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Check: GEN004390

AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE: GEN004390 (in versions v1 r14 through v1 r10)

Title

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

Discussion

Excessive permissions on the aliases file may permit unauthorized modification. If the alias file is modified by an unauthorized user, they may modify the file to run malicious code or redirect e-mail.

Check Content

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

Fix Text

Remove the extended ACL from the alias file and disable extended permissions. #acledit /etc/mail/aliases

Additional Identifiers

Rule ID: SV-38809r1_rule

Vulnerability ID: V-22439

Group Title: GEN004390

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