Files executed through a mail aliases file must be group-owned by root, bin, or sys, and must reside within a directory group-owned by root, bin, or sys.

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Files executed through a mail aliases file must be group-owned by root, bin, or sys, and must reside within a directory group-owned by root, bin, or sys.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22440	GEN004410	SV-39904r1_rule	ECLP-1	Medium

Description
If a file executed through a mail aliases file is not group-owned by root or a system group, it may be subject to unauthorized modification. Unauthorized modification of files executed through aliases may allow unauthorized users to attain root privileges.

STIG	Date
UNIX SRG	2013-03-26

Details

Check Text ( C-38925r1_chk )
Examine the contents of the /etc/mail/aliases file. For each file referenced, check the group ownership of the file. Procedure: # ls -lL If the group owner of any file is not root, bin, or sys, this is a finding.

Fix Text (F-34063r1_fix)
Change the group ownership of the file referenced from /etc/mail/aliases. Procedure: # chgrp root