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Check: GEN004940

AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE: GEN004940 (in versions v1 r14 through v1 r10)

Title

The ftpusers file must have mode 0640 or less permissive. (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 ftpusers file. # ls -l /etc/ftpusers If the ftpusers file has a mode more permissive than 0640, this is a finding.

Fix Text

Change the mode of the ftpusers file to 0640. # chmod 0640 /etc/ftpusers

Additional Identifiers

Rule ID: SV-28412r1_rule

Vulnerability ID: V-843

Group Title: GEN004940

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