The system must set a maximum audit log file size.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-38633	RHEL-06-000160	SV-50434r1_rule		Medium

Description
The total storage for audit log files must be large enough to retain log information over the period required. This is a function of the maximum log file size and the number of logs retained.

STIG	Date
Red Hat Enterprise Linux 6 Security Technical Implementation Guide	2014-06-11

Details

Check Text ( C-46192r1_chk )
Inspect "/etc/audit/auditd.conf" and locate the following line to determine how much data the system will retain in each audit log file: "# grep max_log_file /etc/audit/auditd.conf" max_log_file = 6 If the system audit data threshold hasn't been properly set up, this is a finding.

Fix Text (F-43582r1_fix)
Determine the amount of audit data (in megabytes) which should be retained in each log file. Edit the file "/etc/audit/auditd.conf". Add or modify the following line, substituting the correct value for [STOREMB]: max_log_file = [STOREMB] Set the value to "6" (MB) or higher for general-purpose systems. Larger values, of course, support retention of even more audit data.