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Check: GEN003255

AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE: GEN003255 (in versions v1 r14 through v1 r10)

Title

The at.deny file must not have an extended ACL. (Cat II impact)

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

Additional Identifiers

Rule ID: SV-38788r1_rule

Vulnerability ID: V-22393

Group Title: GEN003255

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