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Siemens/feat/bgrubby usage for params #166

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merged 2 commits into from
Feb 19, 2024
Merged

Siemens/feat/bgrubby usage for params #166

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1880342
Replacing secure-configuration of 'audit' and 'audit_backlog_limit' f…
ipruteanu-sie Jan 26, 2024
e2738f0
Fixing indentation for lines reported by yamllint
ipruteanu-sie Jan 31, 2024
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50 changes: 14 additions & 36 deletions tasks/section_4/cis_4.1.1.x.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -24,28 +24,17 @@

- name: "4.1.1.2 | PATCH | Ensure auditing for processes that start prior to auditd is enabled"
block:
- name: "4.1.1.2 | AUDIT | Ensure auditing for processes that start prior to auditd is enabled | Get GRUB_CMDLINE_LINUX"
ansible.builtin.shell: grep 'GRUB_CMDLINE_LINUX=' /etc/default/grub | sed 's/.$//'
- name: "4.1.1.2 | PATCH | Ensure auditing for processes that start prior to auditd is enabled | Grubby existence of current value"
ansible.builtin.shell: grubby --info=ALL | grep args | grep -o -E "audit=([[:digit:]])+" | grep -o -E "([[:digit:]])+"
changed_when: false
failed_when: false
check_mode: false
register: rhel9cis_4_1_1_2_grub_cmdline_linux
register: rhel9cis_4_1_1_2_grubby_curr_value_audit_linux

- name: "4.1.1.2 | PATCH | Ensure auditing for processes that start prior to auditd is enabled | Replace existing setting"
ansible.builtin.replace:
path: /etc/default/grub
regexp: 'audit=.'
replace: 'audit=1'
notify: Grub2cfg
when: "'audit=' in rhel9cis_4_1_1_2_grub_cmdline_linux.stdout"

- name: "4.1.1.2 | PATCH | Ensure auditing for processes that start prior to auditd is enabled | Add audit setting if missing"
ansible.builtin.lineinfile:
path: /etc/default/grub
regexp: '^GRUB_CMDLINE_LINUX='
line: '{{ rhel9cis_4_1_1_2_grub_cmdline_linux.stdout }} audit=1"'
notify: Grub2cfg
when: "'audit=' not in rhel9cis_4_1_1_2_grub_cmdline_linux.stdout"
- name: "4.1.1.2 | PATCH | Ensure auditing for processes that start prior to auditd is enabled | Grubby update, if needed"
ansible.builtin.shell: grubby --update-kernel=ALL --args="audit=1"
when:
- rhel9cis_4_1_1_2_grubby_curr_value_audit_linux is not defined or rhel9cis_4_1_1_2_grubby_curr_value_audit_linux | int != 1
when:
- rhel9cis_rule_4_1_1_2
tags:
Expand All @@ -58,28 +47,17 @@

- name: "4.1.1.3 | PATCH | Ensure audit_backlog_limit is sufficient"
block:
- name: "4.1.1.3 | AUDIT | Ensure audit_backlog_limit is sufficient | Get GRUB_CMDLINE_LINUX"
ansible.builtin.shell: grep 'GRUB_CMDLINE_LINUX=' /etc/default/grub | sed 's/.$//'
- name: "4.1.1.3 | AUDIT | Ensure audit_backlog_limit is sufficient | Grubby existence of current value"
ansible.builtin.shell: grubby --info=ALL | grep args | grep -o -E "audit_backlog_limit=([[:digit:]])+" | grep -o -E "([[:digit:]])+"
changed_when: false
failed_when: false
check_mode: false
register: rhel9cis_4_1_1_3_grub_cmdline_linux

- name: "4.1.1.3 | PATCH | Ensure audit_backlog_limit is sufficient | Replace existing setting"
ansible.builtin.replace:
path: /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_3_grub_cmdline_linux.stdout"
register: rhel9cis_4_1_1_3_grubby_curr_value_backlog_linux

- name: "4.1.1.3 | PATCH | Ensure audit_backlog_limit is sufficient | Add audit_backlog_limit setting if missing"
ansible.builtin.lineinfile:
path: /etc/default/grub
regexp: '^GRUB_CMDLINE_LINUX='
line: '{{ rhel9cis_4_1_1_3_grub_cmdline_linux.stdout }} audit_backlog_limit={{ rhel9cis_audit_back_log_limit }}"'
notify: Grub2cfg
when: "'audit_backlog_limit=' not in rhel9cis_4_1_1_3_grub_cmdline_linux.stdout"
- name: "4.1.1.3 | AUDIT | Ensure audit_backlog_limit is sufficient | Grubby update, if needed"
ansible.builtin.shell: grubby --update-kernel=ALL --args="audit_backlog_limit={{ rhel9cis_audit_back_log_limit }}"
when:
- rhel9cis_4_1_1_2_grubby_curr_value_audit_linux is not defined or rhel9cis_4_1_1_2_grubby_curr_value_audit_linux.stdout | int < rhel9cis_audit_back_log_limit
when:
- rhel9cis_rule_4_1_1_3
tags:
Expand Down