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

From Red Hat Enterprise Linux 5 Security Technical Implementation Guide

Part of GEN003050

Associated with IA controls: ECLP-1

Associated with: CCI-000225

SV-37400r1_rule Crontab files must be group-owned by root, cron, or the crontab creator's primary group.

Vulnerability discussion

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

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Fix text

Change the group owner of the crontab file to root, cron, or the crontab's primary group. Procedure: # chgrp root [crontab file]

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