Information
The operating system must generate audit records when successful/unsuccessful attempts to modify the /etc/sudoers file occur.
GROUP ID: V-260646
RULE ID: SV-260646r991575
Without generating audit records specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.
Audit records can be generated from various components within the information system (e.g., module or policy filter).
Solution
Configure the audit system to generate audit records for all modifications that affect "/etc/sudoers".
Add or modify the following line to "/etc/audit/rules.d/stig.rules":
-w /etc/sudoers -p wa -k privilege_modification
To reload the rules file, issue the following command:
$ sudo augenrules --load
Note: The "-k " at the end of the line gives the rule a unique meaning to help during an audit investigation. The does not need to match the example above.