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Check: GEN004950

AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE: GEN004950 (in versions v1 r14 through v1 r10)

Title

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

Discussion

Excessive permissions on the ftpusers file could permit unauthorized modification. Unauthorized modification could result in Denial of Service to authorized FTP users or permit unauthorized users to access the FTP service.

Check Content

Check the permissions of the /etc/ftpusers file. #aclget /etc/ftpusers Check if extended permissions are disabled. If extended permissions are not disabled, this is a finding.

Fix Text

Remove the extended ACL from the ftpusers file and disable extended permissions. #acledit /etc/ftpusers

Additional Identifiers

Rule ID: SV-38812r1_rule

Vulnerability ID: V-22445

Group Title: GEN004950

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