Information
Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.
At a minimum, the organization must audit the full-text recording of privileged access commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise.
Satisfies: SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215
Solution
Configure the operating system to generate audit records when successful/unsuccessful attempts to access the '/etc/sudoers' file and files in the '/etc/sudoers.d/' directory.
Add or update the following rule in '/etc/audit/rules.d/audit.rules':
-w /etc/sudoers -p wa -k privileged-actions
-w /etc/sudoers.d/ -p wa -k privileged-actions
The audit daemon must be restarted for the changes to take effect.