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Check: GEN003470

VMware ESX 3 Server: GEN003470 (in version v1 r2)

Title

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

Discussion

If the group owner of the at.allow file is not set to root, 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 at.allow If the group owner is not root, bin, sys, or cron, this is a finding.

Fix Text

Change the group owner of the at.allow file to root, sys, bin, or cron. Procedure: # chgrp root at.allow

Additional Identifiers

Rule ID: SV-26050r1_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