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Check: GEN003470

AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE: GEN003470 (in versions v1 r14 through v1 r10)

Title

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

Discussion

If the group-owner of the at.allow file is not set to system, bin, sys, or cron, unauthorized users could be allowed to view or edit the list of users permitted to run at jobs. Unauthorized modification 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 group owner of the at.allow file. Procedure: # ls -lL /var/adm/cron/at.allow If the group-owner is not bin, sys, system, or cron, this is a finding.

Fix Text

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

Additional Identifiers

Rule ID: SV-39354r1_rule

Vulnerability ID: V-22397

Group Title: GEN003470

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