The at.allow file must be group-owned by root, bin, sys, or cron.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22397	GEN003470	SV-26569r1_rule	ECLP-1	Medium

Description
If the group owner of the at.allow file is not set to root, bin, sys, or cron, unauthorized users could be allowed to view or edit the list of users permitted to run "at" jobs. Unauthorized modification could result in Denial of Service to authorized "at" users or provide unauthorized users with the ability to run "at" jobs.

STIG	Date
Red Hat Enterprise Linux 5 Security Technical Implementation Guide	2017-03-01

Details

Check Text ( C-36193r1_chk )
Check the group ownership of the file. Procedure: # ls -lL /etc/at.allow If the file is not group-owned by root, bin, sys, or cron, this is a finding.

Fix Text (F-31450r1_fix)
Change the group ownership of the file. Procedure: # chgrp root /etc/at.allow