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V-239531

CAT II (Medium)

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

Rule ID

SV-239531r662044_rule

STIG

VMware vRealize Operations Manager 6.x SLES Security Technical Implementation Guide

Version

V2R2

CCIs

CCI-000382

Discussion

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.

Check Content

Examine the contents of the "/etc/aliases" file:

# more /etc/aliases

Examine the aliases file for any directories or paths that may be utilized:

# ls -lL <file referenced from aliases>

Check the permissions for any paths referenced. 

If the group owner of any file is not "root", "bin", "sys", or "system", this is a finding.

Fix Text

Change the group ownership of the file referenced from "/etc/mail/aliases":

# chgrp root <file referenced from aliases>