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The aliases file must be group-owned by sys, bin, or system.


Overview

Finding ID Version Rule ID IA Controls Severity
V-22438 GEN004370 SV-40683r1_rule ECLP-1 Medium
Description
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.
STIG Date
AIX 5.3 Security Technical Implementation Guide 2012-05-25

Details

Check Text ( C-39413r1_chk )
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 (F-34538r1_fix)
Change the group owner of the /etc/mail/aliases file.

Procedure:
# chgrp system /etc/mail/aliases