The at.deny file must have mode 0640 or less permissive.

From AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE

Associated with IA controls: ECLP-1

Associated with: CCI-000225

SV-38787r1_rule The at.deny file must have mode 0640 or less permissive.

Vulnerability discussion

The at daemon control files restrict access to scheduled job manipulation and must be protected. Unauthorized modification of the at.deny file could result in Denial of Service to authorized at users or provide unauthorized users with the ability to run at jobs.

Check content

Determine the mode of the at.deny file. # ls -lL /var/adm/cron/at.deny If the mode of the at.deny file is more permissive than 0640, this is a finding.

Fix text

Change the mode of the at.deny file to 0640. # chmod 0640 /var/adm/cron/at.deny

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