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Check: GEN003270

AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE: GEN003270 (in versions v1 r14 through v1 r10)

Title

The cron.deny file must be group-owned by system, bin, sys, or cron. (Cat II impact)

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

Additional Identifiers

Rule ID: SV-38789r1_rule

Vulnerability ID: V-22394

Group Title: GEN003270

Expert Comments

Expert comments are only available to logged-in users.

CCIs

CCIs tied to check.

Number	Definition
CCI-000225	The organization employs the concept of least privilege, allowing only authorized accesses for users (and processes acting on behalf of users) which are necessary to accomplish assigned tasks in accordance with organizational missions and business functions.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
AC-6	Least Privilege