Crontabs must be owned by root or the crontab creator.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-11994	GEN003040	SV-64401r1_rule		Medium

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

STIG	Date
Oracle Linux 5 Security Technical Implementation Guide	2020-02-25

Details

Check Text ( C-52801r1_chk )
List all crontabs on the system. # ls -lL /var/spool/cron # ls -lL /etc/cron.d /etc/crontab /etc/cron.daily /etc/cron.hourly /etc/cron.monthly /etc/cron.weekly or # ls -lL /etc/cron*|grep -v deny If any crontab is not owned by root or the creating user, this is a finding.

Fix Text (F-54983r2_fix)
Change the crontab owner to root or the crontab creator. # chown root or # chown