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All audit configuration files must be owned by root user.
To properly set the owner of /etc/audit/
, run the command:
$ sudo chown root /etc/audit/
To properly set the owner of /etc/audit/rules.d/
, run the command:
$ sudo chown root /etc/audit/rules.d/
Without the capability to restrict which roles and individuals can select which events are audited, unauthorized personnel may be able to prevent the auditing of critical events. Misconfigured audits may degrade the system’s performance by overwhelming the audit log. Misconfigured audits may also make it more difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.
The following script can be run on the host to remediate the issue.
#!/bin/bash
# Remediation is applicable only in certain platforms
if [ ! -f /.dockerenv ] && [ ! -f /run/.containerenv ] && dpkg-query --show --showformat='${db:Status-Status}\n' 'auditd' 2>/dev/null | grep -q installed; then
find /etc/audit/ -maxdepth 1 -L -type f ! -uid 0 -regextype posix-extended -regex '^.*audit(\.rules|d\.conf)$' -exec chown -L 0 {} \;
find /etc/audit/rules.d/ -maxdepth 1 -L -type f ! -uid 0 -regextype posix-extended -regex '^.*\.rules$' -exec chown -L 0 {} \;
else
>&2 echo 'Remediation is not applicable, nothing was done'
fi
The following playbook can be run with Ansible to remediate the issue.
- name: Gather the package facts
package_facts:
manager: auto
tags:
- DISA-STIG-UBTU-20-010134
- configure_strategy
- file_ownership_audit_configuration
- low_complexity
- low_disruption
- medium_severity
- no_reboot_needed
- name: Find /etc/audit/ file(s) matching ^.*audit(\.rules|d\.conf)$
command: find -H /etc/audit/ -maxdepth 1 -type f ! -uid 0 -regextype posix-extended
-regex "^.*audit(\.rules|d\.conf)$"
register: files_found
changed_when: false
failed_when: false
check_mode: false
when:
- '"auditd" in ansible_facts.packages'
- ansible_virtualization_type not in ["docker", "lxc", "openvz", "podman", "container"]
tags:
- DISA-STIG-UBTU-20-010134
- configure_strategy
- file_ownership_audit_configuration
- low_complexity
- low_disruption
- medium_severity
- no_reboot_needed
- name: Ensure owner on /etc/audit/ file(s) matching ^.*audit(\.rules|d\.conf)$
file:
path: '{{ item }}'
owner: '0'
state: file
with_items:
- '{{ files_found.stdout_lines }}'
when:
- '"auditd" in ansible_facts.packages'
- ansible_virtualization_type not in ["docker", "lxc", "openvz", "podman", "container"]
tags:
- DISA-STIG-UBTU-20-010134
- configure_strategy
- file_ownership_audit_configuration
- low_complexity
- low_disruption
- medium_severity
- no_reboot_needed
- name: Find /etc/audit/rules.d/ file(s) matching ^.*\.rules$
command: find -H /etc/audit/rules.d/ -maxdepth 1 -type f ! -uid 0 -regextype posix-extended
-regex "^.*\.rules$"
register: files_found
changed_when: false
failed_when: false
check_mode: false
when:
- '"auditd" in ansible_facts.packages'
- ansible_virtualization_type not in ["docker", "lxc", "openvz", "podman", "container"]
tags:
- DISA-STIG-UBTU-20-010134
- configure_strategy
- file_ownership_audit_configuration
- low_complexity
- low_disruption
- medium_severity
- no_reboot_needed
- name: Ensure owner on /etc/audit/rules.d/ file(s) matching ^.*\.rules$
file:
path: '{{ item }}'
owner: '0'
state: file
with_items:
- '{{ files_found.stdout_lines }}'
when:
- '"auditd" in ansible_facts.packages'
- ansible_virtualization_type not in ["docker", "lxc", "openvz", "podman", "container"]
tags:
- DISA-STIG-UBTU-20-010134
- configure_strategy
- file_ownership_audit_configuration
- low_complexity
- low_disruption
- medium_severity
- no_reboot_needed