RHEL9-CIS/tasks/section_6/cis_6.2.x.yml

---

- name: "6.2.1 | AUDIT | Ensure accounts in /etc/passwd use shadowed passwords"
  block:
      - name: "6.2.1 | AUDIT | Ensure accounts in /etc/passwd use shadowed passwords | discover"
        ansible.builtin.shell: awk -F':' '($2 != "x" ) { print $1 " is not set to shadowed passwords "}' /etc/passwd
        register: shadow_passwd

      - name: "6.2.1 | AUDIT | Ensure accounts in /etc/passwd use shadowed passwords | Output"
        ansible.builtin.debug:
            msg: |
                - "Warning!! Below are the accounts that do not have shadowed passwords set"
                - "{{ shadow_passwd.stdout_line }}"
        when: shadow_passwd.stdout | length > 0

      - name: "6.2.1 | AUDIT | Ensure accounts in /etc/passwd use shadowed passwords | warning fact"
        ansible.builtin.import_tasks: warning_facts.yml
        vars:
            warn_control_id: '6.2.1'
        when: shadow_passwd.stdout | length >= 1

  when:
      - rhel9cis_rule_6_2_1
  tags:
      - level1-server
      - level1-workstation
      - patch
      - accounts
      - rule_6.2.1

- name: "6.2.2 | PATCH | Ensure password fields are not empty"
  ansible.builtin.shell: 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_2
  tags:
      - level1-server
      - level1-workstation
      - patch
      - accounts
      - rule_6.2.2

- name: "6.2.3 | AUDIT | Ensure all groups in /etc/passwd exist in /etc/group"
  block:
      - name: "6.2.3 | AUDIT | Ensure all groups in /etc/passwd exist in /etc/group | Check /etc/passwd entries"
        ansible.builtin.shell: pwck -r | grep 'no group' | awk '{ gsub("[:\47]",""); print $2}'
        changed_when: false
        failed_when: false
        check_mode: false
        register: rhel9cis_6_2_3_passwd_gid_check

      - name: "6.2.3 | AUDIT | Ensure all groups in /etc/passwd exist in /etc/group | Print message that all groups match between passwd and group files"
        ansible.builtin.debug:
            msg: "Good News! There are no users that have non-existent GUIDs (Groups)"
        when: rhel9cis_6_2_3_passwd_gid_check.stdout | length == 0

      - name: "6.2.3 | AUDIT | Ensure all groups in /etc/passwd exist in /etc/group | Print warning about users with invalid GIDs missing GID entries in /etc/group"
        ansible.builtin.debug:
            msg: "Warning!! The following users have non-existent GIDs (Groups): {{ rhel9cis_6_2_2_passwd_gid_check.stdout_lines | join (', ') }}"
        when: rhel9cis_6_2_3_passwd_gid_check.stdout | length >= 1

      - name: "6.2.3 | AUDIT | Ensure all groups in /etc/passwd exist in /etc/group | warning count"
        ansible.builtin.import_tasks: warning_facts.yml
        vars:
            warn_control_id: '6.2.3'
        when: rhel9cis_6_2_3_passwd_gid_check.stdout | length >= 1
  when:
      - rhel9cis_rule_6_2_2
  tags:
      - level1-server
      - level1-workstation
      - audit
      - accounts
      - groups
      - rule_6.2.2

- name: "6.2.4 | AUDIT Ensure no duplicate UIDs exist"
  block:
      - name: "6.2.4 | AUDIT | Ensure no duplicate UIDs exist | Check for duplicate UIDs"
        ansible.builtin.shell: "pwck -r | awk -F: '{if ($3 in uid) print $1 ; else uid[$3]}' /etc/passwd"
        changed_when: false
        failed_when: false
        register: rhel9cis_6_2_4_user_uid_check

      - name: "6.2.4 | AUDIT | Ensure no duplicate UIDs exist | Print warning about users with duplicate UIDs"
        ansible.builtin.debug:
            msg: "Warning!! The following users have UIDs that are duplicates: {{ rhel9cis_6_2_4_user_uid_check.stdout_lines }}"
        when: rhel9cis_6_2_4_user_uid_check.stdout | length >= 1

      - name: "6.2.4 | AUDIT| Ensure no duplicate UIDs exist | warning count"
        ansible.builtin.import_tasks: warning_facts.yml
        when: rhel9cis_6_2_4_user_uid_check.stdout | length >= 1
  vars:
      warn_control_id: '6.2.4'
  when:
      - rhel9cis_rule_6_2_4
  tags:
      - level1-server
      - level1-workstation
      - audit
      - accounts
      - users
      - rule_6.2.4

- name: "6.2.5 | AUDIT | Ensure no duplicate GIDs exist"
  block:
      - name: "6.2.5 | AUDIT | Ensure no duplicate GIDs exist | Check for duplicate GIDs"
        ansible.builtin.shell: "pwck -r | awk -F: '{if ($3 in users) print $1 ; else users[$3]}' /etc/group"
        changed_when: false
        failed_when: false
        register: rhel9cis_6_2_5_user_user_check

      - name: "6.2.5 | AUDIT | Ensure no duplicate GIDs exist | Print warning about users with duplicate GIDs"
        ansible.builtin.debug:
            msg: "Warning!! The following groups have duplicate GIDs: {{ rhel9cis_6_2_5_user_user_check.stdout_lines }}"
        when: rhel9cis_6_2_5_user_user_check.stdout | length >= 1

      - name: "6.2.5 | AUDIT | Ensure no duplicate GIDs exist | warning count"
        ansible.builtin.import_tasks: warning_facts.yml
        vars:
            warn_control_id: '6.2.5'
        when: rhel9cis_6_2_5_user_user_check.stdout_lines | length >= 1

  when:
      - rhel9cis_rule_6_2_5
  tags:
      - level1-server
      - level1-workstation
      - audit
      - accounts
      - groups
      - rule_6.2.5

- name: "6.2.6 | AUDIT | Ensure no duplicate user names exist"
  block:
      - name: "6.2.6 | AUDIT | Ensure no duplicate user names exist | Check for duplicate User Names"
        ansible.builtin.shell: "pwck -r | awk -F: '{if ($1 in users) print $1 ; else users[$1]}' /etc/passwd"
        changed_when: false
        failed_when: false
        register: rhel9cis_6_2_6_user_username_check

      - name: "6.2.6 | AUDIT | Ensure no duplicate user names exist | Print warning about users with duplicate User Names"
        ansible.builtin.debug:
            msg: "Warning!! The following user names are duplicates: {{ rhel9cis_6_2_5_user_username_check.stdout_lines }}"
        when: rhel9cis_6_2_6_user_username_check.stdout | length >= 1

      - name: "6.2.6 | AUDIT | Ensure no duplicate user names exist | warning count"
        ansible.builtin.import_tasks: warning_facts.yml
        vars:
            warn_control_id: '6.2.6'
        when: rhel9cis_6_2_6_user_username_check.stdout | length >= 1
  when:
      - rhel9cis_rule_6_2_6
  tags:
      - level1-server
      - level1-workstation
      - audit
      - accounts
      - users
      - rule_6.2.6

- name: "6.2.7 | AUDIT | Ensure no duplicate group names exist"
  block:
      - name: "6.2.7 | AUDIT | Ensure no duplicate group names exist | Check for duplicate group names"
        ansible.builtin.shell: 'getent passwd | cut -d: -f1 | sort -n | uniq -d'
        changed_when: false
        failed_when: false
        check_mode: false
        register: rhel9cis_6_2_7_group_group_check

      - name: "6.2.7 | AUDIT | Ensure no duplicate group names exist | Print warning about users with duplicate group names"
        ansible.builtin.debug:
            msg: "Warning!! The following group names are duplicates: {{ rhel9cis_6_2_7_group_group_check.stdout_lines }}"
        when: rhel9cis_6_2_7_group_group_check.stdout is not defined

      - name: "6.2.7 | AUDIT | Ensure no duplicate group names exist | warning count"
        ansible.builtin.import_tasks: warning_facts.yml
        vars:
            warn_control_id: '6.2.7'
        when: rhel9cis_6_2_7_group_group_check.stdout is not defined
  when:
      - rhel9cis_rule_6_2_7
  tags:
      - level1-server
      - level1-workstation
      - audit
      - accounts
      - groups
      - rule_6.2.7

- name: "6.2.8 | PATCH | Ensure root PATH Integrity"
  block:
      - name: "6.2.8 | AUDIT | Ensure root PATH Integrity | Determine empty value"
        ansible.builtin.shell: 'echo $PATH | grep ::'
        changed_when: false
        failed_when: rhel9cis_6_2_8_path_colon.rc == 0
        check_mode: false
        register: rhel9cis_6_2_8_path_colon

      - name: "6.2.8 | AUDIT | Ensure root PATH Integrity | Determin colon end"
        ansible.builtin.shell: 'echo $PATH | grep :$'
        changed_when: false
        failed_when: rhel9cis_6_2_8_path_colon_end.rc == 0
        check_mode: false
        register: rhel9cis_6_2_8_path_colon_end

      - name: "6.2.8 | AUDIT | Ensure root PATH Integrity | Determine dot in path"
        ansible.builtin.shell: "/bin/bash --login -c 'env | grep ^PATH=' | sed -e 's/PATH=//' -e 's/::/:/' -e 's/:$//' -e 's/:/\\n/g'"
        changed_when: false
        failed_when: '"." in rhel9cis_6_2_8_dot_in_path.stdout_lines'
        check_mode: false
        register: rhel9cis_6_2_8_dot_in_path

      - name: "6.2.8 | AUDIT | Ensure root PATH Integrity | Alert on empty value, colon end, and dot in path"
        ansible.builtin.debug:
            msg:
                - "Warning!!"
                - "The following paths have an empty value: {{ rhel9cis_6_2_8_path_colon.stdout_lines }}"
                - "The following paths have colon end: {{ rhel9cis_6_2_8_path_colon_end.stdout_lines }}"
                - "The following paths have a dot in the path: {{ rhel9cis_6_2_8_dot_in_path.stdout_lines }}"

      - name: "6.2.8 | PATCH | Ensure root PATH Integrity | Determine rights and owner"
        ansible.builtin.file: >
          path='{{ item }}'
          follow=yes
          state=directory
          owner=root
          mode='o-w,g-w'
        with_items: "{{ rhel9cis_6_2_8_dot_in_path.stdout_lines }}"
  when:
      - rhel9cis_rule_6_2_8
  tags:
      - level1-server
      - level1-workstation
      - patch
      - paths
      - rule_6.2.8

- name: "6.2.9 | PATCH | Ensure root is the only UID 0 account"
  ansible.builtin.shell: passwd -l {{ item }}
  changed_when: false
  failed_when: false
  with_items: "{{ rhel9cis_uid_zero_accounts_except_root.stdout_lines }}"
  when:
      - rhel9cis_uid_zero_accounts_except_root.rc
      - rhel9cis_rule_6_2_9
  tags:
      - level1-server
      - level1-workstation
      - patch
      - accounts
      - users
      - rule_6.2.9

- name: "6.2.10 | PATCH | Ensure local interactive user home directories exist"
  block:
      - name: "6.2.10 | AUDIT | Ensure local interactive user home directories exist"
        ansible.builtin.stat:
            path: "{{ item }}"
        register: rhel_08_6_2_10_audit
        with_items: "{{ rhel9cis_passwd | selectattr('uid', '>=', min_int_uid | int ) | selectattr('uid', '<=', max_int_uid | int ) | map(attribute='dir') | list }}"

      - name: "6.2.10 | AUDIT | Ensure local interactive user home directories exist"
        ansible.builtin.shell: find -H {{ item.0 | quote }} -not -type l -perm /027
        check_mode: false
        changed_when: rhel_08_6_2_10_patch_audit.stdout | length > 0
        register: rhel_08_6_2_10_patch_audit
        when:
            - ansible_check_mode
            - item.1.exists
        with_together:
            - "{{ rhel_08_6_2_10_audit.results | map(attribute='item') | list }}"
            - "{{ rhel_08_6_2_10_audit.results | map(attribute='stat') | list }}"
        loop_control:
            label: "{{ item.0 }}"

      - name: "6.2.10 | PATCH | Ensure local interactive user home directories exist"
        ansible.builtin.file:
            path: "{{ item.0 }}"
            recurse: true
            mode: a-st,g-w,o-rwx
        register: rhel_08_6_2_10_patch
        when:
            - not ansible_check_mode
            - item.1.exists
        with_together:
            - "{{ rhel_08_6_2_10_audit.results | map(attribute='item') | list }}"
            - "{{ rhel_08_6_2_10_audit.results | map(attribute='stat') | list }}"
        loop_control:
            label: "{{ item.0 }}"

      # set default ACLs so the homedir has an effective umask of 0027
      - name: "6.2.10 | PATCH | Ensure local interactive user home directories exist"
        ansible.posix.acl:
            path: "{{ item.0 }}"
            default: true
            state: present
            recursive: true
            etype: "{{ item.1.etype }}"
            permissions: "{{ item.1.mode }}"
        when:
            - not system_is_container
        with_nested:
            - "{{ (ansible_check_mode | ternary(rhel_08_6_2_10_patch_audit, rhel_08_6_2_10_patch)).results |
              rejectattr('skipped', 'defined') | map(attribute='item') | map('first') | list }}"
            -
                - etype: group
                  mode: rx
                - etype: other
                  mode: '0'
  when:
      - rhel9cis_rule_6_2_10
  tags:
      - level1-server
      - level1-workstation
      - patch
      - users
      - rule_6.2.10

- name: "6.2.11 | PATCH | Ensure local interactive users own their home directories"
  ansible.builtin.file:
      path: "{{ item.dir }}"
      owner: "{{ item.id }}"
      state: directory
  with_items: "{{ rhel9cis_passwd }}"
  loop_control:
      label: "{{ rhel9cis_passwd_label }}"
  when:
      - item.uid >= min_int_uid | int
      - item.id != 'nobody'
      - (item.id != 'tss' and item.dir != '/dev/null')
      - item.shell != '/sbin/nologin'
      - rhel9cis_rule_6_2_11
  tags:
      - level1-server
      - level1-workstation
      - patch
      - users
      - rule_6.2.11

- name: "6.2.12 | PATCH | Ensure local interactive user home directories are mode 750 or more restrictive"
  block:
      - name: "6.2.12 | AUDIT | Ensure local interactive user home directories are mode 750 or more restrictive"
        ansible.builtin.stat:
            path: "{{ item }}"
        with_items: "{{ rhel9cis_passwd | selectattr('uid', '>=', min_int_uid | int) | selectattr('uid', '<=', max_int_uid | int) | map(attribute='dir') | list }}"
        register: rhel_08_6_2_12_audit

      - name: "6.2.12 | AUDIT | Ensure users' home directories permissions are 750 or more restrictive"
        ansible.builtin.shell: find -H {{ item.0 | quote }} -not -type l -perm /027
        check_mode: false
        changed_when: rhel_08_6_2_12_patch_audit.stdout | length > 0
        register: rhel_08_6_2_12_patch_audit
        when:
            - ansible_check_mode
            - item.1.exists
        with_together:
            - "{{ rhel_08_6_2_12_audit.results | map(attribute='item') | list }}"
            - "{{ rhel_08_6_2_12_audit.results | map(attribute='stat') | list }}"
        loop_control:
            label: "{{ item.0 }}"

      - name: "6.2.12 | PATCH | Ensure local interactive user home directories are mode 750 or more restrictive"
        ansible.builtin.file:
            path: "{{ item.0 }}"
            recurse: true
            mode: a-st,g-w,o-rwx
        register: rhel_08_6_2_12_patch
        when:
            - not ansible_check_mode
            - item.1.exists
        with_together:
            - "{{ rhel_08_6_2_12_audit.results | map(attribute='item') | list }}"
            - "{{ rhel_08_6_2_12_audit.results | map(attribute='stat') | list }}"
        loop_control:
            label: "{{ item.0 }}"

      # set default ACLs so the homedir has an effective umask of 0027
      - name: "6.2.12 | PATCH | Ensure local interactive user home directories are mode 750 or more restrictive"
        ansible.posix.acl:
            path: "{{ item.0 }}"
            default: true
            state: present
            recursive: true
            etype: "{{ item.1.etype }}"
            permissions: "{{ item.1.mode }}"
        when:
            - not system_is_container
        with_nested:
            - "{{ (ansible_check_mode | ternary(rhel_08_6_2_12_patch_audit, rhel_08_6_2_12_patch)).results |
              rejectattr('skipped', 'defined') | map(attribute='item') | map('first') | list }}"
            -
                - etype: group
                  mode: rx
                - etype: other
                  mode: '0'
  when:
      - rhel9cis_rule_6_2_12
  tags:
      - level1-server
      - level1-workstation
      - patch
      - users
      - permissions
      - rule_6.2.12

- name: "6.2.13 | PATCH | Ensure no local interactive user has .netrc files"
  ansible.builtin.file:
      path: "{{ item }}/.netrc"
      state: absent
  with_items:
      - "{{ interactive_users_home.stdout_lines }}"
  when:
      - rhel9cis_rule_6_2_13
  tags:
      - level1-server
      - level1-workstation
      - patch
      - users
      - permissions
      - rule_6.2.13

- name: "6.2.14 | PATCH | Ensure no local interactive user has .forward files"
  ansible.builtin.file:
      path: "{{ item }}/.forward"
      state: absent
  with_items:
      - "{{ interactive_users_home.stdout_lines }}"
  when:
      - rhel9cis_rule_6_2_14
  tags:
      - level1-server
      - level1-workstation
      - patch
      - users
      - files
      - rule_6.2.14

- name: "6.2.15 | PATCH | Ensure no local interactive user has .rhosts files"
  ansible.builtin.file:
      path: "~{{ item }}/.rhosts"
      state: absent
  with_items:
      - "{{ interactive_users_home.stdout_lines }}"
  when:
      - rhel9cis_rule_6_2_15
  tags:
      - level1-server
      - level1-workstation
      - patch
      - users
      - files
      - rule_6.2.15

- name: "6.2.16 | PATCH | Ensure local interactive user dot files are not group or world writable"
  block:

      - name: "6.2.16 | AUDIT | Ensure local interactive user dot files are not group or world writable | Check for files"
        ansible.builtin.find:
            path: /home
            depth: 3
            patterns: ".*"
            hidden: true
            recurse: true
            file_type: file
        register: user_dot_files

      - name: "6.2.16 | AUDIT | Ensure local interactive user dot files are not group or world writable | update permissions"
        ansible.builtin.file:
            path: "{{ item.path }}"
            mode: go-w
        loop: "{{ user_dot_files.files }}"
        loop_control:
            label: "{{ item.path }}"

  when:
      - rhel9cis_rule_6_2_16
  tags:
      - level1-server
      - level1-workstation
      - patch
      - users
      - permissions
      - rule_6.2.16