SCORED | 1.1.4 | PATCH | Ensure nosuid option set on /tmp partition"
"SCORED | 1.1.5 | PATCH | Ensure noexec option set on /tmp partition"
"via systemd"
template:
src: etc/systemd/system/tmp.mount.j2
dest: /etc/systemd/system/tmp.mount
owner: root
group: root
mode: 0644
notify: systemd restart tmp.mount
when:
- rhel9cis_tmp_svc
- rhel9cis_rule_1_1_2 or
rhel9cis_rule_1_1_3 or
rhel9cis_rule_1_1_4 or
rhel9cis_rule_1_1_5
tags:
- level1-server
- level1-workstation
- scored
- patch
- mounts
- rule_1.1.3
- rule_1.1.4
- rule_1.1.5
- name: "1.1.6 | L2 | AUDIT | Ensure separate partition exists for /var"
block:
- name: "1.1.6 | L2 | AUDIT | Ensure separate partition exists for /var | Absent"
debug:
msg: "Warning! {{ required_mount }} doesn't exist. This is a manual task"
register: var_mount_absent
changed_when: var_mount_absent.skipped is undefined
when:
- required_mount not in mount_names
- name: "1.1.6 | L2 | AUDIT | Ensure separate partition exists for /var | Present"
debug:
msg: "Congratulations: {{ required_mount }} exists."
when:
- required_mount in mount_names
vars:
required_mount: '/var'
when:
- rhel9cis_rule_1_1_6
tags:
- level2-server
- level2-workstation
- scored
- patch
- mounts
- rule_1.1.6
- name: "1.1.7 | L2 | AUDIT | Ensure separate partition exists for /var/tmp | skips if mount absent"
block:
- name: "1.1.7 | L2 | AUDIT | Ensure separate partition exists for /var/tmp | Absent"
debug:
msg: "Warning! {{ required_mount }} doesn't exist. This is a manual task"
register: var_tmp_mount_absent
changed_when: var_tmp_mount_absent.skipped is undefined
when:
- required_mount not in mount_names
- name: "1.1.7 | L2 | AUDIT | Ensure separate partition exists for /var/tmp | Present"
debug:
msg: "Congratulations: {{ required_mount }} exists."
register: var_tmp_mount_present
when:
- required_mount in mount_names
vars:
required_mount: '/var/tmp'
when:
- rhel9cis_rule_1_1_7
tags:
- level2-server
- level2-workstation
- scored
- audit
- mounts
- rule_1.1.7
- name: |
"1.1.8 | L1 | PATCH | Ensure nodev option set on /var/tmp partition | skips if mount absent"
"1.1.9 | L1 | PATCH | Ensure nosuid option set on /var/tmp partition | skips if mount absent"
"1.1.10 | L1 | PATCH | Ensure noexec option set on /var/tmp partition | skips if mount absent"
mount:
name: /var/tmp
src: "{{ item.device }}"
fstype: "{{ item.fstype }}"
state: present
opts: defaults,{% if rhel9cis_rule_1_1_10 %}noexec,{% endif %}{% if rhel9cis_rule_1_1_8 %}nodev,{% endif %}{% if rhel9cis_rule_1_1_9 %}nosuid{% endif %}
loop: "{{ ansible_mounts }}"
when:
- var_tmp_mount_present is defined
- item.mount == "/var/tmp"
- rhel9cis_rule_1_1_7 # This is required so the check takes place
- rhel9cis_rule_1_1_8 or
rhel9cis_rule_1_1_9 or
rhel9cis_rule_1_1_10
tags:
- level1-server
- level1-workstation
- scored
- patch
- mounts
- skip_ansible_lint
- name: "1.1.11 | L2 | AUDIT | Ensure separate partition exists for /var/log"
block:
- name: "1.1.11 | L2 | AUDIT | Ensure separate partition exists for /var/log | Absent"
debug:
msg: "Warning! {{ required_mount }} doesn't exist. This is a manual task"
register: var_log_mount_absent
changed_when: var_log_mount_absent.skipped is undefined
when:
- required_mount not in mount_names
- name: "1.1.11 | L2 | AUDIT | Ensure separate partition exists for /var/log | Present"
debug:
msg: "Congratulations: {{ required_mount }} exists."
when:
- required_mount in mount_names
vars:
required_mount: '/var/log'
when:
- rhel9cis_rule_1_1_11
tags:
- level2-server
- level2-workstation
- scored
- audit
- mounts
- rule_1.1.11
- skip_ansible_lint
- name: "1.1.12 | L2 | AUDIT | Ensure separate partition exists for /var/log/audit"
block:
- name: "1.1.12 | L2 | AUDIT | Ensure separate partition exists for /var/log/audit | Absent"
debug:
msg: "Warning! {{ required_mount }} doesn't exist. This is a manual task"
register: var_log_audit_mount_absent
changed_when: var_log_audit_mount_absent.skipped is undefined
when:
- required_mount not in mount_names
- name: "1.1.12 | L2 | AUDIT | Ensure separate partition exists for /var/log/audit | Present"
debug:
msg: "Congratulations: {{ required_mount }} exists."
when:
- required_mount in mount_names
vars:
required_mount: '/var/log/audit'
when:
- rhel9cis_rule_1_1_12
tags:
- level2-server
- level2-workstation
- scored
- audit
- mounts
- rule_1.1.12
- name: "1.1.13 | L2 | AUDIT | Ensure separate partition exists for /home"
block:
- name: "1.1.13 | L2 | AUDIT | Ensure separate partition exists for /home | Absent"
debug:
msg: "Warning! {{ required_mount }} doesn't exist. This is a manual task"
register: home_mount_absent
changed_when: home_mount_absent.skipped is undefined
when:
- required_mount not in mount_names
- name: "1.1.13 | L2 | AUDIT | Ensure separate partition exists for /home | Present"
debug:
msg: "Congratulations: {{ required_mount }} exists."
register: home_mount_present
when:
- required_mount in mount_names
vars:
required_mount: '/home'
when:
- rhel9cis_rule_1_1_13
tags:
- level2-server
- level2-workstation
- scored
- audit
- mounts
- rule_1.1.13
- skip_ansible_lint
- name: "1.1.14 | L1 | PATCH | Ensure nodev option set on /home partition | skips if mount absent"
mount:
name: /home
src: "{{ item.device }}"
fstype: "{{ item.fstype }}"
state: present
opts: defaults,{% if rhel9cis_rule_1_1_14 %}nodev{% endif %}
loop: "{{ ansible_mounts }}"
when:
- home_mount_present is defined
- item.mount == "/home"
- rhel9cis_rule_1_1_14
tags:
- level1-server
- level1-workstation
- scored
- patch
- mounts
- rule_1.1.13
- skip_ansible_lint
- name: |
"1.1.15 | L1 | PATCH | Ensure nodev option set on /dev/shm partition | skips if mount absent
1.1.16 | L1 | PATCH | Ensure nosuid option set on /dev/shm partition | skips if mount absent
1.1.17 | L1 | PATCH | Ensure noexec option set on /dev/shm partition | skips if mount absent"
block:
- name: |
"1.1.15 | L1 | AUDIT | Ensure nodev option set on /dev/shm partition | Check for /dev/shm existence
1.1.16 | L1 | AUDIT | Ensure nosuid option set on /dev/shm partition | Check for /dev/shm existence
1.1.17 | L1 | AUDIT | Ensure noexec option set on /dev/shm partition | Check for /dev/shm existence"
shell: mount -l | grep -E '\s/dev/shm\s'
changed_when: false
failed_when: false
check_mode: no
register: rhel9cis_1_1_15_dev_shm_status
- name: |
"1.1.15 | L1 | PATCH | Ensure nodev option set on /dev/shm partition | skips if mount absent
1.1.16 | L1 | PATCH | Ensure nosuid option set on /dev/shm partition | skips if mount absent
1.1.17 | L1 | PATCH | Ensure noexec option set on /dev/shm partition | skips if mount absent"
mount:
name: /dev/shm
src: tmpfs
fstype: tmpfs
state: mounted
opts: defaults,{% if rhel9cis_rule_1_1_17 %}noexec,{% endif %}{% if rhel9cis_rule_1_1_15 %}nodev,{% endif %}{% if rhel9cis_rule_1_1_16 %}nosuid{% endif %}
when: "'dev/shm' in rhel9cis_1_1_15_dev_shm_status.stdout"
when:
- rhel9cis_rule_1_1_15 or
rhel9cis_rule_1_1_16 or
rhel9cis_rule_1_1_17
tags:
- level1-server
- level1-workstation
- scored
- patch
- mounts
- rule_1.1.15
- rule_1.1.16
- rule_1.1.17
- name: |
"1.1.18 | L1 | PATCH | Ensure nodev option set on removable media partitions"
"1.1.19 | L1 | PATCH | Ensure nosuid option set on removable media partitions"
"1.1.20 | L1 | PATCH | Ensure noexec option set on removable media partitions"
debug:
msg: "--> Not relevant"
changed_when: false
when:
- rhel9cis_rule_1_1_18 or
rhel9cis_rule_1_1_19 or
rhel9cis_rule_1_1_20
tags:
- level1-server
- level1-workstation
- notscored
- audit
- mounts
- rule_1.1.18
- rule_1.1.19
- rule_1.1.20
- name: "1.1.21 | L1 | PATCH | Ensure sticky bit is set on all world-writable directories"
shell: df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -type d -perm -0002 2>/dev/null | xargs chmod a+t
args:
warn: no
changed_when: false
failed_when: false
when:
- rhel9cis_rule_1_1_21
tags:
- skip_ansible_lint
- level1-server
- level1-workstation
- patch
- stickybits
- permissons
- rule_1.1.21
- name: "1.1.22 | L1 | PATCH | Disable Automounting"
service:
name: autofs
enabled: no
when:
- not rhel9cis_allow_autofs
- "'autofs' in ansible_facts.packages"
- rhel9cis_rule_1_1_22
tags:
- level1-server
- level2-workstation
- patch
- mounts
- automounting
- rule_1.1.22
- name: "1.1.23 | L1 | PATCH | Disable USB Storage"
block:
- name: "1.1.23 | L1 | PATCH | Disable USB Storage | Edit modprobe config"
lineinfile:
dest: /etc/modprobe.d/CIS.conf
regexp: "^(#)?install usb-storage(\\s|$)"
line: "install usb-storage /bin/true"
create: yes
owner: root
group: root
mode: 0600
- name: "1.1.23 | L1 | PATCH | Disable USB Storage | Edit modprobe config"
modprobe:
name: usb-storage
state: absent
when:
- rhel9cis_rule_1_1_23
tags:
- level1-server
- level2-workstation
- patch
- mounts
- removable_storage
- rule_1.1.23

View file

@ -0,0 +1,15 @@
---
- name: "1.10 | L1 | PATCH | Ensure system-wide crypto policy is not legacy"
shell: |
update-crypto-policies --set "{{ rhel9cis_crypto_policy }}"
update-crypto-policies
when:
- rhel9cis_rule_1_10
- system_wide_crypto_policy['stdout'] == 'LEGACY'
tags:
- level1-server
- level1-workstation
- no system_is_ec2
- patch
- rule_1.10

View file

@ -0,0 +1,15 @@
---
- name: "1.11 | L2 | PATCH | Ensure system-wide crypto policy is FUTURE or FIPS"
shell: |
update-crypto-policies --set "{{ rhel9cis_crypto_policy }}"
update-crypto-policies
when:
- rhel9cis_rule_1_11
- system_wide_crypto_policy['stdout'] not in rhel9cis_allowed_crypto_policies
tags:
- level2-server
- level2-workstation
- not system_is_ec2
- patch
- rule_1.11

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@ -0,0 +1,100 @@
---
- name: "1.2.1 | L1 | PATCH | Ensure Red Hat Subscription Manager connection is configured"
redhat_subscription:
state: present
username: "{{ rhel9cis_rh_sub_user }}"
password: "{{ rhel9cis_rh_sub_password }}"
auto_attach: true
no_log: true
when:
- ansible_distribution == "RedHat"
- rhel9cis_rhnsd_required
- rhel9cis_rule_1_2_1
tags:
- level1-server
- level1-workstation
- notscored
- patch
- rule_1.2.1
- skip_ansible_lint # Added as no_log still errors on ansuible-lint
- name: "1.2.2 | L1 | PATCH | Disable the rhnsd Daemon"
service:
name: rhnsd
state: stopped
enabled: no
masked: true
when:
- ansible_distribution == "RedHat"
- rhnsd_service_status.stdout == "loaded" and not rhel9cis_rhnsd_required
- rhel9cis_rule_1_2_2
tags:
- level1-server
- level1-workstation
- notscored
- patch
- rule_1.2.2
- name: "1.2.3 | L1 | AUDIT | Ensure GPG keys are configured"
command: gpg --quiet --with-fingerprint /etc/pki/rpm-gpg/RPM-GPG-KEY-{{ ansible_distribution|lower }}-release
when:
- rhel9cis_rule_1_2_3
- ansible_distribution == "RedHat"
tags:
- level1-server
- level1-workstation
- notscored
- patch
- rule_1.2.3
- name: "1.2.4 | L1 | PATCH | Ensure gpgcheck is globally activated"
block:
- name: "1.2.4 | L1 | AUDIT | Ensure gpgcheck is globally activated | Find repos"
find:
paths: /etc/yum.repos.d
patterns: "*.repo"
register: yum_repos
changed_when: false
- name: "1.2.4 | L1 | PATCH | Ensure gpgcheck is globally activated | Update yum.repos"
replace:
name: "{{ item.path }}"
regexp: "^gpgcheck=0"
replace: "gpgcheck=1"
with_items:
- "{{ yum_repos.files }}"
when:
- rhel9cis_rule_1_2_4
tags:
- level1-server
- level1-workstation
- scored
- patch
- rule_1.2.4
- name: "1.2.5 | L1 | Ensure package manager repositories are configured"
block:
- name: "1.2.5 | L1 | AUDIT | Ensure package manager repositories are configured | Get repo list"
command: dnf repolist
changed_when: false
failed_when: false
register: dnf_configured
check_mode: no
args:
warn: false
- name: "1.2.5 | L1 | AUDIT | Ensure package manager repositories are configured | Display repo list"
debug:
msg:
- "Alert! Below are the configured repos. Please review and make sure all align with site policy"
- "{{ dnf_configured.stdout_lines }}"
when:
- rhel9cis_rule_1_2_5
tags:
- level1-server
- level1-workstation
- notscored
- patch
- rule_1.2.5
- skip_ansible_lint

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@ -0,0 +1,44 @@
---
- name: "1.3.1 | L1 | PATCH | Ensure sudo is installed"
package:
name: sudo
state: present
when:
- rhel9cis_rule_1_3_1
tags:
- level1-server
- level1-workstation
- scored
- sudo
- patch
- rule_1.3.1
- name: "1.3.2 | L1 | PATCH | Ensure sudo commands use pty"
lineinfile:
dest: /etc/sudoers
line: "Defaults use_pty"
state: present
when:
- rhel9cis_rule_1_3_2
tags:
- level1-server
- level1-workstation
- scored
- patch
- rule_1.3.2
- name: "1.3.3 | L1 | PATCH | Ensure sudo log file exists"
lineinfile:
dest: /etc/sudoers
regexp: '^Defaults logfile='
line: 'Defaults logfile="{{ rhel9cis_varlog_location }}"'
state: present
when:
- rhel9cis_rule_1_3_3
tags:
- level1-server
- level1-workstation
- scored
- patch
- rule_1.3.3

View file

@ -0,0 +1,50 @@
---
- name: "1.4.1 | L1 | PATCH | Ensure AIDE is installed"
block:
- name: "1.4.1 | L1 | PATCH | Ensure AIDE is installed | Install AIDE"
package:
name: aide
state: present
- name: "1.4.1 | L1 | PATCH | Ensure AIDE is installed | Configure AIDE"
command: /usr/sbin/aide --init -B 'database_out=file:/var/lib/aide/aide.db.gz'
changed_when: false
failed_when: false
async: 45
poll: 0
args:
creates: /var/lib/aide/aide.db.gz
when: not ansible_check_mode
when:
- rhel9cis_config_aide
- rhel9cis_rule_1_4_1
tags:
- level1-server
- level1-workstation
- scored
- aide
- patch
- rule_1.4.1
- name: "1.4.2 | L1 | PATCH | Ensure filesystem integrity is regularly checked"
cron:
name: Run AIDE integrity check
cron_file: "{{ rhel9cis_aide_cron['cron_file'] }}"
user: "{{ rhel9cis_aide_cron['cron_user'] }}"
minute: "{{ rhel9cis_aide_cron['aide_minute'] | default('0') }}"
hour: "{{ rhel9cis_aide_cron['aide_hour'] | default('5') }}"
day: "{{ rhel9cis_aide_cron['aide_day'] | default('*') }}"
month: "{{ rhel9cis_aide_cron['aide_month'] | default('*') }}"
weekday: "{{ rhel9cis_aide_cron['aide_weekday'] | default('*') }}"
job: "{{ rhel9cis_aide_cron['aide_job'] }}"
when:
- rhel9cis_rule_1_4_2
tags:
- level1-server
- level1-workstation
- scored
- aide
- file_integrity
- patch
- rule_1.4.2

View file

@ -0,0 +1,76 @@
---
- name: "1.5.1 | L1 | PATCH | Ensure permissions on bootloader config are configured"
block:
- name: "1.5.1 | L1 | PATCH | Ensure permissions on bootloader config are configured"
file:
path: "{{ grub_cfg.stat.lnk_source }}"
owner: root
group: root
mode: 0600
- name: "1.5.1 | L1 | PATCH | Ensure permissions on bootloader config are configured | UEFI"
mount:
name: /boot/efi
src: "UUID={{ item.uuid }}"
fstype: vfat
state: present
opts: defaults,umask=0027,fmask=0077,uid=0,gid=0
passno: '0'
loop: "{{ ansible_mounts }}"
when:
- not rhel9cis_legacy_boot
- item.mount == "/boot/efi"
when:
- rhel9cis_rule_1_5_1
- grub_cfg.stat.exists
- grub_cfg.stat.islnk
tags:
- level1-server
- level1-workstation
- scored
- grub
- patch
- rule_1.5.1
- name: "1.5.2 | L1 | PATCH | Ensure bootloader password is set"
copy:
dest: /boot/grub2/user.cfg
content: "GRUB2_PASSWORD={{ rhel9cis_bootloader_password_hash }}"
owner: root
group: root
mode: 0600
notify: grub2cfg
when:
- rhel9cis_set_boot_pass
- grub_pass is defined and grub_pass.passhash is defined
- grub_pass.passhash | length > 0
- rhel9cis_rule_1_5_2
tags:
- level1-server
- level1-workstation
- scored
- grub
- patch
- rule_1.5.2
- name: "1.5.3 | L1 | PATCH | Ensure authentication required for single user mode"
block:
- name: "1.5.3 | L1 | PATCH | Ensure authentication required for single user mode | Emergency service"
lineinfile:
dest: /usr/lib/systemd/system/emergency.service
regexp: '/sbin/sulogin'
line: 'ExecStart=-/usr/lib/systemd/systemd-sulogin-shell emergency'
- name: "1.5.3 | L1 | PATCH | Ensure authentication required for single user mode | Rescue service"
lineinfile:
dest: /usr/lib/systemd/system/rescue.service
regexp: '/sbin/sulogin'
line: 'ExecStart=-/usr/lib/systemd/systemd-sulogin-shell rescue'
when:
- rhel9cis_rule_1_5_3
tags:
- level1-server
- level1-workstation
- patch
- rule_1.5.3

View file

@ -0,0 +1,54 @@
---
- name: "1.6.1 | L1 | PATCH | Ensure core dumps are restricted"
block:
- name: "1.6.1 | L1 | Ensure core dumps are restricted | Update limits.conf file"
lineinfile:
state: present
dest: /etc/security/limits.conf
regexp: '^#?\\*.*core'
line: '* hard core 0'
insertbefore: '^# End of file'
- name: "1.6.1 | L1 | PATCH | Ensure core dumps are restricted | Set active kernel parameter"
debug:
msg: "Control being set via Handler 'update sysctl' which writes to /etc/sysctl.d/99-sysctl.conf"
notify:
- update sysctl
- name: "1.6.1 | L1 | PATCH | Ensure core dumps are restricted | if systemd coredump"
lineinfile:
path: /etc/systemd/coredump.conf
regexp: "{{ item.regexp }}"
line: "{{ item.regexp }}{{ item.line }}"
state: present
with_items:
- {'regexp': 'Storage=', 'line': 'none'}
- {'regexp': 'ProcessSizeMax=', 'line': '0'}
notify:
- systemd_daemon_reload
when:
- systemd_coredump.stat.exists
when:
- rhel9cis_rule_1_6_1
tags:
- level1-server
- level1-workstation
- scored
- sysctl
- patch
- rule_1.6.1
- name: "1.6.2 | L1 | PATCH | Ensure address space layout randomization (ASLR) is enabled"
debug:
msg: "Control being set via Handler 'update sysctl' which writes to /etc/sysctl.d/99-sysctl.conf"
notify:
- update sysctl
when:
- rhel9cis_rule_1_6_2
tags:
- level1-server
- level1-workstation
- scored
- patch
- rule_1.6.2

View file

@ -0,0 +1,115 @@
---
- name: "1.7.1.1 | L2 | PATCH | Ensure SELinux is installed"
package:
name: libselinux
state: present
when:
- rhel9cis_rule_1_7_1_1
tags:
- level2-server
- level2-workstation
- scored
- patch
- rule_1.7.1.1
- name: "1.7.1.2 | L2 | PATCH | Ensure SELinux is not disabled in bootloader configuration"
replace:
dest: /etc/default/grub
regexp: '(selinux|enforcing)\s*=\s*0\s*'
replace: ''
register: selinux_grub_patch
ignore_errors: yes
notify: grub2cfg
when:
- rhel9cis_rule_1_7_1_2
tags:
- level2-server
- level2-workstation
- scored
- patch
- rule_1.7.1.2
- name: "1.7.1.3 | L2 | PATCH | Ensure SELinux policy is configured"
selinux:
conf: /etc/selinux/config
policy: "{{ rhel9cis_selinux_pol }}"
state: enforcing
when:
- not rhel9cis_selinux_disable
- rhel9cis_rule_1_7_1_3
tags:
- level2-server
- level2-workstation
- scored
- selinux
- patch
- rule_1.7.1.3
- name: "1.7.1.4 | L2 | PATCH | Ensure the SELinux state is enforcing"
selinux:
conf: /etc/selinux/config
policy: "{{ rhel9cis_selinux_pol }}"
state: enforcing
when:
- not rhel9cis_selinux_disable
- rhel9cis_rule_1_7_1_4
tags:
- level2-server
- level2-workstation
- scored
- selinux
- patch
- rule_1.7.1.4
- name: "1.7.1.5 | L2 | AUDIT | Ensure no unconfined daemons exist"
block:
- name: "1.7.1.5 | L2 | AUDIT | Ensure no unconfined daemons exist | Find the unconfined daemons"
shell: ps -eZ | grep unconfined_service_t | egrep -vw "tr|ps|egrep|bash|awk" | tr ':' ' ' | awk '{ print $NF }'
register: rhelcis_1_7_1_5_unconf_daemons
failed_when: false
changed_when: false
- name: "1.7.1.5 | L2 | AUDIT | Ensure no unconfined daemons exist | Message on no unconfined daemones"
debug:
msg: "Good News! There are no unconfined daemons found on your system"
when: rhelcis_1_7_1_5_unconf_daemons.stdout | length == 0
- name: "1.7.1.5 | L2 | AUDIT | Ensure no unconfined daemons exist | Message on unconfined daemones"
debug:
msg: "Warning! You have unconfined daemons: {{ rhelcis_1_7_1_5_unconf_daemons.stdout_lines }}"
when: rhelcis_1_7_1_5_unconf_daemons.stdout | length > 0
when:
- rhel9cis_rule_1_7_1_5
tags:
- level2-server
- level2-workstation
- audit
- rule_1.7.1.5
- name: "1.7.1.6 | L2 | PATCH | Ensure SETroubleshoot is not installed"
package:
name: setroubleshoot
state: absent
when:
- rhel9cis_rule_1_7_1_6
- "'setroubleshoot' in ansible_facts.packages"
tags:
- level2-server
- scored
- selinux
- patch
- rule_1.7.1.6
- name: "1.7.1.7 | L2 | PATCH | Ensure the MCS Translation Service (mcstrans) is not installed"
package:
name: mcstrans
state: absent
when:
- rhel9cis_rule_1_7_1_7
tags:
- level2-server
- level2-workstation
- scored
- patch
- rule_1.7.1.7

View file

@ -0,0 +1,96 @@
---
- name: "1.8.1.1 | L1 | PATCH | Ensure message of the day is configured properly"
template:
src: etc/motd.j2
dest: /etc/motd
owner: root
group: root
mode: 0644
when:
- rhel9cis_rule_1_8_1_1
tags:
- level1-server
- level1-workstation
- banner
- patch
- rule_1.8.1.1
- name: "1.8.1.2 | L1 | PATCH | Ensure local login warning banner is configured properly"
template:
src: etc/issue.j2
dest: /etc/issue
owner: root
group: root
mode: 0644
when:
- rhel9cis_rule_1_8_1_2
tags:
- level1-server
- level1-workstation
- patch
- rule_1.8.1.2
- name: "1.8.1.3 | L1 | PATCH | Ensure remote login warning banner is configured properly"
template:
src: etc/issue.net.j2
dest: /etc/issue.net
owner: root
group: root
mode: 0644
when:
- rhel9cis_rule_1_8_1_3
tags:
- level1-server
- level1-workstation
- banner
- patch
- rule_1.8.1.3
- name: "1.8.1.4 | L1 | PATCH | Ensure permissions on /etc/motd are configured"
file:
dest: /etc/motd
state: file
owner: root
group: root
mode: 0644
when:
- rhel9cis_rule_1_8_1_4
tags:
- level1-server
- level1-workstation
- perms
- patch
- rule_1.8.1.4
- name: "1.8.1.5 | L1 | PATCH | Ensure permissions on /etc/issue are configured"
file:
dest: /etc/issue
state: file
owner: root
group: root
mode: 0644
when:
- rhel9cis_rule_1_8_1_5
tags:
- level1-server
- level1-workstation
- perms
- patch
- rule_1.8.1.5
- name: "1.8.1.6 | L1 | PATCH | Ensure permissions on /etc/issue.net are configured"
file:
dest: /etc/issue.net
state: file
owner: root
group: root
mode: 0644
when:
- rhel9cis_rule_1_8_1_6
tags:
- level1-server
- level1-workstation
- perms
- patch
- rule_1.8.1.6

View file

@ -0,0 +1,27 @@
---
- name: "1.8.2 | L1 | PATCH | Ensure GDM login banner is configured"
lineinfile:
dest: "{{ item.file }}"
regexp: "{{ item.regexp }}"
line: "{{ item.line }}"
state: present
create: yes
owner: root
group: root
mode: 0644
with_items:
- { file: '/etc/dconf/profile/gdm', regexp: 'user-db', line: 'user-db:user' }
- { file: '/etc/dconf/profile/gdm', regexp: 'system-db', line: 'system-db:gdm' }
- { file: '/etc/dconf/profile/gdm', regexp: 'file-db', line: 'file-db:/usr/share/gdm/greeter-dconf-defaults' }
- { file: '/etc/dconf/db/gdm.d/01-banner-message', regexp: '\[org\/gnome\/login-screen\]', line: '[org/gnome/login-screen]' }
- { file: '/etc/dconf/db/gdm.d/01-banner-message', regexp: 'banner-message-enable', line: 'banner-message-enable=true' }
- { file: '/etc/dconf/db/gdm.d/01-banner-message', regexp: 'banner-message-text', line: "banner-message-text='{{ rhel9cis_warning_banner }}' " }
when:
- rhel9cis_gui
- rhel9cis_rule_1_8_2
tags:
- level1-server
- level1-workstation
- patch
- rule_1.8.2

View file

@ -0,0 +1,15 @@
---
- name: "1.9 | L1 | PATCH | Ensure updates, patches, and additional security software are installed"
package:
name: "*"
state: latest
when:
- rhel9cis_rule_1_9
- not system_is_ec2
tags:
- level1-server
- level1-workstation
- patch
- rule_1.9
- skip_ansible_lint

42
tasks/section_1/main.yml Normal file
View file

@ -0,0 +1,42 @@
---
- name: "SECTION | 1.1 | FileSystem Configurations\n
SECTION | 1.1.1.x | Disable unused filesystems"
include: cis_1.1.1.x.yml
- include: cis_1.1.x.yml
- name: "SECTION | 1.2 | Configure Software Updates"
include: cis_1.2.x.yml
- name: "SECTION | 1.3 | Configure sudo"
include: cis_1.3.x.yml
- name: "SECTION | 1.4 | Filesystem Integrity"
include: cis_1.4.x.yml
when: rhel9cis_config_aide
- name: "SECTION | 1.5 | Secure Boot Settings"
include: cis_1.5.x.yml
- name: "SECTION | 1.6 | Additional Process Hardening"
include: cis_1.6.x.yml
- name: "SECTION | 1.7 | bootloader and Mandatory Access Control"
include: cis_1.7.1.x.yml
when: not rhel9cis_selinux_disable
- name: "SECTION | 1.8 | Warning Banners"
include: cis_1.8.1.x.yml
- name: "SECTION | 1.9 | Updated and Patches"
include: cis_1.9.yml
- name: "SECTION | 1.10 | Crypto policies"
include: cis_1.10.yml
when:
- not system_is_ec2
- name: "SECTION | 1.11 | FIPS/FUTURE Crypto policies"
include: cis_1.11.yml
when:
- not system_is_ec2

View file

@ -0,0 +1,14 @@
---
- name: "2.1.1 | L1 | PATCH | Ensure xinetd is not installed"
package:
name: xinetd
state: absent
when:
- rhel9cis_rule_2_1_1
tags:
- level1-server
- level1-workstation
- scored
- patch
- rule_2.1.1

View file

@ -0,0 +1,42 @@
---
- name: "2.2.1.1 | L1 | PATCH | Ensure time synchronization is in use - service install"
package:
name: "{{ rhel9cis_time_synchronization }}"
state: present
when:
- rhel9cis_rule_2_2_1_1
- not rhel9cis_system_is_container
tags:
- level1-server
- level1-workstation
- patch
- rule_2.2.1.1
- name: "2.2.1.2 | L1 | PATCH | Ensure chrony is configured"
block:
- name: "2.2.1.2 | L1 | PATCH | Ensure chrony is configured | Set configuration"
template:
src: chrony.conf.j2
dest: /etc/chrony.conf
owner: root
group: root
mode: 0644
- name: "2.2.1.2 | L1 | PATCH | Ensure chrony is configured | modify /etc/sysconfig/chronyd | 1"
lineinfile:
dest: /etc/sysconfig/chronyd
regexp: "^(#)?OPTIONS"
line: "OPTIONS=\"-u chrony\""
state: present
create: yes
mode: 0644
when:
- rhel9cis_time_synchronization == "chrony"
- rhel9cis_rule_2_2_1_2
- not rhel9cis_system_is_container
tags:
- level1-server
- level1-workstation
- patch
- rule_2.2.1.2

View file

@ -0,0 +1,288 @@
---
- name: "2.2.2 | L1 | PATCH | Ensure X Window System is not installed"
block:
- name: "2.2.2 | L1 | AUDIT | Ensure X Window System is not installed | capture xorg-x11 packages"
shell: rpm -qa | grep xorg-x11
args:
warn: no
failed_when: xorg_x11_installed.rc >=2
check_mode: no
changed_when: false
register: xorg_x11_installed
- name: "2.2.2 | L1 | PATCH | Ensure X Window System is not installed | remove packages if found"
shell: "dnf remove {{ item }}"
args:
warn: no
with_items:
- xorg_x11_installed.stdout_lines
when: xorg_x11_installed.stdout | length > 0
when:
- not rhel9cis_xwindows_required
- rhel9cis_rule_2_2_2
tags:
- level1-server
- scored
- xwindows
- patch
- rule_2.2.2
- name: "2.2.3 | L1 | PATCH | Ensure rsync service is not enabled "
service:
name: rsyncd
state: stopped
enabled: no
when:
- not rhel9cis_rsyncd_server
- "'rsyncd' in ansible_facts.packages"
- rhel9cis_rule_2_2_3
tags:
- level1-server
- level1-workstation
- patch
- rule_2.2.3
- name: "2.2.4 | L1 | PATCH | Ensure Avahi Server is not enabled"
service:
name: avahi-daemon
state: stopped
enabled: no
when:
- not rhel9cis_avahi_server
- "'avahi' in ansible_facts.packages"
- rhel9cis_rule_2_2_4
tags:
- level1-server
- level1-workstation
- scored
- avahi
- services
- patch
- rule_2.2.4
- name: "2.2.5 | L1 | PATCH | Ensure SNMP Server is not enabled"
service:
name: snmpd
state: stopped
enabled: no
when:
- not rhel9cis_snmp_server
- "'net-snmp' in ansible_facts.packages"
- rhel9cis_rule_2_2_5
tags:
- level1-server
- level1-workstation
- patch
- rule_2.2.5
- name: "2.2.6 | L1 | PATCH | Ensure HTTP Proxy Server is not enabled"
service:
name: squid
state: stopped
enabled: no
when:
- not rhel9cis_squid_server
- "'squid' in ansible_facts.packages"
- rhel9cis_rule_2_2_6
tags:
- level1-server
- level1-workstation
- patch
- rule_2.2.6
- name: "2.2.7 | L1 | PATCH | Ensure Samba is not enabled"
service:
name: smb
state: stopped
enabled: no
when:
- not rhel9cis_smb_server
- "'samba' in ansible_facts.packages"
- rhel9cis_rule_2_2_7
tags:
- level1-server
- level1-workstation
- patch
- rule_2.2.7
- name: "2.2.8 | L1 | PATCH | Ensure IMAP and POP3 server is not enabled"
service:
name: dovecot
state: stopped
enabled: no
when:
- not rhel9cis_dovecot_server
- "'dovecot' in ansible_facts.packages"
- rhel9cis_rule_2_2_8
tags:
- level1-server
- level1-workstation
- patch
- rule_2.2.8
- name: "2.2.9 | L1 | PATCH | Ensure HTTP server is not enabled"
service:
name: httpd
state: stopped
enabled: no
when:
- not rhel9cis_httpd_server
- "'httpd' in ansible_facts.packages"
- rhel9cis_rule_2_2_9
tags:
- level1-server
- level1-workstation
- patch
- rule_2.2.9
- name: "2.2.10 | L1 | PATCH | Ensure FTP Server is not enabled"
service:
name: vsftpd
state: stopped
enabled: no
when:
- not rhel9cis_vsftpd_server
- "'vsftpd' in ansible_facts.packages"
- rhel9cis_rule_2_2_10
tags:
- level1-server
- level1-workstation
- patch
- rule_2.2.10
- name: "2.2.11 | L1 | PATCH | Ensure DNS Server is not enabled"
service:
name: named
state: stopped
enabled: no
when:
- not rhel9cis_named_server
- "'bind' in ansible_facts.packages"
- rhel9cis_rule_2_2_11
tags:
- level1-server
- level1-workstation
- patch
- rule_2.2.11
- name: "2.2.12 | L1 | PATCH | Ensure NFS is not enabled"
service:
name: nfs-server
state: stopped
enabled: no
when:
- not rhel9cis_nfs_rpc_server
- "'nfs-utils' in ansible_facts.packages"
- rhel9cis_rule_2_2_12
tags:
- level1-server
- level1-workstation
- scored
- nfs
- services
- patch
- rule_2.2.12
- name: "2.2.13 | L1 | PATCH | Ensure RPC is not enabled"
service:
name: rpcbind
state: stopped
enabled: no
when:
- not rhel9cis_nfs_rpc_server
- "'rpcbind' in ansible_facts.packages"
- rhel9cis_rule_2_2_13
tags:
- level1-server
- level1-workstation
- scored
- rpc
- services
- patch
- rule_2.2.7
- name: "2.2.14 | L1 | PATCH | Ensure LDAP server is not enabled"
service:
name: slapd
state: stopped
enabled: no
when:
- not rhel9cis_ldap_server
- "'openldap-servers' in ansible_facts.packages"
- rhel9cis_rule_2_2_14
tags:
- level1-server
- level1-workstation
- scored
- ldap
- services
- patch
- rule_2.2.6
- name: "2.2.15 | L1 | PATCH | Ensure DHCP Server is not enabled"
service:
name: dhcpd
state: stopped
enabled: no
when:
- not rhel9cis_dhcp_server
- "'dhcp' in ansible_facts.packages"
- rhel9cis_rule_2_2_15
tags:
- level1-server
- level1-workstation
- scored
- dhcp
- services
- patch
- rule_2.2.15
- name: "2.2.16 | L1 | PATCH | Ensure CUPS is not enabled"
service:
name: cups
state: stopped
enabled: no
when:
- not rhel9cis_cups_server
- "'cups' in ansible_facts.packages"
- rhel9cis_rule_2_2_16
tags:
- level1-server
- level2-workstation
- scored
- cups
- services
- patch
- rule_2.2.16
- name: "2.2.17 | L1 | PATCH | Ensure NIS Server is not enabled"
service:
name: ypserv
state: stopped
enabled: no
when:
- not rhel9cis_nis_server
- "'ypserv' in ansible_facts.packages"
- rhel9cis_rule_2_2_17
tags:
- level1-server
- level1-workstation
- patch
- rule_2.2.17
- name: "2.2.18 | L1 | PATCH | Ensure mail transfer agent is configured for local-only mode"
lineinfile:
dest: /etc/postfix/main.cf
regexp: "^(#)?inet_interfaces"
line: "inet_interfaces = loopback-only"
notify: restart postfix
when:
- not rhel9cis_is_mail_server
- "'postfix' in ansible_facts.packages"
- rhel9cis_rule_2_2_18
tags:
- level1-server
- level1-workstation
- patch
- rule_2.2.1

View file

@ -0,0 +1,43 @@
---
- name: "2.3.1 | L1 | PATCH | Ensure NIS Client is not installed"
package:
name: ypbind
state: absent
when:
- not rhel9cis_ypbind_required
- "'ypbind' in ansible_facts.packages"
- rhel9cis_rule_2_3_1
tags:
- level1-server
- level1-workstation
- patch
- rule_2.3.1
- name: "2.3.2 | L1 | PATCH | Ensure telnet client is not installed"
package:
name: telnet
state: absent
when:
- not rhel9cis_telnet_required
- "'telnet' in ansible_facts.packages"
- rhel9cis_rule_2_3_2
tags:
- level1-server
- level1-workstation
- patch
- rule_2.3.2
- name: "2.3.3 | L1 | PATCH | Ensure LDAP client is not installed"
package:
name: openldap-clients
state: absent
when:
- not rhel9cis_openldap_clients_required
- "'openldap-clients' in ansible_facts.packages"
- rhel9cis_rule_2_3_3
tags:
- level1-server
- level1-workstation
- patch
- rule_2.3.3

13
tasks/section_2/main.yml Normal file
View file

@ -0,0 +1,13 @@
---
- name: "SECTION | 2.1 | xinetd"
include: cis_2.1.1.yml
- name: "SECTION | 2.2.1 | Time Synchronization"
include: cis_2.2.1.x.yml
- name: "SECTION | 2.2 | Special Purpose Services"
include: cis_2.2.x.yml
- name: "SECTION | 2.3 | Service Clients"
include: cis_2.3.x.yml

View file

@ -0,0 +1,43 @@
---
- name: "3.1.1 | L1 | PATCH | Ensure IP forwarding is disabled"
block:
- name: "3.1.1 | L1 | PATCH | Ensure IP forwarding is disabled"
debug:
msg: "Control being set via Handler 'update sysctl' which writes to /etc/sysctl.d/99-sysctl.conf"
notify:
- update sysctl
- sysctl flush ipv4 route table
- name: "3.1.1 | L1 | PATCH | Ensure IP forwarding is disabled"
debug:
msg: "Control being set via Handler 'update sysctl' which writes to /etc/sysctl.d/99-sysctl.conf"
notify:
- sysctl flush ipv6 route table
- update sysctl
when: rhel9cis_ipv6_required
when:
- not rhel9cis_is_router
- rhel9cis_rule_3_1_1
tags:
- level1-server
- level1-workstation
- sysctl
- patch
- rule_3.1.1
- name: "3.1.2 | L1 | PATCH | Ensure packet redirect sending is disabled"
debug:
msg: "Control being set via Handler 'update sysctl' which writes to /etc/sysctl.d/99-sysctl.conf"
notify:
- update sysctl
- sysctl flush ipv4 route table
when:
- not rhel9cis_is_router
- rhel9cis_rule_3_1_2
tags:
- level1-server
- level1-workstation
- sysctl
- patch
- rule_3.1.2

View file

@ -0,0 +1,155 @@
---
- name: "3.2.1 | L1 | PATCH | Ensure source routed packets are not accepted"
block:
- name: "3.2.1 | L1 | PATCH | Ensure source routed packets are not accepted"
debug:
msg: "Control being set via Handler 'update sysctl' which writes to /etc/sysctl.d/99-sysctl.conf"
notify:
- update sysctl
- sysctl flush ipv4 route table
- name: "3.2.1 | L1 | PATCH | Ensure source routed packets are not accepted"
debug:
msg: "Control being set via Handler 'update sysctl' which writes to /etc/sysctl.d/99-sysctl.conf"
notify:
- sysctl flush ipv6 route table
- update sysctl
when: rhel9cis_ipv6_required
when:
- rhel9cis_rule_3_2_1
tags:
- level1-server
- level1-workstation
- sysctl
- patch
- rule_3.2.1
- name: "3.2.2 | L1 | PATCH | Ensure ICMP redirects are not accepted"
block:
- name: "3.2.2 | L1 | PATCH | Ensure ICMP redirects are not accepted"
debug:
msg: "Control being set via Handler 'update sysctl' which writes to /etc/sysctl.d/99-sysctl.conf"
notify:
- update sysctl
- sysctl flush ipv4 route table
- name: "3.2.2 | L1 | PATCH | Ensure ICMP redirects are not accepted"
debug:
msg: "Control being set via Handler 'update sysctl' which writes to /etc/sysctl.d/99-sysctl.conf"
notify:
- sysctl flush ipv6 route table
- update sysctl
when: rhel9cis_ipv6_required
when:
- rhel9cis_rule_3_2_2
tags:
- level1-server
- level1-workstation
- sysctl
- patch
- rule_3.2.2
- name: "3.2.3 | L1 | PATCH | Ensure secure ICMP redirects are not accepted"
debug:
msg: "Control being set via Handler 'update sysctl' which writes to /etc/sysctl.d/99-sysctl.conf"
notify: update sysctl
when:
- rhel9cis_rule_3_2_3
tags:
- level1-server
- level1-workstation
- sysctl
- patch
- rule_3.2.3
- name: "3.2.4 | L1 | PATCH | Ensure suspicious packets are logged"
debug:
msg: "Control being set via Handler 'update sysctl' which writes to /etc/sysctl.d/99-sysctl.conf"
notify: update sysctl
when:
- rhel9cis_rule_3_2_4
tags:
- level1-server
- level1-workstation
- sysctl
- patch
- rule_3.2.4
- name: "3.2.5 | L1 | PATCH | Ensure broadcast ICMP requests are ignored"
debug:
msg: "Control being set via Handler 'update sysctl' which writes to /etc/sysctl.d/99-sysctl.conf"
notify: update sysctl
when:
- rhel9cis_rule_3_2_5
tags:
- level1-server
- level1-workstation
- sysctl
- patch
- rule_3.2.5
- name: "3.2.6 | L1 | PATCH | Ensure bogus ICMP responses are ignored"
debug:
msg: "Control being set via Handler 'update sysctl' which writes to /etc/sysctl.d/99-sysctl.conf"
notify: update sysctl
when:
- rhel9cis_rule_3_2_6
tags:
- level1-server
- level1-workstation
- sysctl
- patch
- rule_3.2.6
- name: "3.2.7 | L1 | PATCH | Ensure Reverse Path Filtering is enabled"
debug:
msg: "Control being set via Handler 'update sysctl' which writes to /etc/sysctl.d/99-sysctl.conf"
notify: update sysctl
when:
- rhel9cis_rule_3_2_7
tags:
- level1-server
- level1-workstation
- sysctl
- patch
- rule_3.2.7
- name: "3.2.8 | L1 | PATCH | Ensure TCP SYN Cookies is enabled"
debug:
msg: "Control being set via Handler 'update sysctl' which writes to /etc/sysctl.d/99-sysctl.conf"
notify: update sysctl
when:
- rhel9cis_rule_3_2_8
tags:
- level1-server
- level1-workstation
- sysctl
- patch
- rule_3.2.8
- name: "3.2.9 | L2 | PATCH | Ensure IPv6 router advertisements are not accepted"
block:
- name: "3.2.9 | L2 | PATCH | Ensure IPv6 router advertisements are not accepted"
debug:
msg: "Control being set via Handler 'update sysctl' which writes to /etc/sysctl.d/99-sysctl.conf"
notify:
- update sysctl
- sysctl flush ipv4 route table
- name: "3.2.9 | L2 | PATCH | Ensure IPv6 router advertisements are not accepted"
debug:
msg: "Control being set via Handler 'update sysctl' which writes to /etc/sysctl.d/99-sysctl.conf"
notify:
- sysctl flush ipv6 route table
- update sysctl
when: rhel9cis_ipv6_required
when:
- rhel9cis_ipv6_required
- rhel9cis_rule_3_2_9
tags:
- level2-server
- level2-workstation
- sysctl
- patch
- rule_3.2.9

View file

@ -0,0 +1,61 @@
---
- name: "3.3.1 | L2 | PATCH | Ensure DCCP is disabled"
lineinfile:
dest: /etc/modprobe.d/CIS.conf
regexp: "^(#)?install dccp(\\s|$)"
line: "install dccp /bin/true"
create: yes
mode: 0600
when:
- rhel9cis_rule_3_3_1
tags:
- level2-server
- level2-workstation
- patch
- rule_3.3.1
- name: "3.3.2 | L2 | PATCH | Ensure SCTP is disabled"
lineinfile:
dest: /etc/modprobe.d/CIS.conf
regexp: "^(#)?install sctp(\\s|$)"
line: "install sctp /bin/true"
create: yes
mode: 0600
when:
- rhel9cis_rule_3_3_2
tags:
- level2-server
- level2-workstation
- patch
- rule_3.3.2
- name: "3.3.3 | L2 | PATCH | Ensure RDS is disabled"
lineinfile:
dest: /etc/modprobe.d/CIS.conf
regexp: "^(#)?install rds(\\s|$)"
line: "install rds /bin/true"
create: yes
mode: 0600
when:
- rhel9cis_rule_3_3_3
tags:
- level2-server
- level2-workstation
- patch
- rule_3.3.3
- name: "3.3.4 | L2 | PATCH | Ensure TIPC is disabled"
lineinfile:
dest: /etc/modprobe.d/CIS.conf
regexp: "^(#)?install tipc(\\s|$)"
line: "install tipc /bin/true"
create: yes
mode: 0600
when:
- rhel9cis_rule_3_3_4
tags:
- level2-server
- level2-workstation
- patch
- rule_3.3.4

View file

@ -0,0 +1,13 @@
---
- name: "3.4.1.1 | L1 | PATCH | Ensure a Firewall package is installed"
package:
name: "{{ rhel9cis_firewall }}"
state: present
when:
- rhel9cis_rule_3_4_1_1
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.1.1

View file

@ -0,0 +1,102 @@
---
- name: "3.4.2.1 | L1 | PATCH | Ensure firewalld service is enabled and running"
service:
name: firewalld
state: started
enabled: yes
when:
- rhel9cis_firewall == "firewalld"
- rhel9cis_rule_3_4_2_1
tags:
- level1-server
- level1-workstation
- patch
- rule_3_4_2_1
- name: "3.4.2.2 | L1 | PATCH | Ensure iptables is not enabled with firewalld"
systemd:
name: iptables
enabled: false
masked: true
ignore_errors: true
when:
- rhel9cis_firewall == "firewalld"
- rhel9cis_rule_3_4_2_2
tags:
- skip_ansible_lint
- level1-server
- level1-workstation
- patch
- rule_3_4_2_2
- name: "3.4.2.3 | L1 | PATCH | Ensure nftables is not enabled with firewalld"
systemd:
name: nftables
enabled: false
masked: true
when:
- rhel9cis_firewall == "firewalld"
- rhel9cis_rule_3_4_2_3
tags:
- level1-server
- level1-workstation
- patch
- rule_3_4_2_3
- name: "3.4.2.4 | L1 | PATCH | Ensure default zone is set"
command: firewall-cmd --set-default-zone="{{ rhel9cis_default_zone }}"
when:
- rhel9cis_firewall == "firewalld"
- rhel9cis_rule_3_4_2_4
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.2.4
- name: "3.4.2.5 | L1 | AUDIT | Ensure network interfaces are assigned to appropriate zone"
block:
- name: "3.4.2.5 | L1 | AUDIT | Ensure network interfaces are assigned to appropriate zone | Get list of interfaces and polocies"
shell: "nmcli -t connection show | awk -F: '{ if($4){print $4} }' | while read INT; do firewall-cmd --get-active-zones | grep -B1 $INT; done"
changed_when: false
failed_when: false
check_mode: no
register: rhel9cis_3_4_2_5_interfacepolicy
- name: "3.4.2.5 | L1 | AUDIT | Ensure network interfaces are assigned to appropriate zone | Get list of interfaces and polocies | Show the interface to policy"
debug:
msg:
- "The items below are the policies tied to the interfaces, please correct as needed"
- "{{ rhel9cis_3_4_2_5_interfacepolicy.stdout_lines }}"
when:
- rhel9cis_firewall == "firewalld"
- rhel9cis_rule_3_4_2_5
tags:
- level1-server
- level1-workstation
- audit
- rule_3.4.2.5
- name: "3.4.2.6 | L1 | AUDIT | Ensure firewalld drops unnecessary services and ports"
block:
- name: "3.4.2.6 | L1 | AUDIT | Ensure firewalld drops unnecessary services and ports | Get list of services and ports"
shell: "firewall-cmd --get-active-zones | awk '!/:/ {print $1}' | while read ZN; do firewall-cmd --list-all --zone=$ZN; done"
changed_when: false
failed_when: false
check_mode: no
register: rhel9cis_3_4_2_6_servicesport
- name: "3.4.2.6 | L1 | AUDIT | Ensure firewalld drops unnecessary services and ports | Show services and ports"
debug:
msg:
- "The items below are the services and ports that are accepted, please correct as needed"
- "{{ rhel9cis_3_4_2_6_servicesport.stdout_lines }}"
when:
- rhel9cis_firewall == "firewalld"
- rhel9cis_rule_3_4_2_6
tags:
- level1-server
- level1-workstation
- audit
- rule_3.4.2.6

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---
- name: "3.4.3.1 | L1 | PATCH | Ensure iptables are flushed with nftables"
command: ip6tables -F
when:
- rhel9cis_rule_3_4_3_1
- rhel9cis_firewall != "iptables"
- rhel9cis_ipv6_required
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.3.1
- name: "3.4.3.2 | L1 | AUDIT | Ensure an nftables table exists"
block:
- name: "3.4.3.2 | L1 | AUDIT | Ensure a table exists | Check for tables"
command: nft list tables
changed_when: false
failed_when: false
register: rhel9cis_3_4_3_2_nft_tables
- name: "3.4.3.2 | L1 | AUDIT | Ensure an nftables table exists | Show existing tables"
debug:
msg:
- "Below are the current nft tables, please review"
- "{{ rhel9cis_3_4_3_2_nft_tables.stdout_lines }}"
when: rhel9cis_3_4_3_2_nft_tables.stdout | length > 0
- name: "3.4.3.2 | L1 | AUDIT | Ensure an nftables table exists | Alert on no tables"
debug:
msg:
- "Warning! You currently have no nft tables, please review your setup"
- 'Use the command "nft create table inet <table name>" to create a new table'
when:
- rhel9cis_3_4_3_2_nft_tables.stdout | length == 0
- not rhel9cis_nft_tables_autonewtable
- name: "3.4.3.2 | L1 | PATCH | Ensure a table exists | Create table if needed"
command: nft create table inet "{{ rhel9cis_nft_tables_tablename }}"
failed_when: no
when: rhel9cis_nft_tables_autonewtable
when:
- rhel9cis_firewall == "nftables"
- rhel9cis_rule_3_4_3_2
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.3.2
- name: "3.4.3.3 | L1 | PATCH | Ensure nftables base chains exist"
block:
- name: "3.4.3.3 | L1 | Ensure nftables base chains exist | Get current chains for INPUT"
shell: nft list ruleset | grep 'hook input'
changed_when: false
failed_when: false
register: rhel9cis_3_4_3_3_input_chains
- name: "3.4.3.3 | L1 | AUDIT | Ensure nftables base chains exist | Get current chains for FORWARD"
shell: nft list ruleset | grep 'hook forward'
changed_when: false
failed_when: false
register: rhel9cis_3_4_3_3_forward_chains
- name: "3.4.3.3 | L1 | AUDIT | Ensure nftables base chains exist | Get current chains for OUTPUT"
shell: nft list ruleset | grep 'hook output'
changed_when: false
failed_when: false
register: rhel9cis_3_4_3_3_output_chains
- name: "3.4.3.3 | L1 | AUDIT | Ensure nftables base chains exist | Display chains for review"
debug:
msg:
- "Below are the current INPUT chains"
- "{{ rhel9cis_3_4_3_3_input_chains.stdout_lines }}"
- "Below are the current FORWARD chains"
- "{{ rhel9cis_3_4_3_3_forward_chains.stdout_lines }}"
- "Below are teh current OUTPUT chains"
- "{{ rhel9cis_3_4_3_3_output_chains.stdout_lines }}"
when: not rhel9cis_nft_tables_autochaincreate
- name: "3.4.3.3 | L1 | PATCH | Ensure nftables base chains exist | Create chains if needed"
shell: "{{ item }}"
args:
warn: no
failed_when: no
with_items:
- nft create chain inet "{{ rhel9cis_nft_tables_tablename }}" input { type filter hook input priority 0 \; }
- nft create chain inet "{{ rhel9cis_nft_tables_tablename }}" forward { type filter hook forward priority 0 \; }
- nft create chain inet "{{ rhel9cis_nft_tables_tablename }}" output { type filter hook output priority 0 \; }
when: rhel9cis_nft_tables_autochaincreate
when:
- rhel9cis_firewall == "nftables"
- rhel9cis_rule_3_4_3_3
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.3.3
- name: "3.4.3.4 | L1 | PATCH | Ensure nftables loopback traffic is configured"
block:
- name: "3.4.3.4 | L1 | AUDIT | Ensure nftables loopback traffic is configured | Gather iif lo accept existence"
shell: nft list ruleset | awk '/hook input/,/}/' | grep 'iif "lo" accept'
changed_when: false
failed_when: false
register: rhel9cis_3_4_3_4_iiflo
- name: "3.4.3.4 | L1 | AUDIT | Ensure nftables loopback traffic is configured | Gather ip saddr existence"
shell: nft list ruleset | awk '/hook input/,/}/' | grep 'ip saddr'
changed_when: false
failed_when: false
register: rhel9cis_3_4_3_4_ipsaddr
- name: "3.4.3.4 | L1 | AUDIT | Ensure nftables loopback traffic is configured | Gather ip6 saddr existence"
shell: nft list ruleset | awk '/hook input/,/}/' | grep 'ip6 saddr'
changed_when: false
failed_when: false
register: rhel9cis_3_4_3_4_ip6saddr
- name: "3.4.3.4 | L1 | PATCH | Ensure nftables loopback traffic is configured | Set iif lo accept rule"
command: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" input iif lo accept
when: '"iif \"lo\" accept" not in rhel9cis_3_4_3_4_iiflo.stdout'
- name: "3.4.3.4 | L1 | PATCH | Ensure nftables loopback traffic is configured | Set ip sddr rule"
command: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" input ip saddr 127.0.0.0/8 counter drop
when: '"ip saddr 127.0.0.0/8 counter packets 0 bytes 0 drop" not in rhel9cis_3_4_3_4_ipsaddr.stdout'
- name: "3.4.3.4 | L1 | PATCH | Ensure nftables loopback traffic is configured | Set ip6 saddr rule"
command: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" input ip6 saddr ::1 counter drop
when: '"ip6 saddr ::1 counter packets 0 bytes 0 drop" not in rhel9cis_3_4_3_4_ip6saddr.stdout'
when:
- rhel9cis_firewall == "nftables"
- rhel9cis_rule_3_4_3_4
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.3.4
- name: "3.4.3.5 | L1 | PATCH | Ensure nftables outbound and established connections are configured"
block:
- name: "3.4.3.5 | L1 | AUDIT | Ensure nftables outbound and established connections are configured | Gather incoming connection rules"
shell: nft list ruleset | awk '/hook input/,/}/' | grep -E 'ip protocol (tcp|udp|icmp) ct state'
changed_when: false
failed_when: false
register: rhel9cis_3_4_3_5_inconnectionrule
- name: "3.4.3.5 | L1 | AUDIT | Ensure nftables outbound and established connections are configured | Gather outbound connection rules"
shell: nft list ruleset | awk '/hook output/,/}/' | grep -E 'ip protocol (tcp|udp|icmp) ct state'
changed_when: false
failed_when: false
register: rhel9cis_3_4_3_5_outconnectionrule
- name: "3.4.3.5 | L1 | PATCH | Ensure nftables outbound and established connections are configured | Add input tcp established accept policy"
command: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" input ip protocol tcp ct state established accept
when: '"ip protocol tcp ct state established accept" not in rhel9cis_3_4_3_5_inconnectionrule.stdout'
- name: "3.4.3.5 | L1 | PATCH | Ensure nftables outbound and established connections are configured | Add input udp established accept policy"
command: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" input ip protocol udp ct state established accept
when: '"ip protocol udp ct state established accept" not in rhel9cis_3_4_3_5_inconnectionrule.stdout'
- name: "3.4.3.5 | L1 | PATCH | Ensure nftables outbound and established connections are configured | Add input icmp established accept policy"
command: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" input ip protocol icmp ct state established accept
when: '"ip protocol icmp ct state established accept" not in rhel9cis_3_4_3_5_inconnectionrule.stdout'
- name: "3.4.3.5 | L1 | PATCH | Ensure nftables outbound and established connections are configured | Add output tcp new, related, established accept policy"
command: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" output ip protocol tcp ct state new,related,established accept
when: '"ip protocol tcp ct state established,related,new accept" not in rhel9cis_3_4_3_5_outconnectionrule.stdout'
- name: "3.4.3.5 | L1 | PATCH | Ensure nftables outbound and established connections are configured | Add output udp new, related, established accept policy"
command: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" output ip protocol udp ct state new,related,established accept
when: '"ip protocol udp ct state established,related,new accept" not in rhel9cis_3_4_3_5_outconnectionrule.stdout'
- name: "3.4.3.5 | L1 | PATCH | Ensure nftables outbound and established connections are configured | Add output icmp new, related, established accept policy"
command: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" output ip protocol icmp ct state new,related,established accept
when: '"ip protocol icmp ct state established,related,new accept" not in rhel9cis_3_4_3_5_outconnectionrule.stdout'
when:
- rhel9cis_firewall == "nftables"
- rhel9cis_rule_3_4_3_5
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.3.5
- name: "3.4.3.6 | L1 | PATCH | Ensure nftables default deny firewall policy"
block:
- name: "3.4.3.6 | L1 | AUDIT | Ensure nftables default deny firewall policy | Check for hook input deny policy"
shell: nft list table inet "{{ rhel9cis_nft_tables_tablename }}" | grep 'hook input'
failed_when: false
changed_when: false
register: rhel9cis_3_4_3_6_inputpolicy
- name: "3.4.3.6 | L1 | AUDIT | Ensure nftables default deny firewall policy | Check for hook forward deny policy"
shell: nft list table inet "{{ rhel9cis_nft_tables_tablename }}" | grep 'hook forward'
failed_when: false
changed_when: false
register: rhel9cis_3_4_3_6_forwardpolicy
- name: "3.4.3.6 | L1 | AUDIT | Ensure nftables default deny firewall policy | Check for hook output deny policy"
shell: nft list table inet "{{ rhel9cis_nft_tables_tablename }}" | grep 'hook output'
failed_when: false
changed_when: false
register: rhel9cis_3_4_3_6_outputpolicy
- name: "3.4.3.6 | L1 | AUDIT | Ensure nftables default deny firewall policy | Check for SSH allow"
shell: nft list table inet "{{ rhel9cis_nft_tables_tablename }}" | grep 'ssh'
failed_when: false
changed_when: false
register: rhel9cis_3_4_3_6_sshallowcheck
- name: "3.4.3.6 | L1 | PATCH | Ensure nftables default deny firewall policy | Enable SSH traffic"
command: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" input tcp dport ssh accept
when: '"tcp dport ssh accept" not in rhel9cis_3_4_3_6_sshallowcheck.stdout'
- name: "3.4.3.6 | L1 | PATCH | Ensure nftables default deny firewall policy | Set hook input deny policy"
command: nft chain inet "{{ rhel9cis_nft_tables_tablename }}" input { policy drop \; }
when: '"type filter hook input priority 0; policy drop;" not in rhel9cis_3_4_3_6_inputpolicy.stdout'
- name: "3.4.3.6 | L1 | PATCH | Ensure nftables default deny firewall policy | Create hook forward deny policy"
command: nft chain inet "{{ rhel9cis_nft_tables_tablename }}" forward { policy drop \; }
when: '"type filter hook forward priority 0; policy drop;" not in rhel9cis_3_4_3_6_forwardpolicy.stdout'
- name: "3.4.3.6 | L1 | PATCH | Ensure nftables default deny firewall policy | Create hook output deny policy"
command: nft chain inet "{{ rhel9cis_nft_tables_tablename }}" output { policy drop \; }
when: '"type filter hook output priority 0; policy drop;" not in rhel9cis_3_4_3_6_outputpolicy.stdout'
when:
- rhel9cis_firewall == "nftables"
- rhel9cis_rule_3_4_3_6
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.3.6
- name: "3.4.3.7 | L1 | PATCH | Ensure nftables service is enabled | Check if nftables is enabled"
service:
name: nftables
enabled: yes
when:
- rhel9cis_firewall == "nftables"
- rhel9cis_rule_3_4_3_7
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.3.7
- name: "3.4.3.8 | L1 | PATCH | Ensure nftables rules are permanent"
lineinfile:
path: /etc/sysconfig/nftables.conf
state: present
insertafter: EOF
line: include "/etc/nftables/inet-{{ rhel9cis_nft_tables_tablename }}"
when:
- rhel9cis_firewall == "nftables"
- rhel9cis_rule_3_4_3_8
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.3.8

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@ -0,0 +1,144 @@
---
- name: "3.4.4.1.1 | L1 | PATCH | Ensure iptables default deny firewall policy"
block:
- name: "3.4.4.1.1 | L1 | PATCH | Ensure iptables default deny firewall policy | Configure ssh to be allowed"
iptables:
chain: INPUT
protocol: tcp
destination_port: "22"
jump: ACCEPT
- name: "3.4.4.1.1 | L1 | PATCH | Ensure iptables default deny firewall policy | Set drop items"
iptables:
policy: DROP
chain: "{{ item }}"
with_items:
- INPUT
- FORWARD
- OUTPUT
when:
- rhel9cis_rule_3_4_4_1_1
- rhel9cis_firewall == "iptables"
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.4.1.1
- name: "3.4.4.1.2 | L1 | PATCH | Ensure iptables loopback traffic is configured"
block:
- name: "3.4.4.1.2 | L1 | Ensure iptables loopback traffic is configured | INPUT Loopback ACCEPT"
iptables:
action: append
chain: INPUT
in_interface: lo
jump: ACCEPT
- name: "3.4.4.1.2 | L1 | PATCH | Ensure iptables loopback traffic is configured | OUTPUT Loopback ACCEPT"
iptables:
action: append
chain: OUTPUT
out_interface: lo
jump: ACCEPT
- name: "3.4.4.1.2 | L1 | PATCH | Ensure iptables loopback traffic is configured | INPUT Loopback 127.0.0.0/8"
iptables:
action: append
chain: INPUT
source: 127.0.0.0/8
jump: DROP
when:
- rhel9cis_firewall == "iptables"
- rhel9cis_rule_3_4_4_1_2
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.4.1.2
- name: "3.4.4.1.3 | L1 | PATCH | Ensure iptables outbound and established connections are configured"
iptables:
action: append
chain: '{{ item.chain }}'
protocol: '{{ item.protocol }}'
match: state
ctstate: '{{ item.ctstate }}'
jump: ACCEPT
with_items:
- { chain: OUTPUT, protocol: tcp, ctstate: 'NEW,ESTABLISHED' }
- { chain: OUTPUT, protocol: udp, ctstate: 'NEW,ESTABLISHED' }
- { chain: OUTPUT, protocol: icmp, ctstate: 'NEW,ESTABLISHED' }
- { chain: INPUT, protocol: tcp, ctstate: ESTABLISHED }
- { chain: INPUT, protocol: udp, ctstate: ESTABLISHED }
- { chain: INPUT, protocol: icmp, ctstate: ESTABLISHED }
when:
- rhel9cis_firewall == "iptables"
- rhel9cis_rule_3_4_4_1_3
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.4.1.3
- name: "3.4.4.1.4 | L1 | PATCH | Ensure iptables firewall rules exist for all open ports"
block:
- name: "3.4.4.1.4 | L1 | AUDIT | Ensure iptables firewall rules exist for all open ports | Get list of TCP open ports"
shell: netstat -ant |grep "tcp.*LISTEN" | awk '{ print $4 }'| sed 's/.*://'
changed_when: false
failed_when: false
register: rhel9cis_3_4_4_1_4_otcp
- name: "3.4.4.1.4 | L1 | AUDIT | Ensure iptables firewall rules exist for all open ports | Get the list of udp open ports"
shell: netstat -ant |grep "udp.*LISTEN" | awk '{ print $4 }'| sed 's/.*://'
changed_when: false
failed_when: false
register: rhel9cis_3_4_4_1_4_oudp
- name: "3.4.4.1.4 | L1 | PATCH | Ensure iptables firewall rules exist for all open ports | Adjust open tcp ports"
iptables:
action: append
chain: INPUT
protocol: tcp
destination_port: "{{ item }}"
match: state
ctstate: NEW
jump: ACCEPT
with_items:
- "{{ rhel9cis_3_4_4_1_4_otcp.stdout_lines }}"
when: rhel9cis_3_4_4_1_4_otcp.stdout is defined
- name: "3.4.4.1.4 | L1 | PATCH | Ensure iptables firewall rules exist for all open ports | Adjust open udp ports"
iptables:
action: append
chain: INPUT
protocol: udp
destination_port: "{{ item }}"
match: state
ctstate: NEW
jump: ACCEPT
with_items:
- "{{ rhel9cis_3_4_4_1_4_oudp.stdout_lines }}"
when: rhel9cis_3_4_4_1_4_otcp.stdout is defined
when:
- rhel9cis_firewall == "iptables"
- rhel9cis_rule_3_4_4_1_4
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.4.1.4
- name: "3.4.4.1.5 | L1 | PATCH | Ensure iptables service is enabled and active | Check if iptables is enabled"
service:
name: iptables
enabled: yes
state: started
when:
- rhel9cis_firewall == "iptables"
- rhel9cis_rule_3_4_4_1_5
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.4.1.5

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@ -0,0 +1,136 @@
---
- name: "3.4.4.2.1 | L1 | PATCH | Ensure ip6tables default deny firewall policy"
block:
- name: "3.4.4.2.1 | L1 | Ensure ip6tables default deny firewall policy | Configure ssh to be allowed"
iptables:
chain: INPUT
protocol: tcp
destination_port: "22"
jump: ACCEPT
ip_version: ipv6
- name: "3.4.4.2.1 | L1 | PATCH | Ensure ip6tables default deny firewall policy | Set drop items"
iptables:
policy: DROP
chain: "{{ item }}"
ip_version: ipv6
with_items:
- INPUT
- FORWARD
- OUTPUT
when:
- rhel9cis_firewall == "iptables"
- rhel9cis_rule_3_4_4_2_1
- rhel9cis_ipv6_required
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.4.2.1
- name: "3.4.4.2.2 | L1 | PATCH | Ensure ip6tables loopback traffic is configured"
block:
- name: "3.4.4.2.2 | L1 | PATCH | Ensure ip6tables loopback traffic is configured | INPUT Loopback ACCEPT"
iptables:
action: append
chain: INPUT
in_interface: lo
jump: ACCEPT
ip_version: ipv6
- name: "3.4.4.2.2 | L1 | PATCH | Ensure ip6tables loopback traffic is configured | OUTPUT Loopback ACCEPT"
iptables:
action: append
chain: OUTPUT
out_interface: lo
jump: ACCEPT
ip_version: ipv6
- name: "3.4.4.2.2 | L1 | PATCH | Ensure ip6tables loopback traffic is configured | INPUT Loopback 127.0.0.0/8"
iptables:
action: append
chain: INPUT
source: ::1
jump: DROP
ip_version: ipv6
when:
- rhel9cis_firewall == "iptables"
- rhel9cis_rule_3_4_4_2_2
- rhel9cis_ipv6_required
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.4.2.2
- name: "3.4.4.2.3 | L1 | PATCH | Ensure ip6tables outbound and established connections are configured"
iptables:
action: append
chain: '{{ item.chain }}'
protocol: '{{ item.protocol }}'
match: state
ctstate: '{{ item.ctstate }}'
jump: ACCEPT
ip_version: ipv6
with_items:
- { chain: OUTPUT, protocol: tcp, ctstate: 'NEW,ESTABLISHED' }
- { chain: OUTPUT, protocol: udp, ctstate: 'NEW,ESTABLISHED' }
- { chain: OUTPUT, protocol: icmp, ctstate: 'NEW,ESTABLISHED' }
- { chain: INPUT, protocol: tcp, ctstate: ESTABLISHED }
- { chain: INPUT, protocol: udp, ctstate: ESTABLISHED }
- { chain: INPUT, protocol: icmp, ctstate: ESTABLISHED }
when:
- rhel9cis_firewall == "iptables"
- rhel9cis_rule_3_4_4_2_3
- rhel9cis_ipv6_required
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.4.2.3
- name: "3.4.4.2.4 | L1 | PATCH | Ensure ip6tables firewall rules exist for all open ports"
block:
- name: "3.4.4.2.4 | L1 | AUDIT | Ensure ip6tables firewall rules exist for all open ports | Get list of TCP6 open ports"
shell: netstat -ant |grep "tcp6.*LISTEN" | awk '{ print $4 }'| sed 's/.*://'
changed_when: false
failed_when: false
register: rhel9cis_3_4_4_2_4_otcp
- name: "3.4.4.2.4 | L1 | PATCH |Ensure ip6tables firewall rules exist for all open ports| Adjust open tcp6 ports"
iptables:
action: append
chain: INPUT
protocol: tcp
destination_port: "{{ item }}"
match: state
ctstate: NEW
jump: ACCEPT
ip_version: ipv6
with_items:
- "{{ rhel9cis_3_4_4_2_4_otcp.stdout_lines }}"
when: rhel9cis_3_4_4_2_4_otcp.stdout is defined
when:
- rhel9cis_firewall == "iptables"
- rhel9cis_rule_3_4_4_2_4
- rhel9cis_ipv6_required
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.4.2.4
- name: "3.4.4.2.5 | L1 | PATCH | Ensure ip6tables service is enabled and active | Check if ip6tables is enabled"
service:
name: ip6tables
enabled: yes
state: started
when:
- rhel9cis_firewall == "iptables"
- rhel9cis_rule_3_4_4_2_5
tags:
- level1-server
- level1-workstation
- patch
- rule_3.4.4.2.5

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@ -0,0 +1,32 @@
---
- name: "3.5 | L1 | PATCH | Ensure wireless interfaces are disabled"
block:
- name: "3.5 | L1 | AUDIT | Ensure wireless interfaces are disabled | Check if nmcli command is available"
command: rpm -q NetworkManager
changed_when: false
failed_when: false
check_mode: no
args:
warn: no
register: rhel_09_nmcli_available
- name: "3.5 | L1 | AUDIT | Ensure wireless interfaces are disabled | Check if wifi is enabled"
command: nmcli radio wifi
register: rhel_09_wifi_enabled
changed_when: rhel_09_wifi_enabled.stdout != "disabled"
failed_when: false
when: rhel_09_nmcli_available.rc == 0
- name: "3.5 | L1 | PATCH | Ensure wireless interfaces are disabled | Disable wifi if enabled"
command: nmcli radio all off
changed_when: false
failed_when: false
when: rhel_09_wifi_enabled is changed
when:
- rhel9cis_rule_3_5
tags:
- level1-server
- level2-workstation
- patch
- rule_3.5

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@ -0,0 +1,17 @@
---
- name: "3.6 | L2 | PATCH | Disable IPv6"
replace:
dest: /etc/default/grub
regexp: '(^GRUB_CMDLINE_LINUX\s*\=\s*)(?:")(.+)(?<!ipv6.disable=1)(?:")'
replace: '\1"\2 ipv6.disable=1"'
follow: yes
notify: grub2cfg
when:
- not rhel9cis_ipv6_required
- rhel9cis_rule_3_6
tags:
- level2-server
- level2-workstation
- patch
- rule_3.6

41
tasks/section_3/main.yml Normal file
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@ -0,0 +1,41 @@
---
- name: "SECTION | 3.1.x | Packet and IP redirection"
include: cis_3.1.x.yml
- name: "SECTION | 3.2.x | Network Parameters (Host Only)"
include: cis_3.2.x.yml
- name: "SECTION | 3.3.x | Uncommon Network Protocols"
include: cis_3.3.x.yml
- name: "SECTION | 3.4.1.x | firewall defined"
include: cis_3.4.1.1.yml
- name: "SECTION | 3.4.2.x | firewalld firewall"
include: cis_3.4.2.x.yml
when:
- rhel9cis_firewall == "firewalld"
- name: "SECTION | 3.4.3.x | Configure nftables firewall"
include: cis_3.4.3.x.yml
when:
- rhel9cis_firewall == "nftables"
- name: "SECTION | 3.4.4.1.x | Configure iptables IPv4"
include: cis_3.4.4.1.x.yml
when:
- rhel9cis_firewall == "iptables"
- name: "SECTION | 3.4.4.2.x | Configure iptables IPv6"
include: cis_3.4.4.2.x.yml
when:
- ( rhel9cis_firewall == "iptables" and rhel9cis_ipv6_required )
- name: "SECTION | 3.5 | Configure wireless"
include: cis_3.5.yml
- name: "SECTION | 3.5 | disable IPv6"
include: cis_3.5.yml
when:
- not rhel9cis_ipv6_required

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@ -0,0 +1,103 @@
---
- name: "4.1.1.1 | L2 | PATCH | Ensure auditd is installed"
block:
- name: "4.1.1.1 | L2 | PATCH | Ensure auditd is installed | Install auditd packages"
package:
name: audit
state: present
when: '"auditd" not in ansible_facts.packages'
- name: "4.1.1.1 | L2 | PATCH | Ensure auditd is installed | Install auditd-lib packages"
package:
name: audit-libs
state: present
when: '"auditd-lib" not in ansible_facts.packages'
when:
- rhel9cis_rule_4_1_1_1
tags:
- level2-server
- level2-workstation
- patch
- rule_4.1.1.1
- name: "4.1.1.2 | L2 | PATCH | Ensure auditd service is enabled"
service:
name: auditd
state: started
enabled: yes
when:
- not rhel9cis_skip_for_travis
- rhel9cis_rule_4_1_1_2
- ansible_connection != 'docker'
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.1.2
- name: "4.1.1.3 | L2 | PATCH | Ensure auditing for processes that start prior to auditd is enabled"
block:
- name: "4.1.1.3 | L2 | AUDIT | Ensure auditing for processes that start prior to auditd is enabled | Get GRUB_CMDLINE_LINUX"
shell: grep 'GRUB_CMDLINE_LINUX=' /etc/default/grub | sed 's/.$//'
changed_when: false
failed_when: false
check_mode: no
register: rhel9cis_4_1_1_3_grub_cmdline_linux
- name: "4.1.1.3 | L2 | PATCH | Ensure auditing for processes that start prior to auditd is enabled | Replace existing setting"
replace:
dest: /etc/default/grub
regexp: 'audit=.'
replace: 'audit=1'
notify: grub2cfg
when: "'audit=' in rhel9cis_4_1_1_3_grub_cmdline_linux.stdout"
- name: "4.1.1.3 | L2 | PATCH | Ensure auditing for processes that start prior to auditd is enabled | Add audit setting if missing"
lineinfile:
path: /etc/default/grub
regexp: '^GRUB_CMDLINE_LINUX='
line: '{{ rhel9cis_4_1_1_3_grub_cmdline_linux.stdout }} audit=1"'
notify: grub2cfg
when: "'audit=' not in rhel9cis_4_1_1_3_grub_cmdline_linux.stdout"
when:
- rhel9cis_rule_4_1_1_3
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.1.3
- name: "4.1.1.4 | L2 | PATCH | Ensure audit_backlog_limit is sufficient"
block:
- name: "4.1.1.4 | L2 | AUDIT | Ensure audit_backlog_limit is sufficient | Get GRUB_CMDLINE_LINUX"
shell: grep 'GRUB_CMDLINE_LINUX=' /etc/default/grub | sed 's/.$//'
changed_when: false
failed_when: false
check_mode: no
register: rhel9cis_4_1_1_4_grub_cmdline_linux
- name: "4.1.1.4 | L2 | PATCH | Ensure audit_backlog_limit is sufficient | Replace existing setting"
replace:
dest: /etc/default/grub
regexp: 'audit_backlog_limit=\d+'
replace: 'audit_backlog_limit={{ rhel9cis_audit_back_log_limit }}'
notify: grub2cfg
when: "'audit_backlog_limit=' in rhel9cis_4_1_1_4_grub_cmdline_linux.stdout"
- name: "4.1.1.4 | L2 | PATCH | Ensure audit_backlog_limit is sufficient | Add audit_backlog_limit setting if missing"
lineinfile:
path: /etc/default/grub
regexp: '^GRUB_CMDLINE_LINUX='
line: '{{ rhel9cis_4_1_1_4_grub_cmdline_linux.stdout }} audit_backlog_limit={{ rhel9cis_audit_back_log_limit }}"'
notify: grub2cfg
when: "'audit_backlog_limit=' not in rhel9cis_4_1_1_4_grub_cmdline_linux.stdout"
when:
- rhel9cis_rule_4_1_1_4
tags:
- level2-server
- level2-workstation
- patch
- rule_4.1.1.4

View file

@ -0,0 +1,53 @@
---
- name: "4.1.2.1 | L2 | PATCH | Ensure audit log storage size is configured"
lineinfile:
dest: /etc/audit/auditd.conf
regexp: "^max_log_file( |=)"
line: "max_log_file = {{ rhel9cis_max_log_file_size }}"
state: present
notify: restart auditd
when:
- rhel9cis_rule_4_1_2_1
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.2.1
- name: "4.1.2.2 | L2 | PATCH | Ensure audit logs are not automatically deleted"
lineinfile:
dest: /etc/audit/auditd.conf
regexp: "^max_log_file_action"
line: "max_log_file_action = {{ rhel9cis_auditd['max_log_file_action'] }}"
state: present
notify: restart auditd
when:
- rhel9cis_rule_4_1_2_2
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.2.2
- name: "4.1.2.3 | L2 | PATCH | Ensure system is disabled when audit logs are full"
lineinfile:
dest: /etc/audit/auditd.conf
regexp: "{{ item.regexp }}"
line: "{{ item.line }}"
state: present
notify: restart auditd
with_items:
- { regexp: '^admin_space_left_action', line: 'admin_space_left_action = {{ rhel9cis_auditd.admin_space_left_action }}' }
- { regexp: '^action_mail_acct', line: 'action_mail_acct = {{ rhel9cis_auditd.action_mail_acct }}' }
- { regexp: '^space_left_action', line: 'space_left_action = {{ rhel9cis_auditd.space_left_action }}' }
when:
- rhel9cis_rule_4_1_2_3
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.2.3

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@ -0,0 +1,205 @@
---
- name: "4.1.3 | L2 | PATCH | Ensure changes to system administration scope (sudoers) is collected"
debug:
msg: "Control being set via Handler 'update auditd' which writes to /etc/audit.d/99_auditd.rules"
notify: update auditd
when:
- rhel9cis_rule_4_1_3
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.3
- name: "4.1.4 | L2 | PATCH | Ensure login and logout events are collected"
debug:
msg: "Control being set via Handler 'update auditd' which writes to /etc/audit.d/99_auditd.rules"
notify: update auditd
when:
- rhel9cis_rule_4_1_4
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.4
- name: "4.1.5 | L2 | PATCH | Ensure session initiation information is collected"
debug:
msg: "Control being set via Handler 'update auditd' which writes to /etc/audit.d/99_auditd.rules"
notify: update auditd
when:
- rhel9cis_rule_4_1_5
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.5
- name: "4.1.6 | L2 | PATCH | Ensure events that modify date and time information are collected"
debug:
msg: "Control being set via Handler 'update auditd' which writes to /etc/audit.d/99_auditd.rules"
notify: update auditd
when:
- rhel9cis_rule_4_1_6
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.6
- name: "4.1.7 | L2 | PATCH | Ensure events that modify the system's Mandatory Access Controls are collected"
debug:
msg: "Control being set via Handler 'update auditd' which writes to /etc/audit.d/99_auditd.rules"
notify: update auditd
when:
- rhel9cis_rule_4_1_7
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.7
- name: "4.1.8 | L2 | PATCH | Ensure events that modify the system's network environment are collected"
debug:
msg: "Control being set via Handler 'update auditd' which writes to /etc/audit.d/99_auditd.rules"
notify: update auditd
when:
- rhel9cis_rule_4_1_8
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.8
- name: "4.1.9 | L2 | PATCH | Ensure discretionary access control permission modification events are collected"
debug:
msg: "Control being set via Handler 'update auditd' which writes to /etc/audit.d/99_auditd.rules"
notify: update auditd
when:
- rhel9cis_rule_4_1_9
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.9
- name: "4.1.10 | L2 | PATCH | Ensure unsuccessful unauthorized file access attempts are collected"
debug:
msg: "Control being set via Handler 'update auditd' which writes to /etc/audit.d/99_auditd.rules"
notify: update auditd
when:
- rhel9cis_rule_4_1_10
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.10
- name: "4.1.11 | L2 | PATCH | Ensure events that modify user/group information are collected"
debug:
msg: "Control being set via Handler 'update auditd' which writes to /etc/audit.d/99_auditd.rules"
notify: update auditd
when:
- rhel9cis_rule_4_1_11
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.11
- name: "4.1.12 | L2 | PATCH | Ensure successful file system mounts are collected"
block:
- name: "4.1.12 | L2 | AUDIT | Ensure successful file system mounts are collected"
shell: for i in $(df | grep '^/dev' | awk '{ print $NF }'); do find $i -xdev -type f -perm -4000 -o -type f -perm -2000 2>/dev/null; done
changed_when: false
failed_when: false
check_mode: no
register: priv_procs
- name: "4.1.12 | L2 | PATCH | Ensure successful file system mounts are collected"
debug:
msg: "Control being set via Handler 'update auditd' which writes to /etc/audit.d/99_auditd.rules"
notify: update auditd
when:
- rhel9cis_rule_4_1_12
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.12
- name: "4.1.13 | L2 | PATCH | Ensure use of privileged commands is collected"
debug:
msg: "Control being set via Handler 'update auditd' which writes to /etc/audit.d/99_auditd.rules"
notify: update auditd
when:
- rhel9cis_rule_4_1_13
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.13
- name: "4.1.14 | L2 | PATCH | Ensure file deletion events by users are collected"
debug:
msg: "Control being set via Handler 'update auditd' which writes to /etc/audit.d/99_auditd.rules"
notify: update auditd
when:
- rhel9cis_rule_4_1_14
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.14
- name: "4.1.15 | L2 | PATCH | Ensure kernel module loading and unloading is collected"
debug:
msg: "Control being set via Handler 'update auditd' which writes to /etc/audit.d/99_auditd.rules"
notify: update auditd
when:
- rhel9cis_rule_4_1_15
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.15
- name: "4.1.16 | L2 | PATCH | Ensure system administrator actions (sudolog) are collected"
debug:
msg: "Control being set via Handler 'update auditd' which writes to /etc/audit.d/99_auditd.rules"
notify: update auditd
when:
- rhel9cis_rule_4_1_16
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.16
- name: "4.1.17 | L2 | PATCH | Ensure the audit configuration is immutable"
debug:
msg: "Control being set via Handler 'update auditd' which writes to /etc/audit.d/99_auditd.rules"
notify: update auditd
when:
- rhel9cis_rule_4_1_17
tags:
- level2-server
- level2-workstation
- auditd
- patch
- rule_4.1.17

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@ -0,0 +1,177 @@
---
- name: "4.2.1.1 | L1 | PATCH | Ensure rsyslog installed"
package:
name: rsyslog
state: present
when:
- "'rsyslog' not in ansible_facts.packages"
- rhel9cis_rule_4_2_1_1
tags:
- level1-server
- level1-workstation
- patch
- rule_4.2.1.1
- name: "4.2.1.2 | L1 | PATCH | Ensure rsyslog Service is enabled"
service:
name: rsyslog
enabled: yes
when:
- rhel9cis_rule_4_2_1_2
tags:
- level1-server
- level1-workstation
- patch
- rsyslog
- rule_4.2.1.2
- name: "4.2.1.3 | L1 | PATCH | Ensure rsyslog default file permissions configured"
lineinfile:
dest: /etc/rsyslog.conf
regexp: '^\$FileCreateMode'
line: '$FileCreateMode 0640'
notify: restart rsyslog
when:
- rhel9cis_rule_4_2_1_3
tags:
- level1-server
- level1-workstation
- patch
- rule_4.2.1.3
- name: "4.2.1.4 | L1 | PATCH | Ensure logging is configured"
block:
- name: "4.2.1.4 | L1 | AUDIT | Ensure logging is configured | rsyslog current config message out"
command: cat /etc/rsyslog.conf
become: yes
changed_when: false
failed_when: no
check_mode: no
register: rhel_09_4_2_1_4_audit
- name: "4.2.1.4 | L1 | AUDIT | Ensure logging is configured | rsyslog current config message out"
debug:
msg:
- "These are the current logging configurations for rsyslog, please review:"
- "{{ rhel_09_4_2_1_4_audit.stdout_lines }}"
- name: "4.2.1.4 | L1 | PATCH | Ensure logging is configured | mail.* log setting"
blockinfile:
path: /etc/rsyslog.conf
state: present
marker: "# {mark} MAIL LOG SETTINGS (ANSIBLE MANAGED)"
block: |
# mail logging additions to meet CIS standards
mail.* -/var/log/mail
mail.info -/var/log/mail.info
mail.warning -/var/log/mail.warning
mail.err /var/log/mail.err
insertafter: '# Log all the mail messages in one place.'
notify: restart rsyslog
when: rhel9cis_rsyslog_ansiblemanaged
- name: "4.2.1.4 | L1 | PATCH | Ensure logging is configured | news.crit log setting"
blockinfile:
path: /etc/rsyslog.conf
state: present
marker: "# {mark} NEWS LOG SETTINGS (ANSIBLE MANAGED)"
block: |
# news logging additions to meet CIS standards
news.crit -/var/log/news/news.crit
news.notice -/var/log/news/news.crit
insertafter: '# Save news errors of level crit and higher in a special file.'
notify: restart rsyslog
when: rhel9cis_rsyslog_ansiblemanaged
- name: "4.2.1.4 | L1 | PATCH | Ensure logging is configured | Misc. log setting"
blockinfile:
path: /etc/rsyslog.conf
state: present
marker: "# {mark} MISC. LOG SETTINGS (ANSIBLE MANAGED)"
block: |
# misc. logging additions to meet CIS standards
*.=warning;*.=err -/var/log/warn
*.crit /var/log/warn
*.*;mail.none;news.none /var/log/messages
insertafter: '#### RULES ####'
notify: restart rsyslog
when: rhel9cis_rsyslog_ansiblemanaged
- name: "4.2.1.4 | L1 | PATCH | Ensure logging is configured | Local log settings"
blockinfile:
path: /etc/rsyslog.conf
state: present
marker: "#{mark} LOCAL LOG SETTINGS (ANSIBLE MANAGED)"
block: |
# local log settings
local0,local1.* -/var/log/localmessages
local2,local3.* -/var/log/localmessages
local4,local5.* -/var/log/localmessages
local6,local7.* -/var/log/localmessages
*.emrg :omusrmsg:*
insertafter: '#### RULES ####'
notify: restart rsyslog
when:
- rhel9cis_rule_4_2_1_4
tags:
- level1-server
- level1-workstation
- patch
- rsyslog
- rule_4.2.1.4
- name: "4.2.1.5 | L1 | PATCH | Ensure rsyslog is configured to send logs to a remote log host"
blockinfile:
path: /etc/rsyslog.conf
state: present
block: |
# remote host is: name/ip:port, e.g. 192.168.0.1:514, port optional
*.* @@{{ rhel9cis_remote_log_server }}
insertafter: EOF
register: result
failed_when:
- result is failed
- result.rc != 257
notify: restart rsyslog
when:
- rhel9cis_rule_4_2_1_5
- rhel9cis_remote_log_server is defined
tags:
- level1-server
- level1-workstation
- patch
- rule_4.2.1.5
- rsyslog
- name: "4.2.1.6 | L1 | PATCH | Ensure remote rsyslog messages are only accepted on designated log hosts."
block:
- name: "4.2.1.6 | L1 | PATCH | Ensure remote rsyslog messages are only accepted on designated log hosts. | When not log host"
replace:
path: /etc/rsyslog.conf
regexp: '({{ item }})'
replace: '#\1'
notify: restart rsyslog
with_items:
- '^(\$ModLoad imtcp)'
- '^(\$InputTCPServerRun)'
when: not rhel9cis_system_is_log_server
- name: "4.2.1.6 | L1 | PATCH | Ensure remote rsyslog messages are only accepted on designated log hosts. | When log host"
replace:
path: /etc/rsyslog.conf
regexp: '^#(.*{{ item }}.*)'
replace: '\1'
notify: restart rsyslog
with_items:
- 'ModLoad imtcp'
- 'InputTCPServerRun'
when: rhel9cis_system_is_log_server
when:
- rhel9cis_rule_4_2_1_6
tags:
- level1-server
- level1-workstation
- patch
- rule_4.2.1.6
- rsyslog

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@ -0,0 +1,43 @@
---
- name: "4.2.2.1 | L1 | PATCH | Ensure journald is configured to send logs to rsyslog"
lineinfile:
dest: /etc/systemd/journald.conf
regexp: "^#ForwardToSyslog=|^ForwardToSyslog="
line: ForwardToSyslog=yes
state: present
when:
- rhel9cis_rule_4_2_2_1
tags:
- level1-server
- level1-workstation
- patch
- rule_4.2.2.1
- name: "4.2.2.2 | L1 | PATCH | Ensure journald is configured to compress large log files"
lineinfile:
dest: /etc/systemd/journald.conf
regexp: "^#Compress=|^Compress="
line: Compress=yes
state: present
when:
- rhel9cis_rule_4_2_2_2
tags:
- level1-server
- level1-workstation
- patch
- rule_4.2.2.2
- name: "4.2.2.3 | L1 | PATCH | Ensure journald is configured to write logfiles to persistent disk"
lineinfile:
dest: /etc/systemd/journald.conf
regexp: "^#Storage=|^Storage="
line: Storage=persistent
state: present
when:
- rhel9cis_rule_4_2_2_3
tags:
- level1-server
- level1-workstation
- patch
- rule_4.2.2.3

View file

@ -0,0 +1,13 @@
---
- name: "4.2.3 | L1 | PATCH | Ensure permissions on all logfiles are configured"
command: find /var/log -type f -exec chmod g-wx,o-rwx "{}" +
changed_when: false
failed_when: false
when:
- rhel9cis_rule_4_2_3
tags:
- level1-server
- level1-workstation
- patch
- rule_4.2.3

View file

@ -0,0 +1,24 @@
---
- name: "4.3 | L1 | PATCH | Ensure logrotate is configured"
block:
- name: "4.3 | L1 | AUDIT | Ensure logrotate is configured | Get logrotate settings"
find:
paths: /etc/logrotate.d/
register: log_rotates
- name: "4.3 | L1 | PATCH | Ensure logrotate is configured"
replace:
path: "{{ item.path }}"
regexp: '^(\s*)(daily|weekly|monthly|yearly)$'
replace: "\\1{{ rhel9cis_logrotate }}"
with_items:
- "{{ log_rotates.files }}"
- { path: "/etc/logrotate.conf" }
when:
- rhel9cis_rule_4_3
tags:
- level1-server
- level1-workstation
- patch
- rule_4.3

23
tasks/section_4/main.yml Normal file
View file

@ -0,0 +1,23 @@
---
- name: "SECTION | 4.1| Configure System Accounting (auditd)"
include: cis_4.1.1.x.yml
- name: "SECTION | 4.1.2.x| Configure Data Retention"
include: cis_4.1.2.x.yml
- name: "SECTION | 4.1.x| Auditd rules"
include: cis_4.1.x.yml
- name: "SECTION | 4.2.x| Configure Logging"
include: cis_4.2.1.x.yml
when: rhel9cis_syslog == 'rsyslog'
- name: "SECTION | 4.2.2.x| Configure journald"
include: cis_4.2.2.x.yml
- name: "SECTION | 4.2.3 | Configure logile perms"
include: cis_4.2.3.yml
- name: "SECTION | 4.3 | Configure logrotate"
include: cis_4.3.yml

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@ -0,0 +1,147 @@
---
- name: "5.1.1 | L1 | PATCH | Ensure cron daemon is enabled"
service:
name: crond
enabled: yes
when:
- rhel9cis_rule_5_1_1
tags:
- level1-server
- level1-workstation
- patch
- rule_5.1.1
- name: "5.1.2 | L1 | PATCH | Ensure permissions on /etc/crontab are configured"
file:
dest: /etc/crontab
owner: root
group: root
mode: 0600
when:
- rhel9cis_rule_5_1_2
tags:
- level1-server
- level1-workstation
- patch
- rule_5.1.2
- name: "5.1.3 | L1 | PATCH | Ensure permissions on /etc/cron.hourly are configured"
file:
dest: /etc/cron.hourly
state: directory
owner: root
group: root
mode: 0700
when:
- rhel9cis_rule_5_1_3
tags:
- level1-server
- level1-workstation
- patch
- rule_5.1.3
- name: "5.1.4 | L1 | PATCH | Ensure permissions on /etc/cron.daily are configured"
file:
dest: /etc/cron.daily
state: directory
owner: root
group: root
mode: 0700
when:
- rhel9cis_rule_5_1_4
tags:
- level1-server
- level1-workstation
- patch
- rule_5.1.4
- name: "5.1.5 | L1 | PATCH | Ensure permissions on /etc/cron.weekly are configured"
file:
dest: /etc/cron.weekly
state: directory
owner: root
group: root
mode: 0700
when:
- rhel9cis_rule_5_1_5
tags:
- level1-server
- level1-workstation
- patch
- rule_5.1.5
- name: "5.1.6 | L1 | PATCH | Ensure permissions on /etc/cron.monthly are configured"
file:
dest: /etc/cron.monthly
state: directory
owner: root
group: root
mode: 0700
when:
- rhel9cis_rule_5_1_6
tags:
- level1-server
- level1-workstation
- patch
- rule_5.1.6
- name: "5.1.7 | L1 | PATCH | Ensure permissions on /etc/cron.d are configured"
file:
dest: /etc/cron.d
state: directory
owner: root
group: root
mode: 0700
when:
- rhel9cis_rule_5_1_7
tags:
- level1-server
- level1-workstation
- patch
- rule_5.1.7
- name: "5.1.8 | L1 | PATCH | Ensure at/cron is restricted to authorized users"
block:
- name: "5.1.8 | L1 | PATCH | Ensure at/cron is restricted to authorized users | Remove at.deny"
file:
dest: /etc/at.deny
state: absent
- name: "5.1.8 | L1 | PATCH | Ensure at/cron is restricted to authorized users | Check if at.allow exists"
stat:
path: "/etc/at.allow"
register: p
- name: "5.1.8 | L1 | PATCH | Ensure at/cron is restricted to authorized users | Ensure at.allow is restricted to authorized users"
file:
dest: /etc/at.allow
state: '{{ "file" if p.stat.exists else "touch" }}'
owner: root
group: root
mode: 0600
- name: "5.1.8 | L1 | PATCH | Ensure at/cron is restricted to authorized users | Remove cron.deny"
file:
dest: /etc/cron.deny
state: absent
- name: "5.1.8 | L1 | PATCH | Ensure at/cron is restricted to authorized users | Check if cron.allow exists"
stat:
path: "/etc/cron.allow"
register: p
- name: "5.1.8 | L1 | PATCH | Ensure at/cron is restricted to authorized users | Ensure cron.allow is restricted to authorized users"
file:
dest: /etc/cron.allow
state: '{{ "file" if p.stat.exists else "touch" }}'
owner: root
group: root
mode: 0600
when:
- rhel9cis_rule_5_1_8
tags:
- level1-server
- level1-workstation
- patch
- rule_5.1.8

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@ -0,0 +1,345 @@
---
- name: "5.2.1 | L1 | PATCH | Ensure permissions on /etc/ssh/sshd_config are configured"
file:
dest: /etc/ssh/sshd_config
state: file
owner: root
group: root
mode: 0600
when:
- rhel9cis_rule_5_2_1
tags:
- level1-server
- level1-workstation
- patch
- rule_5.2.1
- name: "5.2.2 | L1 | PATCH | Ensure SSH access is limited"
block:
- name: "5.2.2 | L1 | PATCH | Ensure SSH access is limited | Add line to sshd_config for allowusers"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: "^AllowUsers"
line: AllowUsers {{ rhel9cis_sshd['allowusers'] }}
notify: restart sshd
when: "rhel9cis_sshd['allowusers']|default('') | length > 0"
- name: "5.2.2 | L1 | PATCH | Ensure SSH access is limited | Add line to sshd_config for allowgroups"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: "^AllowGroups"
line: AllowGroups {{ rhel9cis_sshd['allowgroups'] }}
notify: restart sshd
when: "rhel9cis_sshd['allowgroups']|default('') | length > 0"
- name: "5.2.2 | L1 | PATCH | Ensure SSH access is limited | Add line to sshd_config for denyusers"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: "^DenyUsers"
line: DenyUsers {{ rhel9cis_sshd['denyusers'] }}
notify: restart sshd
when: "rhel9cis_sshd['denyusers']|default('') | length > 0"
- name: "5.2.2 | L1 | PATCH | Ensure SSH access is limited | Add line to sshd_config for denygroups"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: "^DenyGroups"
line: DenyGroups {{ rhel9cis_sshd['denygroups'] }}
notify: restart sshd
when: "rhel9cis_sshd['denygroups']|default('') | length > 0"
when:
- rhel9cis_rule_5_2_2
tags:
- level1-server
- level1-workstation
- patch
- rule_5.2.2
- name: "5.2.3 | L1 | PATCH | Ensure permissions on SSH private host key files are configured"
block:
- name: "5.2.3 | L1 | AUDIT | Ensure permissions on SSH private host key files are configured | Find the SSH private host keys"
find:
paths: /etc/ssh
patterns: 'ssh_host_*_key'
recurse: true
file_type: any
register: rhel9cis_5_2_3_ssh_private_host_key
- name: "5.2.3 | L1 | PATCH | Ensure permissions on SSH private host key files are configured | Set permissions on SSH private host keys"
file:
path: "{{ item.path }}"
owner: root
group: root
mode: 0600
with_items:
- "{{ rhel9cis_5_2_3_ssh_private_host_key.files }}"
when:
- rhel9cis_rule_5_2_3
tags:
- level1-server
- level1-workstation
- patch
- rule_5.2.3
- name: "5.2.4 | L1 | PATCH | Ensure permissions on SSH public host key files are configured"
block:
- name: "5.2.4 | L1 | AUDIT | Ensure permissions on SSH public host key files are configured | Find the SSH public host keys"
find:
paths: /etc/ssh
patterns: 'ssh_host_*_key.pub'
recurse: true
file_type: any
register: rhel9cis_5_2_4_ssh_public_host_key
- name: "5.2.4 | L1 | PATCH | Ensure permissions on SSH public host key files are configured | Set permissions on SSH public host keys"
file:
path: "{{ item.path }}"
owner: root
group: root
mode: 0644
with_items:
- "{{ rhel9cis_5_2_4_ssh_public_host_key.files }}"
when:
- rhel9cis_rule_5_2_4
tags:
- level1-server
- level1-workstation
- patch
- rule_5.2.4
- name: "5.2.5 | L1 | PATCH | Ensure SSH LogLevel is appropriate"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: "^#LogLevel|^LogLevel"
line: 'LogLevel {{ rhel9cis_ssh_loglevel }}'
when:
- rhel9cis_rule_5_2_5
tags:
- level1-server
- level1-workstation
- patch
- rule_5.2.5
- name: "5.2.6 | L2 | PATCH | Ensure SSH X11 forwarding is disabled"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: "^#X11Forwarding|^X11Forwarding"
line: 'X11Forwarding no'
when:
- rhel9cis_rule_5_2_6
tags:
- level2-server
- level1-workstation
- patch
- rule_5.2.6
- name: "5.2.7 | L1 | PATCH | Ensure SSH MaxAuthTries is set to 4 or less"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: '^(#)?MaxAuthTries \d'
line: 'MaxAuthTries 4'
when:
- rhel9cis_rule_5_2_7
tags:
- level1-server
- level1-workstation
- patch
- rule_5.2.7
- name: "5.2.8 | L1 | PATCH | Ensure SSH IgnoreRhosts is enabled"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: "^#IgnoreRhosts|^IgnoreRhosts"
line: 'IgnoreRhosts yes'
when:
- rhel9cis_rule_5_2_8
tags:
- level1-server
- level1-workstation
- patch
- rule_5.2.8
- name: "5.2.9 | L1 | PATCH | Ensure SSH HostbasedAuthentication is disabled"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: ^#HostbasedAuthentication|^HostbasedAuthentication"
line: 'HostbasedAuthentication no'
when:
- rhel9cis_rule_5_2_9
tags:
- level1-server
- level1-workstation
- patch
- rule_5.2.9
- name: "5.2.10 | L1 | PATCH | Ensure SSH root login is disabled"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: "^#PermitRootLogin|^PermitRootLogin"
line: 'PermitRootLogin no'
when:
- rhel9cis_rule_5_2_10
tags:
- level1-server
- level1-workstation
- patch
- rule_5.2.10
- name: "5.2.11 | L1 | PATCH | Ensure SSH PermitEmptyPasswords is disabled"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: "^#PermitEmptyPasswords|^PermitEmptyPasswords"
line: 'PermitEmptyPasswords no'
when:
- rhel9cis_rule_5_2_11
tags:
- level1-server
- level1-workstation
- patch
- rule_5.2.11
- name: "5.2.12 | L1 | PATCH | Ensure SSH PermitUserEnvironment is disabled"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: "^#PermitUserEnvironment|^PermitUserEnvironment"
line: 'PermitUserEnvironment no'
when:
- rhel9cis_rule_5_2_12
tags:
- level1-server
- level1-workstation
- patch
- rule_5.2.12
- name: "5.2.13 | L1 | PATCH | Ensure SSH Idle Timeout Interval is configured"
block:
- name: "5.2.13 | L1 | PATCH | Ensure SSH Idle Timeout Interval is configured | Add line in sshd_config for ClientAliveInterval"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: '^ClientAliveInterval'
line: "ClientAliveInterval {{ rhel9cis_sshd['clientaliveinterval'] }}"
- name: "5.2.13 | L1 | PATCH | Ensure SSH Idle Timeout Interval is configured | Ensure SSH ClientAliveCountMax set to <= 3"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: '^ClientAliveCountMax'
line: "ClientAliveCountMax {{ rhel9cis_sshd['clientalivecountmax'] }}"
when:
- rhel9cis_rule_5_2_13
tags:
- level1-server
- level1-workstation
- patch
- rule_5.2.13
- name: "5.2.14 | L1 | PATCH | Ensure SSH LoginGraceTime is set to one minute or less"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: "^#LoginGraceTime|^LoginGraceTime"
line: "LoginGraceTime {{ rhel9cis_sshd['logingracetime'] }}"
when:
- rhel9cis_rule_5_2_14
tags:
- level1-server
- level1-workstation
- patch
- rule_5.2.14
- name: "5.2.15 | L1 | PATCH | Ensure SSH warning banner is configured"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: '^Banner'
line: 'Banner /etc/issue.net'
when:
- rhel9cis_rule_5_2_15
tags:
- level1-server
- level1-workstation
- patch
- rule_5.2.15
- name: "5.2.16 | L1 | PATCH | Ensure SSH PAM is enabled"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: "^#UsePAM|^UsePAM"
line: 'UsePAM yes'
when:
- rhel9cis_rule_5_2_16
tags:
- level1-server
- level1-workstation
- patch
- rule_5.2.16
- name: "5.2.17 | L2 | PATCH | Ensure SSH AllowTcpForwarding is disabled"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: "^#AllowTcpForwarding|^AllowTcpForwarding"
line: 'AllowTcpForwarding no'
when:
- rhel9cis_rule_5_2_17
tags:
- level2-server
- level2-workstation
- patch
- rule_5.2.17
- name: "5.2.18 | L1 | PATCH | Ensure SSH MaxStartups is configured"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: "^#MaxStartups|^MaxStartups"
line: 'MaxStartups 10:30:60'
when:
- rhel9cis_rule_5_2_18
tags:
- level1-server
- level1-workstation
- patch
- rule_5.2.18
- name: "5.2.19 | L1 | PATCH | Ensure SSH MaxSessions is set to 4 or less"
lineinfile:
state: present
dest: /etc/ssh/sshd_config
regexp: "^#MaxSessions|^MaxSessions"
line: 'MaxSessions {{ rhel9cis_ssh_maxsessions }}'
when:
- rhel9cis_rule_5_2_19
tags:
- level1-server
- level1-workstation
- patch
- rule_5.2.19
- name: "5.2.20 | L1 | PATCH | Ensure system-wide crypto policy is not over-ridden"
shell: sed -ri "s/^\s*(CRYPTO_POLICY\s*=.*)$/# \1/" /etc/sysconfig/sshd
args:
warn: no
notify: restart sshd
when:
- rhel9cis_rule_5_2_20
tags:
- level1-server
- level1-workstation
- patch
- rule_5.2.20

View file

@ -0,0 +1,90 @@
---
- name: "5.3.1 | L1 | PATCH | Create custom authselect profile"
block:
- name: "5.3.1 | L1 | PATCH | Create custom authselect profile | Gather profiles"
shell: 'authselect current | grep "Profile ID: custom/"'
failed_when: false
changed_when: false
check_mode: no
register: rhel9cis_5_3_1_profiles
- name: "5.3.1 | L1 | AUDIT | Create custom authselect profile | Show profiles"
debug:
msg:
- "Below are the current custom profiles"
- "{{ rhel9cis_5_3_1_profiles.stdout_lines }}"
- name: "5.3.1 | L1 | PATCH | Create custom authselect profile | Create custom profiles"
shell: authselect create-profile {{ rhel9cis_authselect['custom_profile_name'] }} -b {{ rhel9cis_authselect['default_file_to_copy'] }}
args:
warn: no
when: rhel9cis_authselect_custom_profile_create
when:
- rhel9cis_rule_5_3_1
tags:
- level1-server
- level1-workstation
- patch
- authselect
- rule_5.3.1
- name: "5.3.2 | L1 | PATCH | Select authselect profile"
block:
- name: "5.3.2 | L1 | AUDIT | Select authselect profile | Gather profiles and enabled features"
shell: "authselect current"
args:
warn: no
failed_when: false
changed_when: false
check_mode: no
register: rhel9cis_5_3_2_profiles
- name: "5.3.2 | L1 | AUDIT | Select authselect profile | Show profiles"
debug:
msg:
- "Below are the current custom profiles"
- "{{ rhel9cis_5_3_2_profiles.stdout_lines }}"
- name: "5.3.2 | L1 | PATCH | Select authselect profile | Create custom profiles"
shell: "authselect select custom/{{ rhel9cis_authselect['custom_profile_name'] }} {{ rhel9cis_authselect['options'] }}"
args:
warn: no
when: rhel9cis_authselect_custom_profile_select
when:
- rhel9cis_rule_5_3_2
tags:
- level1-server
- level1-workstation
- patch
- authselect
- rule_5.3.2
- name: "5.3.3 | L1 | PATCH | Ensure authselect includes with-faillock"
block:
- name: "5.3.3 | L1 | AUDIT | Ensure authselect includes with-faillock | Gather profiles and enabled features"
shell: "authselect current | grep with-faillock"
failed_when: false
changed_when: false
check_mode: no
register: rhel9cis_5_3_3_profiles_faillock
- name: "5.3.3 | L1 | AUDIT | Ensure authselect includes with-faillock| Show profiles"
debug:
msg:
- "Below are the current custom profiles"
- "{{ rhel9cis_5_3_3_profiles_faillock.stdout_lines }}"
- name: "5.3.3 | L1 | PATCH | Ensure authselect includes with-faillock | Create custom profiles"
shell: "authselect select custom/{{ rhel9cis_authselect['custom_profile_name'] }} with-faillock"
args:
warn: no
when: rhel9cis_authselect_custom_profile_select
when:
- rhel9cis_rule_5_3_3
tags:
- level1-server
- level1-workstation
- patch
- authselect
- rule_5.3.3

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@ -0,0 +1,131 @@
---
- name: |
"5.4.1 | L1 | PATCH | Ensure password creation requirements are configured
5.4.2 | L1 | PATCH | Ensure lockout for failed password attempts is configured
5.4.3 | L1 | PATCH | Ensure password reuse is limited
5.4.4 | L1 | PATCH | Ensure password hashing algorithm is SHA-512"
block:
- name: "5.4.1 | L1 | PATCH | Ensure password creation requirements are configured | Set pwquality config settings"
lineinfile:
state: present
dest: /etc/security/pwquality.conf
regexp: ^{{ item.name }}
line: "{{ item.name }} = {{ item.value }}"
with_items:
- { name: minlen, value: "{{ rhel9cis_pam_password.minlen }}" }
- { name: minclass, value: "{{ rhel9cis_pam_password.minclass }}" }
when: rhel9cis_rule_5_4_1
- name: |
"5.4.1 | L1 | PATCH | Ensure password creation requirements are configured | Set system-auth retry settings
5.4.3| L1 | PATCH | Ensure password reuse is limited | Set system-auth remember settings"
lineinfile:
dest: /etc/pam.d/system-auth
state: present
regexp: '^password requisite pam_pwquality.so'
line: "password requisite pam_pwquality.so try_first_pass local_users_only enforce-for-root retry=3 remember={{ rhel9cis_pam_faillock.remember }}"
insertbefore: '^#?password ?'
when:
- rhel9cis_rule_5_4_1 or
rhel9cis_rule_5_4_3
- name: "5.4.1 | L1 | PATCH | Ensure password creation requirements are configured | Set system-auth retry settings"
lineinfile:
dest: /etc/pam.d/password-auth
state: present
regexp: '^password requisite pam_pwquality.so'
line: "password requisite pam_pwquality.so try_first_pass local_users_only enforce-for-root retry=3"
insertbefore: '^#?password ?'
when: rhel9cis_rule_5_4_1
- name: "5.4.2 | L1 | PATCH | Ensure lockout for failed password attempts is configured | Add deny count and unlock time for preauth"
lineinfile:
dest: /etc/pam.d/{{ item }}
state: present
regexp: '^auth required pam_faillock.so preauth'
line: "auth required pam_faillock.so preauth silent deny={{ rhel9cis_pam_faillock.attempts }}{{ (rhel9cis_pam_faillock.fail_for_root) | ternary(' even_deny_root ',' ') }}unlock_time={{ rhel9cis_pam_faillock.unlock_time }}"
insertafter: '^#?auth ?'
with_items:
- "system-auth"
- "password-auth"
when: rhel9cis_rule_5_4_2
- name: "5.4.2 | L1 | PATCH | Ensure lockout for failed password attempts is configured | Add deny count and unlock times for authfail"
lineinfile:
dest: /etc/pam.d/{{ item }}
state: present
regexp: '^auth required pam_faillock.so authfail'
line: "auth required pam_faillock.so authfail deny={{ rhel9cis_pam_faillock.attempts }}{{ (rhel9cis_pam_faillock.fail_for_root) | ternary(' even_deny_root ',' ') }}unlock_time={{ rhel9cis_pam_faillock.unlock_time }}"
insertafter: '^#?auth ?'
with_items:
- "system-auth"
- "password-auth"
when: rhel9cis_rule_5_4_2
- name: |
"5.4.3 | L1 | PATCH | Ensure password reuse is limited | Set system-auth remember remember settings
5.4.4 | L1 | PATCH | Ensure password hashing algorithm is SHA-512 | Set system-auth pwhash settings"
lineinfile:
dest: /etc/pam.d/system-auth
state: present
regexp: '^password sufficient pam_unix.so'
line: "password sufficient pam_unix.so {{ rhel9cis_pam_faillock.pwhash }} shadow try_first_pass use_authtok remember={{ rhel9cis_pam_faillock.remember }}"
insertafter: '^#?password ?'
when:
- rhel9cis_rule_5_4_3 or
rhel9cis_rule_5_4_4
- name: "5.4.4 | L1 | PATCH | Ensure password hashing algorithm is SHA-512 | Set system-auth pwhash settings"
lineinfile:
dest: /etc/pam.d/password-auth
state: present
regexp: '^password sufficient pam_unix.so'
line: "password sufficient pam_unix.so {{ rhel9cis_pam_faillock.pwhash }} shadow try_first_pass use_authtok"
insertafter: '^#?password ?'
when: rhel9cis_rule_5_4_4
# The two steps below were added to keep authconfig from overwritting the above configs. This follows steps from here: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/security_guide/chap-hardening_your_system_with_tools_and_services
# With the steps below you will score five (5) points lower due to false positive results
- name: |
"5.4.1 | L1 | PATCH | Ensure password creation requirements are configured
5.4.2 | L1 | PATCH | Ensure lockout for failed password attempts is configured
5.4.3 | L1 | PATCH | Ensure password reuse is limited
5.4.4 | L1 | PATCH | Ensure password hashing algorithm is SHA-512"
copy:
src: /etc/pam.d/{{ item }}
dest: /etc/pam.d/{{ item }}-local
remote_src: yes
owner: root
group: root
mode: '0644'
with_items:
- "system-auth"
- "password-auth"
- name: |
"5.4.1 | L1 | PATCH | Ensure password creation requirements are configured
5.4.2 | L1 | PATCH | Ensure lockout for failed password attempts is configured
5.4.3 | L1 | PATCH | Ensure password reuse is limited
5.4.4 | L1 | PATCH | Ensure password hashing algorithm is SHA-512"
file:
src: /etc/pam.d/{{ item }}-local
dest: /etc/pam.d/{{ item }}
state: link
force: yes
with_items:
- "system-auth"
- "password-auth"
when:
- rhel9cis_rule_5_4_1 or
rhel9cis_rule_5_4_2 or
rhel9cis_rule_5_4_3 or
rhel9cis_rule_5_4_4
tags:
- level1-server
- level1-workstation
- patch
- rule_5.4.1
- rule_5.4.2
- rule_5.4.3
- rule_5.4.4

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---
- name: "5.5.1.1 | L1 | PATCH | Ensure password expiration is 365 days or less"
lineinfile:
state: present
dest: /etc/login.defs
regexp: '^PASS_MAX_DAYS'
line: "PASS_MAX_DAYS {{ rhel9cis_pass['max_days'] }}"
when:
- rhel9cis_rule_5_5_1_1
tags:
- level1-server
- level1-workstation
- patch
- rule_5.5.1.1
- name: "5.5.1.2 | L1 | PATCH | Ensure minimum days between password changes is 7 or more"
lineinfile:
state: present
dest: /etc/login.defs
regexp: '^PASS_MIN_DAYS'
line: "PASS_MIN_DAYS {{ rhel9cis_pass['min_days'] }}"
when:
- rhel9cis_rule_5_5_1_2
tags:
- level1-server
- level1-workstation
- patch
- rule_5.5.1.2
- name: "5.5.1.3 | L1 | PATCH | Ensure password expiration warning days is 7 or more"
lineinfile:
state: present
dest: /etc/login.defs
regexp: '^PASS_WARN_AGE'
line: "PASS_WARN_AGE {{ rhel9cis_pass['warn_age'] }}"
when:
- rhel9cis_rule_5_5_1_3
tags:
- level1-server
- level1-workstation
- patch
- rule_5.5.1.3
- name: "5.5.1.4 | L1 | PATCH | Ensure inactive password lock is 30 days or less"
block:
- name: "5.5.1.4 | L1 | AUDIT | Ensure inactive password lock is 30 days or less | Check current settings"
shell: useradd -D | grep INACTIVE={{ rhel9cis_inactivelock.lock_days }} | cut -f2 -d=
changed_when: false
failed_when: false
check_mode: no
register: rhel9cis_5_5_1_4_inactive_settings
- name: "5.5.1.4 | L1 | PATCH | Ensure inactive password lock is 30 days or less | Set default inactive setting"
command: useradd -D -f {{ rhel9cis_inactivelock.lock_days }}
when: rhel9cis_5_5_1_4_inactive_settings.stdout | length == 0
- name: "5.5.1.4 | L1 | AUDIT | Ensure inactive password lock is 30 days or less | Getting user list"
shell: 'egrep ^[^:]+:[^\!*] /etc/shadow | cut -d: -f1'
check_mode: no
register: rhel_09_5_5_1_4_audit
changed_when: false
- name: "5.5.1.4 | L1 | PATCH | Ensure inactive password lock is 30 days or less | Apply Inactive setting to existing accounts"
command: chage --inactive {{ rhel9cis_inactivelock.lock_days }} "{{ item }}"
with_items:
- "{{ rhel_09_5_5_1_4_audit.stdout_lines }}"
when:
- rhel9cis_rule_5_5_1_4
tags:
- level1-server
- level1-workstation
- patch
- rule_5.5.1.4
- name: "5.5.1.5 | L1 | PATCH | Ensure all users last password change date is in the past"
block:
- name: "5.5.1.5 | L1 | AUDIT | Ensure all users last password change date is in the past | Get current date in Unix Time"
shell: echo $(($(date --utc --date "$1" +%s)/86400))
failed_when: false
changed_when: false
check_mode: no
register: rhel9cis_5_5_1_5_currentut
- name: "5.5.1.5 | L1 | AUDIT | Ensure all users last password change date is in the past | Get list of users with last changed pw date in the future"
shell: "cat /etc/shadow | awk -F: '{if($3>{{ rhel9cis_5_5_1_5_currentut.stdout }})print$1}'"
changed_when: false
failed_when: false
check_mode: no
register: rhel9cis_5_5_1_5_user_list
- name: "5.5.1.5 | L1 | AUDIT | Ensure all users last password change date is in the past | Alert no pw change in the future exist"
debug:
msg: "Good News! All accounts have PW change dates that are in the past"
when: rhel9cis_5_5_1_5_user_list.stdout | length == 0
- name: "5.5.1.5 | L1 | AUDIT | Ensure all users last password change date is in the past | Alert on accounts with pw change in the future"
debug:
msg: "Warning! The following accounts have the last PW change date in the future: {{ rhel9cis_5_5_1_5_user_list.stdout_lines }}"
when:
- rhel9cis_5_5_1_5_user_list.stdout | length > 0
- not rhel9cis_futurepwchgdate_autofix
- name: "5.5.1.5 | L1 | PATCH | Ensure all users last password change date is in the past | Fix accounts with pw change in the future"
command: passwd --expire {{ item }}
when:
- rhel9cis_5_5_1_5_user_list | length > 0
- rhel9cis_futurepwchgdate_autofix
with_items:
- "{{ rhel9cis_5_5_1_5_user_list.stdout_lines }}"
when:
- rhel9cis_rule_5_5_1_5
tags:
- level1-server
- level1-workstation
- patch
- rule_5.5.1.5

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---
- name: "5.5.2 | L1 | PATCH | Ensure system accounts are secured"
block:
- name: "5.5.2 | L1 | Ensure system accounts are secured | Set nologin"
user:
name: "{{ item.id }}"
shell: /usr/sbin/nologin
with_items:
- "{{ rhel9cis_passwd }}"
when:
- item.id != "root"
- item.id != "sync"
- item.id != "shutdown"
- item.id != "halt"
- item.gid < rhel9cis_int_gid
- item.shell != " /bin/false"
- item.shell != " /usr/sbin/nologin"
- name: "5.5.2 | L1 | PATCH | Ensure system accounts are secured | Lock accounts"
user:
name: "{{ item.id }}"
password_lock: true
with_items:
- "{{ rhel9cis_passwd }}"
when:
- item.id != "halt"
- item.id != "shutdown"
- item.id != "sync"
- item.id != "root"
- item.gid < rhel9cis_int_gid
- item.shell != " /bin/false"
- item.shell != " /usr/sbin/nologin"
when:
- rhel9cis_rule_5_5_2
tags:
- level1-server
- level1-workstation
- patch
- rule_5.5.2
- name: "5.5.3 | L1 | PATCH | Ensure default user shell timeout is 900 seconds or less"
blockinfile:
create: yes
mode: 0644
dest: "{{ item.dest }}"
state: "{{ item.state }}"
marker: "# {mark} ANSIBLE MANAGED"
block: |
# Set session timeout - CIS ID RHEL-09-5.4.5
TMOUT={{ rhel9cis_shell_session_timeout.timeout }}
export TMOUT
readonly TMOUT
with_items:
- { dest: "{{ rhel9cis_shell_session_timeout.file }}", state: present }
- { dest: /etc/profile, state: "{{ (rhel9cis_shell_session_timeout.file == '/etc/profile') | ternary('present', 'absent') }}" }
when:
- rhel9cis_rule_5_5_3
tags:
- level1-server
- level1-workstation
- patch
- rule_5.5.3
- name: "5.5.4 | L1 | PATCH | Ensure default group for the root account is GID 0"
command: usermod -g 0 root
changed_when: false
failed_when: false
when:
- rhel9cis_rule_5_5_4
tags:
- level1-server
- level1-workstation
- patch
- rule_5.5.4
- name: "5.5.5 | L1 | PATCH | Ensure default user umask is 027 or more restrictive"
block:
- name: "5.5.5 | L1 | PATCH | Ensure default user umask is 027 or more restrictive | Set umask for /etc/bashrc"
replace:
path: /etc/bashrc
regexp: '(^\s+umask) 0[012][0-6]'
replace: '\1 027'
- name: "5.5.5 | L1 | PATCH | Ensure default user umask is 027 or more restrictive | Set umask for /etc/profile"
replace:
path: /etc/profile
regexp: '(^\s+umask) 0[012][0-6]'
replace: '\1 027'
when:
- rhel9cis_rule_5_5_5
tags:
- level1-server
- level1-workstation
- patch
- rule_5.5.5

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@ -0,0 +1,35 @@
---
# this will just display the list of consoles. The site will need to confirm the allowed consoles are correct and change manually if needed.
- name: "5.6 | L1 | AUDIT | Ensure root login is restricted to system console"
block:
- name: "5.6 | L1 | AUDIT | Ensure root login is restricted to system console | Check if securetty file exists"
stat:
path: /etc/securetty
register: rhel9cis_securetty_check
- name: "5.6 | L1 | AUDIT | Ensure root login is restricted to system console | Capture consoles"
command: cat /etc/securetty
changed_when: false
register: rhel_09_5_6_audit
when: rhel9cis_securetty_check.stat.exists
- name: "5.6 | L1 | AUDIT |Ensure root login is restricted to system console | Display Console"
debug:
msg:
- "These are the consoles with root login access, please review:"
- "{{ rhel_09_5_6_audit.stdout_lines }}"
when: rhel9cis_securetty_check.stat.exists
- name: "5.6 | L1 | AUDIT | Ensure root login is restricted to system console | Display that no securetty file exists"
debug:
msg:
- "There is no /etc/securetty file, this has been removed by default in RHEL9"
when: not rhel9cis_securetty_check.stat.exists
when:
- rhel9cis_rule_5_6
tags:
- level1-server
- level1-workstation
- audit
- rule_5.6

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@ -0,0 +1,22 @@
---
- name: "5.7 | L1 | PATCH | Ensure access to the su command is restricted"
block:
- name: "5.7 | L1 | PATCH | Ensure access to the su command is restricted | Setting pam_wheel to use_uid"
lineinfile:
state: present
dest: /etc/pam.d/su
regexp: '^(#)?auth\s+required\s+pam_wheel\.so'
line: 'auth required pam_wheel.so use_uid {% if rhel9cis_sugroup is defined %}group={{ rhel9cis_sugroup }}{% endif %}'
- name: "5.7 | L1 | PATCH | Ensure access to the su command is restricted | wheel group contains root"
user:
name: "{{ rhel9cis_sugroup_users }}"
groups: "{{ rhel9cis_sugroup | default('wheel') }}"
when:
- rhel9cis_rule_5_7
tags:
- level1-server
- level1-workstation
- patch
- rule_5.7

27
tasks/section_5/main.yml Normal file
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@ -0,0 +1,27 @@
---
- name: "SECTION | 5.1 | Configure time-based job schedulers"
include: cis_5.1.x.yml
- name: "SECTION | 5.2 | Configure SSH Server"
include: cis_5.2.x.yml
- name: "SECTION | 5.3 | Configure Profiles"
include: cis_5.3.x.yml
when:
- rhel9cis_use_authconfig
- name: "SECTION | 5.4 | Configure PAM "
include: cis_5.4.x.yml
- name: "SECTION | 5.5.1.x | Passwords and Accounts"
include: cis_5.5.1.x.yml
- name: "SECTION | 5.5.x | System Accounts and User Settings"
include: cis_5.5.x.yml
- name: "SECTION | 5.6 | Root Login"
include: cis_5.6.yml
- name: Section | 5.7 | su Command Restriction
include: cis_5.7.yml

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---
- name: "6.1.1 | L2 | AUDIT | Audit system file permissions"
block:
- name: "6.1.1 | L2 | AUDIT | Audit system file permissions | Audit the packages"
shell: rpm -Va --nomtime --nosize --nomd5 --nolinkto
args:
warn: no
changed_when: false
failed_when: false
register: rhel9cis_6_1_1_packages_rpm
- name: "6.1.1 | L2 | AUDIT | Audit system file permissions | Create list and warning"
block:
- name: "6.1.1 | L2 | Audit system file permissions | Add file discrepancy list to system"
copy:
dest: "{{ rhel9cis_rpm_audit_file }}"
content: "{{ rhel9cis_6_1_1_packages_rpm.stdout }}"
- name: "6.1.1 | L2 | AUDIT | Audit system file permissions | Message out alert for package descrepancies"
debug:
msg: |
"Warning! You have some package descrepancies issues.
The file list can be found in {{ rhel9cis_rpm_audit_file }}"
when: rhel9cis_6_1_1_packages_rpm.stdout|length > 0
- name: "6.1.1 | L2 | AUDIT | Audit system file permissions | Message out no package descrepancies"
debug:
msg: "Good News! There are no package descrepancies"
when: rhel9cis_6_1_1_packages_rpm.stdout|length == 0
when:
- rhel9cis_rule_6_1_1
tags:
- level2-server
- level2-workstation
- audit
- rule_6.1.1
- name: "6.1.2 | L1 | PATCH | Ensure permissions on /etc/passwd are configured"
file:
dest: /etc/passwd
owner: root
group: root
mode: 0644
when:
- rhel9cis_rule_6_1_2
tags:
- level1-server
- level1-workstation
- patch
- rule_6.1.2
- name: "6.1.3 | L1 | PATCH | Ensure permissions on /etc/passwd- are configured"
file:
dest: /etc/passwd-
owner: root
group: root
mode: 0644
when:
- rhel9cis_rule_6_1_3
tags:
- level1-server
- level1-workstation
- patch
- rule_6.1.3
- name: "6.1.4 | L1 | PATCH | Ensure permissions on /etc/shadow are configured"
file:
dest: /etc/shadow
owner: root
group: root
mode: 0000
when:
- rhel9cis_rule_6_1_4
tags:
- level1-server
- level1-workstation
- patch
- rule_6.1.4
- name: "6.1.5 | L1 | PATCH | Ensure permissions on /etc/shadow- are configured"
file:
dest: /etc/shadow-
owner: root
group: root
mode: 0000
when:
- rhel9cis_rule_6_1_5
tags:
- level1-server
- level1-workstation
- patch
- rule_6.1.5
- name: "6.1.6 | L1 | PATCH | Ensure permissions on /etc/gshadow are configured"
file:
dest: /etc/gshadow
owner: root
group: root
mode: 0000
when:
- rhel9cis_rule_6_1_6
tags:
- level1-server
- level1-workstation
- patch
- rule_6.1.6
- name: "6.1.7 | L1 | PATCH | Ensure permissions on /etc/gshadow- are configured"
file:
dest: /etc/gshadow-
owner: root
group: root
mode: 0000
when:
- rhel9cis_rule_6_1_7
tags:
- level1-server
- level1-workstation
- patch
- rule_6.1.7
- name: "6.1.8 | L1 | PATCH | Ensure permissions on /etc/group are configured"
file:
dest: /etc/group-
owner: root
group: root
mode: 0644
when:
- rhel9cis_rule_6_1_8
tags:
- level1-server
- level1-workstation
- patch
- rule_6.1.8
- name: "6.1.9 | L1 | PATCH | Ensure permissions on /etc/group- are configured"
file:
dest: /etc/group-
owner: root
group: root
mode: 0644
when:
- rhel9cis_rule_6_1_9
tags:
- level1-server
- level1-workstation
- patch
- rule_6.1.9
- name: "6.1.10 | L1 | PATCH | Ensure no world writable files exist"
block:
- name: "6.1.10 | L1 | AUDIT | Ensure no world writable files exist | Get list of world-writable files"
shell: df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -type f -perm -0002
failed_when: false
changed_when: false
register: rhel_09_6_1_10_perms_results
- name: "6.1.10 | L1 | AUDIT | Ensure no world writable files exist | Alert no world-writable files exist"
debug:
msg: "Good news! We have not found any world-writable files on your system"
when:
- rhel_09_6_1_10_perms_results.stdout is not defined
- name: "6.1.10 | L1 | PATCH | Ensure no world writable files exist | Adjust world-writable files if they exist (Configurable)"
file:
path: '{{ item }}'
mode: o-w
state: touch
with_items: "{{ rhel_09_6_1_10_perms_results.stdout_lines }}"
when:
- rhel_09_6_1_10_perms_results.stdout_lines is defined
- rhel9cis_no_world_write_adjust
when:
- rhel9cis_rule_6_1_10
tags:
- level1-server
- level1-workstation
- patch
- rule_6.1.10
- name: "6.1.11 | L1 | AUDIT | Ensure no unowned files or directories exist"
block:
- name: "6.1.11 | L1 | AUDIT | Ensure no unowned files or directories exist | Finding all unowned files or directories"
command: find "{{ item.mount }}" -xdev -nouser
check_mode: false
failed_when: false
changed_when: false
with_items: "{{ ansible_mounts }}"
register: rhel_09_6_1_11_audit
when: item['device'].startswith('/dev') and not 'bind' in item['options']
- name: "6.1.11 | L1 | AUDIT | Ensure no unowned files or directories exist | Displaying any unowned files or directories"
debug:
msg: "Manual intervention is required -- missing owner on items in {{ item.item.mount }}: {{ item.stdout_lines | join(', ') }}"
with_items: "{{ rhel_09_6_1_11_audit.results }}"
when:
- item.stdout_lines is defined
- item.stdout_lines | length > 0
when:
- rhel9cis_rule_6_1_11
tags:
- level1-server
- level1-workstation
- audit
- rule_6.1.11
- name: "6.1.12 | L1 | AUDIT | Ensure no ungrouped files or directories exist"
block:
- name: "6.1.12 | L1 | AUDIT | Ensure no ungrouped files or directories exist | Finding all ungrouped files or directories"
command: find "{{ item.mount }}" -xdev -nogroup
check_mode: false
failed_when: false
changed_when: false
register: rhel_09_6_1_12_audit
with_items: "{{ ansible_mounts }}"
when: item['device'].startswith('/dev') and not 'bind' in item['options']
- name: "6.1.12 | L1 | AUDIT | Ensure no ungrouped files or directories exist | Displaying all ungrouped files or directories"
debug:
msg: "Manual intervention is required -- missing group on items in {{ item.item.mount }}: {{ item.stdout_lines | join(', ') }}"
with_items: "{{ rhel_09_6_1_12_audit.results }}"
when:
- item.stdout_lines is defined
- item.stdout_lines | length > 0
when:
- rhel9cis_rule_6_1_12
tags:
- level1-server
- level1-workstation
- patch
- rule_6.1.12
- name: "6.1.13 | L1 | AUDIT | Audit SUID executables"
block:
- name: "6.1.13 | L1 | AUDIT | Audit SUID executables | Find all SUID executables"
shell: df {{ item.mount }} -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -type f -perm -4000
failed_when: false
changed_when: false
register: rhel_09_6_1_13_perms_results
with_items: "{{ ansible_mounts }}"
- name: "6.1.13 | L1 | AUDIT | Audit SUID executables | Alert no SUID executables exist"
debug:
msg: "Good news! We have not found any SUID executable files on your system"
failed_when: false
changed_when: false
when:
- rhel_09_6_1_13_perms_results.stdout is not defined
- name: "6.1.13 | L1 | AUDIT | Audit SUID executables | Alert SUID executables exist"
debug:
msg: "Manual intervention is required -- SUID set on items in {{ item.item.mount }}: {{ item.stout_lines | join(', ') }}"
with_items: "{{ rhel_09_6_1_13_perms_results.stdout_lines }}"
when:
- rhel_09_6_1_13_perms_results.stdout is defined
when:
- rhel9cis_rule_6_1_13
tags:
- level1-server
- level1-workstation
- audit
- rule_6.1.13
- name: "6.1.14 | L1 | AUDIT | Audit SGID executables"
block:
- name: "6.1.14 | L1 | AUDIT | Audit SGID executables | Find all SGID executables"
shell: df {{ item.mount }} -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -type f -perm -2000
failed_when: false
changed_when: false
register: rhel_09_6_1_14_perms_results
with_items: "{{ ansible_mounts }}"
- name: "6.1.14 | L1 | AUDIT | Audit SGID executables | Alert no SGID executables exist"
debug:
msg: "Good news! We have not found any SGID executable files on your system"
failed_when: false
changed_when: false
when:
- rhel_09_6_1_14_perms_results.stdout is not defined
- name: "6.1.14 | L1 | AUDIT | Audit SGID executables | Alert SGID executables exist"
debug:
msg: "Manual intervention is required -- SGID set on items in {{ item.item.mount }}: {{ item.stout_lines | join(', ') }}"
with_items: "{{ rhel_09_6_1_14_perms_results.stdout_lines }}"
when:
- rhel_09_6_1_14_perms_results.stdout is defined
when:
- rhel9cis_rule_6_1_14
tags:
- level1-server
- level1-workstation
- patch
- rule_6.1.14

View file

@ -0,0 +1,519 @@
---
- name: "6.2.1 | L1 | AUDIT | Ensure password fields are not empty"
command: passwd -l {{ item }}
changed_when: false
failed_when: false
with_items: "{{ empty_password_accounts.stdout_lines }}"
when:
- empty_password_accounts.rc
- rhel9cis_rule_6_2_1
tags:
- level1-server
- level1-workstation
- patch
- rule_6.2.1
- name: "6.2.2 | L1 | PATCH | Ensure no legacy '+' entries exist in /etc/passwd"
command: sed -i '/^+/ d' /etc/passwd
changed_when: false
failed_when: false
when:
- rhel9cis_rule_6_2_2
tags:
- level1-server
- level1-workstation
- patch
- rule_6.2.2
- skip_ansible_lint
- name: "6.2.3 | L1 | PATCH | Ensure root PATH Integrity"
block:
- name: "6.2.3 | L1 | AUDIT | Ensure root PATH Integrity | Determine empty value"
shell: 'echo $PATH | grep ::'
check_mode: no
register: path_colon
changed_when: False
failed_when: path_colon.rc == 0
- name: "6.2.3 | L1 | AUDIT | Ensure root PATH Integrity | Determin colon end"
shell: 'echo $PATH | grep :$'
check_mode: no
register: path_colon_end
changed_when: False
failed_when: path_colon_end.rc == 0
- name: "6.2.3 | L1 | AUDIT | Ensure root PATH Integrity | Determine dot in path"
shell: "/bin/bash --login -c 'env | grep ^PATH=' | sed -e 's/PATH=//' -e 's/::/:/' -e 's/:$//' -e 's/:/\\n/g'"
check_mode: no
register: dot_in_path
changed_when: False
failed_when: '"." in dot_in_path.stdout_lines'
- name: "6.2.3 | L1 | AUDIT | Ensure root PATH Integrity | Alert on empty value, colon end, and dot in path"
debug:
msg:
- "The following paths have an empty value: {{ path_colon.stdout_lines }}"
- "The following paths have colon end: {{ path_colon_end.stdout_lines }}"
- "The following paths have a dot in the path: {{ dot_in_path.stdout_lines }}"
- name: "6.2.3 | L1 | PATCH | Ensure root PATH Integrity (Scored) | Determine rights and owner"
file: >
path='{{ item }}'
follow=yes
state=directory
owner=root
mode='o-w,g-w'
with_items: "{{ dot_in_path.stdout_lines }}"
when:
- rhel9cis_rule_6_2_3
tags:
- level1-server
- level1-workstation
- patch
- rule_6.2.3
- name: "6.2.4 | L1 | PATCH | Ensure no legacy '+' entries exist in /etc/shadow"
command: sed -i '/^+/ d' /etc/shadow
changed_when: false
failed_when: false
when:
- rhel9cis_rule_6_2_4
tags:
- level1-server
- level1-workstation
- patch
- rule_6.2.4
- skip_ansible_lint
- name: "6.2.5 | L1 | PATCH | Ensure no legacy '+' entries exist in /etc/group"
command: sed -i '/^+/ d' /etc/group
changed_when: false
failed_when: false
when:
- rhel9cis_rule_6_2_5
tags:
- level1-server
- level1-workstation
- patch
- rule_6.2.5
- skip_ansible_lint
- name: "6.2.6 | L1 | PATCH | Ensure root is the only UID 0 account"
command: passwd -l {{ item }}
changed_when: false
failed_when: false
with_items: "{{ uid_zero_accounts_except_root.stdout_lines }}"
when:
- uid_zero_accounts_except_root.rc
- rhel9cis_rule_6_2_6
tags:
- level1-server
- level1-workstation
- patch
- rule_6.2.6
- name: "6.2.7 | L1 | PATCH | Ensure users' home directories permissions are 750 or more restrictive"
block:
- name: "6.2.7 | L1 | AUDIT | Ensure users' home directories permissions are 750 or more restrictive"
stat:
path: "{{ item }}"
with_items: "{{ rhel9cis_passwd | selectattr('uid', '>=', rhel9cis_int_gid) | selectattr('uid', '!=', 65534) | map(attribute='dir') | list }}"
register: rhel_09_6_2_7_audit
- name: "6.2.7 | L1 | AUDIT | Ensure users' home directories permissions are 750 or more restrictive"
command: find -H {{ item.0 | quote }} -not -type l -perm /027
check_mode: false
changed_when: rhel_09_6_2_7_patch_audit.stdout | length > 0
register: rhel_09_6_2_7_patch_audit
when:
- ansible_check_mode
- item.1.exists
with_together:
- "{{ rhel_09_6_2_7_audit.results | map(attribute='item') | list }}"
- "{{ rhel_09_6_2_7_audit.results | map(attribute='stat') | list }}"
loop_control:
label: "{{ item.0 }}"
- name: "6.2.7 | L1 | PATCH | Ensure users' home directories permissions are 750 or more restrictive"
file:
path: "{{ item.0 }}"
recurse: yes
mode: a-st,g-w,o-rwx
register: rhel_09_6_2_7_patch
when:
- not ansible_check_mode
- item.1.exists
with_together:
- "{{ rhel_09_6_2_7_audit.results | map(attribute='item') | list }}"
- "{{ rhel_09_6_2_7_audit.results | map(attribute='stat') | list }}"
loop_control:
label: "{{ item.0 }}"
# set default ACLs so the homedir has an effective umask of 0027
- name: "6.2.7 | L1 | PATCH | Ensure users' home directories permissions are 750 or more restrictive"
acl:
path: "{{ item.0 }}"
default: yes
state: present
recursive: yes
etype: "{{ item.1.etype }}"
permissions: "{{ item.1.mode }}"
when: not rhel9cis_system_is_container
with_nested:
- "{{ (ansible_check_mode | ternary(rhel_09_6_2_7_patch_audit, rhel_09_6_2_7_patch)).results |
rejectattr('skipped', 'defined') | map(attribute='item') | map('first') | list }}"
-
- etype: group
mode: rx
- etype: other
mode: '0'
when:
- rhel9cis_rule_6_2_7
tags:
- level1-server
- level1-workstation
- patch
- rule_6.2.7
- name: "6.2.8 | L1 | PATCH | Ensure users own their home directories"
file:
path: "{{ item.dir }}"
owner: "{{ item.id }}"
state: directory
with_items: "{{ rhel9cis_passwd }}"
loop_control:
label: "{{ rhel9cis_passwd_label }}"
when:
- item.uid >= rhel9cis_int_gid
- rhel9cis_rule_6_2_8
tags:
- skip_ansible_lint # settings found on 6_2_7
- level1-server
- level1-workstation
- patch
- rule_6.2.8
- name: "6.2.9 | L1 | PATCH | Ensure users' dot files are not group or world-writable"
block:
- name: "6.2.9 | L1 | AUDIT | Ensure users' dot files are not group or world-writable | Check for files"
shell: find /home/ -name "\.*" -perm /g+w,o+w
changed_when: false
failed_when: false
register: rhel9cis_6_2_9_audit
- name: "6.2.9 | L1 | AUDIT | Ensure users' dot files are not group or world-writable | Alert on files found"
debug:
msg: "Good news! We have not found any group or world-writable dot files on your sytem"
when:
- rhel9cis_6_2_9_audit.stdout is not defined
- name: "6.2.9 | L1 | PATCH | Ensure users' dot files are not group or world-writable | Changes files if configured"
file:
path: '{{ item }}'
mode: go-w
with_items: "{{ rhel9cis_6_2_9_audit.stdout_lines }}"
when:
- rhel9cis_6_2_9_audit.stdout is defined
- rhel9cis_dotperm_ansiblemanaged
when:
- rhel9cis_rule_6_2_9
tags:
- level1-server
- level1-workstation
- patch
- rule_6.2.9
- name: "6.2.10 | L1 | PATCH | Ensure no users have .forward files"
file:
state: absent
dest: "~{{ item }}/.forward"
with_items: "{{ users.stdout_lines }}"
when:
- rhel9cis_rule_6_2_10
tags:
- level1-server
- level1-workstation
- patch
- rule_6.2.10
- name: "6.2.11 | L1 | PATCH | Ensure no users have .netrc files"
file:
state: absent
dest: "~{{ item }}/.netrc"
with_items: "{{ users.stdout_lines }}"
when:
- rhel9cis_rule_6_2_11
tags:
- level1-server
- level1-workstation
- patch
- rule_6.2.11
- name: "6.2.12 | L1 | PATCH | Ensure users' .netrc Files are not group or world accessible"
command: /bin/true
changed_when: false
failed_when: false
when:
- rhel9cis_rule_6_2_12
tags:
- level1-server
- level1-workstation
- patch
- rule_6.2.12
- name: "6.2.13 | L1 | PATCH | Ensure no users have .rhosts files"
file:
state: absent
dest: "~{{ item }}/.rhosts"
with_items: "{{ users.stdout_lines }}"
when:
- rhel9cis_rule_6_2_13
tags:
- level1-server
- level1-workstation
- patch
- rule_6.2.13
- name: "6.2.14 | L1 | AUDIT | Ensure all groups in /etc/passwd exist in /etc/group"
block:
- name: "6.2.14 | L1 | AUDIT | Ensure all groups in /etc/passwd exist in /etc/group | Check /etc/passwd entries"
shell: pwck -r | grep 'no group' | awk '{ gsub("[:\47]",""); print $2}'
changed_when: false
failed_when: false
check_mode: false
register: passwd_gid_check
- name: "6.2.14 | L1 | AUDIT | Ensure all groups in /etc/passwd exist in /etc/group | Print message that all groups match between passwd and group files"
debug:
msg: "Good News! There are no users that have non-existent GUIDs (Groups)"
when: passwd_gid_check.stdout is not defined
- name: "6.2.14 | L1 | AUDIT | Ensure all groups in /etc/passwd exist in /etc/group | Print warning about users with invalid GIDs missing GID entries in /etc/group"
debug:
msg: "WARNING: The following users have non-existent GIDs (Groups): {{ passwd_gid_check.stdout_lines | join (', ') }}"
when: passwd_gid_check.stdout is defined
when:
- rhel9cis_rule_6_2_14
tags:
- level1-server
- level1-workstation
- audit
- rule_6.2.14
- name: "6.2.15 | L1 | AUDIT Ensure no duplicate UIDs exist"
block:
- name: "6.2.15 | L1 | AUDIT | Ensure no duplicate UIDs exist | Check for duplicate UIDs"
shell: "pwck -r | awk -F: '{if ($3 in uid) print $1 ; else uid[$3]}' /etc/passwd"
changed_when: false
failed_when: false
register: user_uid_check
- name: "6.2.15 | L1 | AUDIT | Ensure no duplicate UIDs exist | Print message that no duplicate UIDs exist"
debug:
msg: "Good News! There are no duplicate UID's in the system"
when: user_uid_check.stdout is not defined
- name: "6.2.15 | L1 | AUDIT| Ensure no duplicate UIDs exist | Print warning about users with duplicate UIDs"
debug:
msg: "Warning: The following users have UIDs that are duplicates: {{ user_uid_check.stdout_lines }}"
when: user_uid_check.stdout is defined
when:
- rhel9cis_rule_6_2_15
tags:
- level1-server
- level1-workstation
- patch
- rule_6.2.15
- name: "6.2.16 | L1 | AUDIT | Ensure no duplicate GIDs exist"
block:
- name: "6.2.16 | L1 | AUDIT | Ensure no duplicate GIDs exist | Check for duplicate GIDs"
shell: "pwck -r | awk -F: '{if ($3 in users) print $1 ; else users[$3]}' /etc/group"
changed_when: false
failed_when: false
register: user_user_check
- name: "6.2.16 | L1 | AUDIT | Ensure no duplicate GIDs exist | Print message that no duplicate GID's exist"
debug:
msg: "Good News! There are no duplicate GIDs in the system"
when: user_user_check.stdout is not defined
- name: "6.2.16 | L1 | AUDIT | Ensure no duplicate GIDs exist | Print warning about users with duplicate GIDs"
debug:
msg: "Warning: The following groups have duplicate GIDs: {{ user_user_check.stdout_lines }}"
when: user_user_check.stdout is defined
when:
- rhel9cis_rule_6_2_16
tags:
- level1-server
- level1-workstation
- audit
- rule_6.2.16
- name: "6.2.17 | L1 | AUDIT | Ensure no duplicate user names exist"
block:
- name: "6.2.17 | L1 | AUDIT | Ensure no duplicate user names exist | Check for duplicate User Names"
shell: "pwck -r | awk -F: '{if ($1 in users) print $1 ; else users[$1]}' /etc/passwd"
changed_when: false
failed_when: false
register: user_username_check
- name: "6.2.17 | L1 | AUDIT | Ensure no duplicate user names exist | Print message that no duplicate user names exist"
debug:
msg: "Good News! There are no duplicate user names in the system"
when: user_username_check.stdout is not defined
- name: "6.2.17 | L1 | AUDIT | Ensure no duplicate user names exist | Print warning about users with duplicate User Names"
debug:
msg: "Warning: The following user names are duplicates: {{ user_username_check.stdout_lines }}"
when: user_username_check.stdout is defined
when:
- rhel9cis_rule_6_2_17
tags:
- level1-server
- level1-workstation
- audit
- rule_6.2.17
- name: "6.2.18 | L1 | AUDIT |Ensure no duplicate group names exist"
block:
- name: "6.2.18 | L1 | AUDIT | Ensure no duplicate group names exist | Check for duplicate group names"
shell: 'getent passwd | cut -d: -f1 | sort -n | uniq -d'
changed_when: false
failed_when: false
check_mode: no
register: group_group_check
- name: "6.2.18 | L1 | AUDIT | Ensure no duplicate group names exist | Print message that no duplicate groups exist"
debug:
msg: "Good News! There are no duplicate group names in the system"
when: group_group_check.stdout is defined
- name: "6.2.18 | L1 | AUDIT | Ensure no duplicate group names exist | Print warning about users with duplicate group names"
debug:
msg: "Warning: The following group names are duplicates: {{ group_group_check.stdout_lines }}"
when: group_group_check.stdout is not defined
when:
- rhel9cis_rule_6_2_18
tags:
- level1-server
- level1-workstation
- audit
- rule_6.2.18
- name: "6.2.19 | L1 | AUDIT | Ensure shadow group is empty"
block:
- name: "6.2.19 | L1 | AUDIT | Ensure shadow group is empty | Check for shadow group and pull group id"
shell: "getent group shadow | cut -d: -f3"
changed_when: false
failed_when: false
check_mode: no
register: rhel9cis_shadow_gid
- name: "6.2.19 | L1 | AUDIT | Ensure shadow group is empty | Check /etc/group for empty shadow group"
shell: grep ^shadow:[^:]*:[^:]*:[^:]+ /etc/group
changed_when: false
failed_when: false
check_mode: no
register: rhel9cis_empty_shadow
- name: "6.2.19 | L1 | AUDIT | Ensure shadow group is empty | Check for users assigned to shadow"
shell: "getent passwd | awk -F: '$4 == '{{ rhel9cis_shadow_gid.stdout }}' {print $1}'"
changed_when: false
failed_when: false
check_mode: no
register: rhel9cis_shadow_passwd
- name: "6.2.19 | L1 | AUDIT | Ensure shadow group is empty | Alert shadow group is empty and no users assigned"
debug:
msg:
- " Good News! The shadow group is empty and there are no users assigned to shadow"
when:
- rhel9cis_empty_shadow.stdout | length == 0
- rhel9cis_shadow_passwd.stdout | length == 0
- name: "6.2.19 | L1 | AUDIT | Ensure shadow group is empty | Alert shadow group is not empty"
debug:
msg:
- "Alert! The shadow group is not empty"
when:
- rhel9cis_empty_shadow.stdout | length > 0
- name: "6.2.19 | L1 | AUDIT | Ensure shadow group is empty | Alert users are using shadow group"
debug:
msg:
- "Alert! The following users are assigned to the shadow group, please assing them to the appropriate group"
- "{{ rhel9cis_shadow_passwd.stdout_lines }}"
when:
- rhel9cis_shadow_passwd.stdout | length > 0
when:
- rhel9cis_rule_6_2_19
tags:
- level1-server
- level1-workstation
- audit
- rule_6.2.19
- name: "6.2.20 | L1 | PATCH | Ensure all users' home directories exist"
block:
- name: "6.2.20 | L1 | AUDIT | Ensure all users' home directories exist"
stat:
path: "{{ item }}"
register: rhel_09_6_2_20_audit
with_items: "{{ rhel9cis_passwd | selectattr('uid', '>=', rhel9cis_int_gid) | selectattr('uid', '!=', 65534) | map(attribute='dir') | list }}"
- name: "6.2.20 | L1 | AUDIT | Ensure all users' home directories exist"
command: find -H {{ item.0 | quote }} -not -type l -perm /027
check_mode: false
changed_when: rhel_09_6_2_20_patch_audit.stdout | length > 0
register: rhel_09_6_2_20_patch_audit
when:
- ansible_check_mode
- item.1.exists
with_together:
- "{{ rhel_09_6_2_20_audit.results | map(attribute='item') | list }}"
- "{{ rhel_09_6_2_20_audit.results | map(attribute='stat') | list }}"
loop_control:
label: "{{ item.0 }}"
- name: "6.2.20 | L1 | PATCH | Ensure all users' home directories exist"
file:
path: "{{ item.0 }}"
recurse: yes
mode: a-st,g-w,o-rwx
register: rhel_09_6_2_20_patch
when:
- not ansible_check_mode
- item.1.exists
with_together:
- "{{ rhel_09_6_2_20_audit.results | map(attribute='item') | list }}"
- "{{ rhel_09_6_2_20_audit.results | map(attribute='stat') | list }}"
loop_control:
label: "{{ item.0 }}"
# set default ACLs so the homedir has an effective umask of 0027
- name: "6.2.20 | L1 | PATCH | Ensure all users' home directories exist"
acl:
path: "{{ item.0 }}"
default: yes
state: present
recursive: yes
etype: "{{ item.1.etype }}"
permissions: "{{ item.1.mode }}"
when: not rhel9cis_system_is_container
with_nested:
- "{{ (ansible_check_mode | ternary(rhel_09_6_2_20_patch_audit, rhel_09_6_2_20_patch)).results |
rejectattr('skipped', 'defined') | map(attribute='item') | map('first') | list }}"
-
- etype: group
mode: rx
- etype: other
mode: '0'
when:
- rhel9cis_rule_6_2_20
tags:
- level1-server
- level1-workstation
- patch
- rule_6.2.20

7
tasks/section_6/main.yml Normal file
View file

@ -0,0 +1,7 @@
---
- name: "SECTION | 6.1 | System File Permissions"
include: cis_6.1.x.yml
- name: "SECTION | 6.2 | User and Group Settings"
include: cis_6.2.x.yml