The cron.deny file must be group-owned by system, bin, sys, or cron.

From AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE

Associated with IA controls: ECLP-1

Associated with: CCI-000225

SV-38789r1_rule The cron.deny file must be group-owned by system, bin, sys, or cron.

Vulnerability discussion

Cron daemon control files restrict the scheduling of automated tasks and must be protected. Unauthorized modification of the cron.deny file could result in Denial of Service to authorized cron users or could provide unauthorized users with the ability to run cron jobs.

Check content

Determine the cron.deny file's group owner. Procedure: # ls -lL /var/adm/cron/cron.deny If the file is not group-owned by system, bin, sys, or cron, this is a finding.

Fix text

Change the group owner of the cron.deny file to sys, system, bin, or cron. Procedure: # chgrp cron /var/adm/cron/cron.deny

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