RHEL 9 must periodically flush audit records to disk to prevent the loss of audit records.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-258168	RHEL-09-653095	SV-258168r926491_rule		Medium

Description
If option "freq" is not set to a value that requires audit records being written to disk after a threshold number is reached, then audit records may be lost.

STIG	Date
Red Hat Enterprise Linux 9 Security Technical Implementation Guide	2023-09-13

Details

Check Text ( C-61909r926489_chk )
Verify that audit system is configured to flush to disk after every 100 records with the following command: $ sudo grep freq /etc/audit/auditd.conf freq = 100 If "freq" isn't set to a value of "100" or greater, the value is missing, or the line is commented out, this is a finding.

Fix Text (F-61833r926490_fix)
Configure RHEL 9 to flush audit to disk by adding or updating the following rule in "/etc/audit/rules.d/audit.rules": freq = 100 The audit daemon must be restarted for the changes to take effect.