AIX audit logs must be rotated daily.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-91651	AIX7-00-002057	SV-101749r1_rule		Medium

Description
Rotate audit logs daily to preserve audit file system space and to conform to the DoD/DISA requirement. If it is not rotated daily and moved to another location, then there is more of a chance for the compromise of audit data by malicious users.

STIG	Date
IBM AIX 7.x Security Technical Implementation Guide	2020-02-24

Details

Check Text ( C-90805r3_chk )
Check for any "crontab" entries that rotate audit logs: # crontab -l 30 23 * * * /root/logrotate.sh #Daily log rotation script If such a cron job is found, this is not a finding. Otherwise, query the SA. If there is a process automatically rotating audit logs, this is not a finding. If the SA manually rotates audit logs, this is a finding. If the audit output is not archived daily, to tape or disk, this is a finding. Review the audit log directory. If more than one file is there, or if the file does not have today's date, this is a finding.

Check Text ( C-90805r3_chk )

Check for any "crontab" entries that rotate audit logs:

# crontab -l
30 23 * * * /root/logrotate.sh #Daily log rotation script
If such a cron job is found, this is not a finding.

Otherwise, query the SA.

If there is a process automatically rotating audit logs, this is not a finding.

If the SA manually rotates audit logs, this is a finding.

If the audit output is not archived daily, to tape or disk, this is a finding.

Review the audit log directory.

If more than one file is there, or if the file does not have today's date, this is a finding.

Fix Text (F-97849r1_fix)
Configure a cron job or other automated process to rotate the audit logs on a daily basis.