The audit system must be configured to audit changes to the /etc/sudoers file.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-208909	OL6-00-000201	SV-208909r793695_rule		Low

Description
The actions taken by system administrators should be audited to keep a record of what was executed on the system, as well as, for accountability purposes.

STIG	Date
Oracle Linux 6 Security Technical Implementation Guide	2021-12-03

Details

Check Text ( C-9162r357707_chk )
To verify that auditing is configured for system administrator actions, run the following command: $ sudo grep -w "/etc/sudoers" /etc/audit/audit.rules If the system is configured to watch for changes to its sudoers configuration, a line should be returned (including "-p wa" indicating permissions that are watched). If there is no output, this is a finding.

Fix Text (F-9162r357708_fix)
At a minimum, the audit system should collect administrator actions for all users and root. Add the following to "/etc/audit/audit.rules": -w /etc/sudoers -p wa -k actions