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

From AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE

Associated with IA controls: ECLP-1

Associated with: CCI-000225

SV-39866r1_rule Crontab files must be group-owned by system, 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.

Check content

Check the group ownership of the crontab files. # ls -lL /var/spool/cron/crontabs/ If the group owner is not system, cron, or the crontab owner's primary group, this is a finding.

Fix text

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

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