Crontab files must be group-owned by root, cron, or the crontab creator's primary group.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22385	GEN003050	SV-26531r1_rule	ECLP-1	Medium

Description
To protect the integrity of scheduled system jobs and prevent malicious modification to these jobs, crontab files must be secured.

STIG	Date
Draft AIX Security Technical Implementation Guide	2011-08-17

Details

Check Text ( C-27581r1_chk )
Check the group ownership of the crontab files. # ls -lL /var/spool/cron/crontabs/ If the group owner is not root, cron, or the crontab owner's primary group, this is a finding.

Fix Text (F-23772r1_fix)
Change the group owner of the crontab file to root, cron, or the crontab's primary group. Procedure: # chgrp root [crontab file]