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

From HP-UX 11.31 Security Technical Implementation Guide

Part of GEN004370

Associated with IA controls: ECLP-1

Associated with: CCI-000225

SV-35163r1_rule The aliases file must be group-owned by root, sys, bin, or other.

Vulnerability discussion

If the alias file is not group-owned by root, bin, sys or other, 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. # ls -lL /etc/mail/aliases If the file is not group-owned by root, bin, sys or other, this is a finding.

Fix text

Change the group-owner of the /etc/mail/aliases file. # chgrp root /etc/mail/aliases

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