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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22385	GEN003050 M6	SV-38107r1_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
MAC OSX 10.6 Workstation Security Technical Implementation Guide Draft	2013-01-10

Details

Check Text ( C-37680r1_chk )
Open a terminal session and enter the following commands to verify the group ownership of the "crontab" files. ls -lL /usr/sbin/cron ls -lL /usr/lib/cron ls -lL /usr/bin/crontab ls -lL /private/var/at/cron.deny If the group-owner is not wheel or the crontab owner's primary group, this is a finding.

Fix Text (F-32920r1_fix)
Open a terminal session and enter the following command to set the group to wheel. chgrp wheel