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Check: GEN004370

AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE: GEN004370 (in versions v1 r14 through v1 r10)

Title

The aliases file must be group-owned by sys, bin, or system. (Cat II impact)

Discussion

If the alias file is not group-owned by a system group, an unauthorized user may modify the file to add aliases to run malicious code or redirect e-mail.

Check Content

Check the group ownership of the /etc/mail/aliases file. Procedure: # ls -lL /etc/mail/aliases If the file is not group-owned by sys, bin, or system, this is a finding.

Fix Text

Change the group owner of the /etc/mail/aliases file. Procedure: # chgrp system /etc/mail/aliases

Additional Identifiers

Rule ID: SV-40683r1_rule

Vulnerability ID: V-22438

Group Title: GEN004370

Expert Comments

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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