ansible-lockdown/RHEL9-CIS
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Signed-off-by: Mark Bolwell <mark.bollyuk@gmail.com>
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Mark Bolwell 2024-12-11 11:49:02 +00:00
parent fcf9eb674f
commit 88ac5c3d65
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19 changed files with 127 additions and 84 deletions
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36
tasks/section_5/cis_5.3.2.x.yml
View file

@ -17,12 +17,13 @@
when:
- rhel9cis_authselect_custom_profile_name not in prelim_authselect_current_profile.stdout or
prelim_authselect_current_profile.stdout is not defined
ansible.builtin.shell: "/usr/bin/authselect create-profile {{ rhel9cis_authselect_custom_profile_name }} -b {{ rhel9cis_authselect_default_profile_to_copy }}"
ansible.builtin.command: "/usr/bin/authselect create-profile {{ rhel9cis_authselect_custom_profile_name }} -b {{ rhel9cis_authselect_default_profile_to_copy }}"
changed_when: false
args:
creates: "/etc/authselect/custom/{{ rhel9cis_authselect_custom_profile_name }}"
- name: "5.3.2.1 | AUDIT | Ensure active authselect profile includes pam modules | get profile features"
ansible.builtin.shell: "/usr/bin/authselect list-features custom/{{ rhel9cis_authselect_custom_profile_name }}"
ansible.builtin.command: "/usr/bin/authselect list-features custom/{{ rhel9cis_authselect_custom_profile_name }}"
changed_when: false
register: discovered_authselect_profile_features
@ -37,7 +38,8 @@
- password
- name: "5.3.2.1 | PATCH | Ensure active authselect profile includes pam modules | Backup and Add pam modules"
ansible.builtin.shell: "/usr/bin/authselect select custom/{{ rhel9cis_authselect_custom_profile_name }}{% if rhel9cis_rule_5_3_2_2 %} with-faillock{% endif %}{% if rhel9cis_rule_5_3_2_3 %} with-pwquality{% endif %}{% if rhel9cis_rule_5_3_2_4 %} with-pwhistory{% endif %}{% if rhel9cis_rule_5_3_3_4_1 %} without-nullok{% endif %} --force --backup=rhel9cis-preremediate-{{ lookup('pipe', 'date +%Y-%m-%d-%H%M') }}"
ansible.builtin.command: "/usr/bin/authselect select custom/{{ rhel9cis_authselect_custom_profile_name }}{% if rhel9cis_rule_5_3_2_2 %} with-faillock{% endif %}{% if rhel9cis_rule_5_3_2_3 %} with-pwquality{% endif %}{% if rhel9cis_rule_5_3_2_4 %} with-pwhistory{% endif %}{% if rhel9cis_rule_5_3_3_4_1 %} without-nullok{% endif %} --force --backup=rhel9cis-preremediate-{{ lookup('pipe', 'date +%Y-%m-%d-%H%M') }}"
changed_when: true
- name: "5.3.2.2 | PATCH | Ensure pam_faillock module is enabled"
when:
@ -59,14 +61,16 @@
notify: Authselect update
block:
- name: "5.3.2.2 | AUDIT | Ensure pam_faillock module is enabled | Get current config"
ansible.builtin.shell: authselect current | grep faillock
ansible.builtin.shell: |
authselect current | grep faillock
changed_when: false
failed_when: discovered_authselect_current_faillock.rc not in [ 0, 1 ]
register: discovered_authselect_current_faillock
- name: "5.3.2.2 | AUDIT | Ensure pam_faillock module is enabled | Add feature if missing"
when: discovered_authselect_current_faillock.rc != 0
ansible.builtin.shell: "/usr/bin/authselect select custom/{{ rhel9cis_authselect_custom_profile_name }}{% if rhel9cis_rule_5_3_2_2 %} with-faillock{% endif %}{% if rhel9cis_rule_5_3_2_3 %} with-pwquality{% endif %}{% if rhel9cis_rule_5_3_2_4 %} with-pwhistory{% endif %}{% if rhel9cis_rule_5_3_3_4_1 %} without-nullok{% endif %}"
ansible.builtin.command: "/usr/bin/authselect select custom/{{ rhel9cis_authselect_custom_profile_name }}{% if rhel9cis_rule_5_3_2_2 %} with-faillock{% endif %}{% if rhel9cis_rule_5_3_2_3 %} with-pwquality{% endif %}{% if rhel9cis_rule_5_3_2_4 %} with-pwhistory{% endif %}{% if rhel9cis_rule_5_3_3_4_1 %} without-nullok{% endif %}"
changed_when: true
- name: "5.3.2.3 | PATCH | Ensure pam_pwquality module is enabled"
when:
@ -83,14 +87,16 @@
- rule_5.3.2.3
block:
- name: "5.3.2.3 | AUDIT | Ensure pam_pwquality module is enabled | Get current config"
ansible.builtin.shell: authselect current | grep quality
ansible.builtin.shell: |
authselect current | grep quality
changed_when: false
failed_when: discovered_authselect_current_quality.rc not in [ 0, 1 ]
register: discovered_authselect_current_quality
- name: "5.3.2.3 | AUDIT | Ensure pam_pwquality module is enabled | Add feature if missing"
- name: "5.3.2.3 | PATCH | Ensure pam_pwquality module is enabled | Add feature if missing"
when: discovered_authselect_current_quality.rc != 0
ansible.builtin.shell: "/usr/bin/authselect select custom/{{ rhel9cis_authselect_custom_profile_name }}{% if rhel9cis_rule_5_3_2_2 %} with-faillock{% endif %}{% if rhel9cis_rule_5_3_2_3 %} with-pwquality{% endif %}{% if rhel9cis_rule_5_3_2_4 %} with-pwhistory{% endif %}{% if rhel9cis_rule_5_3_3_4_1 %} without-nullok{% endif %}"
ansible.builtin.command: "/usr/bin/authselect select custom/{{ rhel9cis_authselect_custom_profile_name }}{% if rhel9cis_rule_5_3_2_2 %} with-faillock{% endif %}{% if rhel9cis_rule_5_3_2_3 %} with-pwquality{% endif %}{% if rhel9cis_rule_5_3_2_4 %} with-pwhistory{% endif %}{% if rhel9cis_rule_5_3_3_4_1 %} without-nullok{% endif %}"
changed_when: true
notify: Authselect update
- name: "5.3.2.4 | PATCH | Ensure pam_pwhistory module is enabled"
@ -108,14 +114,16 @@
- rule_5.3.2.4
block:
- name: "5.3.2.4 | AUDIT | Ensure pam_pwhistory module is enabled | Get current config"
ansible.builtin.shell: authselect current | grep pwhistory
ansible.builtin.shell: |
authselect current | grep pwhistory
changed_when: false
failed_when: discovered_authselect_current_history.rc not in [ 0, 1 ]
register: discovered_authselect_current_history
- name: "5.3.2.4 | PATCH | Ensure pam_pwhistory module is enabled | enable feature"
when: discovered_authselect_current_history.rc != 0
ansible.builtin.shell: "/usr/bin/authselect select custom/{{ rhel9cis_authselect_custom_profile_name }}{% if rhel9cis_rule_5_3_2_2 %} with-faillock{% endif %}{% if rhel9cis_rule_5_3_2_3 %} with-pwquality{% endif %}{% if rhel9cis_rule_5_3_2_4 %} with-pwhistory{% endif %}{% if rhel9cis_rule_5_3_3_4_1 %} without-nullok{% endif %}"
ansible.builtin.command: "/usr/bin/authselect select custom/{{ rhel9cis_authselect_custom_profile_name }}{% if rhel9cis_rule_5_3_2_2 %} with-faillock{% endif %}{% if rhel9cis_rule_5_3_2_3 %} with-pwquality{% endif %}{% if rhel9cis_rule_5_3_2_4 %} with-pwhistory{% endif %}{% if rhel9cis_rule_5_3_3_4_1 %} without-nullok{% endif %}"
changed_when: true
notify: Authselect update
- name: "5.3.2.5 | PATCH | Ensure pam_unix module is enabled"
@ -146,8 +154,8 @@
regexp: "{{ item.regexp }}"
line: "{{ item.line }}"
backrefs: true
insertafter: "{{ item.after | default (omit) }}"
insertbefore: "{{ item.before | default (omit) }}"
insertafter: "{{ item.after | default(omit) }}"
insertbefore: "{{ item.before | default(omit) }}"
loop:
- { regexp: '^(auth\s+)sufficient(\s+pam_unix.so.*)(.*)', line: '\1sufficient\2\3', after: '^auth.*pam_faillock.*preauth' }
- { regexp: '^(password\s+)sufficient(\s+pam_unix.so.*)(.*)', line: '\1sufficient\2\3', before: '^password.*pam_deny.so' }
@ -160,8 +168,8 @@
line: "{{ item.line }}"
regexp: "{{ item.regexp }}"
backrefs: true
insertafter: "{{ item.after | default (omit) }}"
insertbefore: "{{ item.before | default (omit) }}"
insertafter: "{{ item.after | default(omit) }}"
insertbefore: "{{ item.before | default(omit) }}"
loop:
- { regexp: '^(auth\s+)sufficient(\s+pam_unix.so.*)(.*)', line: '\1sufficient\2\2', after: '^auth.*pam_faillock.*preauth' }
- { regexp: '^(password\s+)sufficient(\s+pam_unix.so.*)(.*)', line: '\1sufficient\2\3', before: '^password.*pam_deny.so' }

1
tasks/section_5/cis_5.3.3.1.x.yml
View file

@ -104,6 +104,7 @@
line: "{{ rhel9cis_pamroot_lock_option }}"
insertafter: '^# end of pam-auth-update config'
create: true
mode: 'u-x,go-wx'
- name: "5.3.3.1.3 | PATCH | Ensure password failed attempts lockout includes root account | remove lockout from pam files NOT AuthSelect"
when:

28
tasks/section_5/cis_5.4.1.x.yml
View file

@ -96,7 +96,8 @@
- discovered_warn_days.stdout_lines | length > 0
- item in prelim_interactive_usernames.stdout
- rhel9cis_force_user_warnage
ansible.builtin.shell: "chage --warndays {{ rhel9cis_pass['warn_age'] }} {{ item }}"
ansible.builtin.command: "chage --warndays {{ rhel9cis_pass['warn_age'] }} {{ item }}"
changed_when: true
loop: "{{ discovered_warn_days.stdout_lines }}"
- name: "5.4.1.4 | PATCH | Ensure strong password hashing algorithm is configured"
@ -125,25 +126,29 @@
- rule_5.4.1.5
block:
- name: "5.4.1.5 | AUDIT | Ensure inactive password lock is configured | Check current settings"
ansible.builtin.shell: useradd -D | grep INACTIVE={{ rhel9cis_inactivelock.lock_days }} | cut -f2 -d=
ansible.builtin.shell: |
useradd -D | grep INACTIVE={{ rhel9cis_inactivelock.lock_days }} | cut -f2 -d=
changed_when: false
failed_when: false
check_mode: false
register: discovered_passwdlck_inactive_settings
- name: "5.4.1.5 | PATCH | Ensure inactive password lock is configured | Set default inactive setting"
ansible.builtin.shell: useradd -D -f {{ rhel9cis_inactivelock.lock_days }}
when: discovered_passwdlck_inactive_settings.stdout | length == 0
ansible.builtin.command: useradd -D -f {{ rhel9cis_inactivelock.lock_days }}
changed_when: true
- name: "5.4.1.5 | AUDIT | Ensure inactive password lock is 30 days or less | Getting user list"
ansible.builtin.shell: "awk -F: '/^[^#:]+:[^\\!\\*:]*:[^:]*:[^:]*:[^:]*:[^:]*:(\\s*|-1|3[1-9]|[4-9][0-9]|[1-9][0-9][0-9]+):[^:]*:[^:]*\\s*$/ {print $1}' /etc/shadow"
ansible.builtin.shell: |
"awk -F: '/^[^#:]+:[^\\!\\*:]*:[^:]*:[^:]*:[^:]*:[^:]*:(\\s*|-1|3[1-9]|[4-9][0-9]|[1-9][0-9][0-9]+):[^:]*:[^:]*\\s*$/ {print $1}' /etc/shadow"
changed_when: false
check_mode: false
register: discovered_passwdlck_user_list
- name: "5.4.1.5 | PATCH | Ensure inactive password lock is 30 days or less | Apply Inactive setting to existing accounts"
when: item in prelim_interactive_usernames.stdout
ansible.builtin.shell: chage --inactive {{ rhel9cis_inactivelock.lock_days }} "{{ item }}"
ansible.builtin.command: chage --inactive {{ rhel9cis_inactivelock.lock_days }} "{{ item }}"
changed_when: true
loop: "{{ discovered_passwdlck_user_list.stdout_lines }}"
- name: "5.4.1.6 | PATCH | Ensure all users last password change date is in the past"
@ -172,22 +177,23 @@
register: discovered_passwdlck_user_future
- name: "5.4.1.6 | AUDIT | Ensure all users last password change date is in the past | Alert on accounts with pw change in the future"
when:
- discovered_passwdlck_user_future.stdout | length > 0
- not rhel9cis_futurepwchgdate_autofix
ansible.builtin.debug:
msg: "Warning!! The following accounts have the last PW change date in the future: {{ discovered_passwdlck_user_future.stdout_lines }}"
when:
- discovered_passwdlck_user_future.stdout | length > 0
- not rhel9cis_futurepwchgdate_autofix
- name: "5.4.1.6 | AUDIT | Ensure all users last password change date is in the past | warning count"
ansible.builtin.import_tasks:
file: warning_facts.yml
when:
- discovered_passwdlck_user_future.stdout | length > 0
- not rhel9cis_futurepwchgdate_autofix
ansible.builtin.import_tasks:
file: warning_facts.yml
- name: "5.4.1.6 | PATCH | Ensure all users last password change date is in the past | Fix accounts with pw change in the future"
ansible.builtin.shell: passwd --expire {{ item }}
changed_when: true
when:
- discovered_passwdlck_user_future.stdout | length > 0
- rhel9cis_futurepwchgdate_autofix
loop: "{{ discovered_passwdlck_user_future.stdout_lines }}"
ansible.builtin.command: passwd --expire {{ item }}

3
tasks/section_5/cis_5.4.2.x.yml
View file

@ -17,7 +17,7 @@
- NIST800-53R5_CM-6
- NIST800-53R5_CM-7
- NIST800-53R5_IA-5
ansible.builtin.shell: passwd -l {{ item }}
ansible.builtin.command: passwd -l {{ item }}
changed_when: false
failed_when: false
loop: "{{ prelim_uid_zero_accounts_except_root.stdout_lines }}"
@ -194,6 +194,7 @@
regexp: \s*umask
line: "umask {{ rhel9cis_root_umask }}"
create: true
mode: 'u+x,go-rwx'
- name: "5.4.2.7 | PATCH | Ensure system accounts do not have a valid login shell"
when: