The at.deny file must not have an extended ACL.

From AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE

Part of GEN003255

Associated with IA controls: ECLP-1

Associated with: CCI-000225

SV-38788r1_rule The at.deny file must not have an extended ACL.

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 if the at.deny file has an extended ACL. #aclget /var/adm/cron/at.deny Verify if extended permissions are disabled. If extended permissions are not disabled, this is a finding.

Fix text

Remove the extended ACL from the at.deny file and disable extended permissions. #acledit /var/adm/cron/at.deny

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