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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-258168r958428_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 2024-06-04

Details

Check Text ( C-61909r943022_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 between "1" and "100", the value is missing, or the line is commented out, this is a finding.
Fix Text (F-61833r943023_fix)
Configure RHEL 9 to flush audit to disk by adding or updating the following rule in "/etc/audit/auditd.conf":

freq = 100

The audit daemon must be restarted for the changes to take effect.