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Check: GEN003245

AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE: GEN003245 (in versions v1 r14 through v1 r10)

Title

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

Discussion

File system extended ACLs provide access to files beyond what is allowed by the mode numbers of the files. Unauthorized modification of the at.allow file could result in Denial of Service to authorized at users and the granting of the ability to run at jobs to unauthorized users.

Check Content

#aclget /var/adm/cron/at.allow 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.allow file and disable extended permissions. #acledit /var/adm/cron/at.allow

Additional Identifiers

Rule ID: SV-38786r1_rule

Vulnerability ID: V-22390

Group Title: GEN003245

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