All shell files must be group-owned by root, bin, sys, or system.

From Red Hat Enterprise Linux 5 Security Technical Implementation Guide

Part of GEN002210

Associated with IA controls: ECLP-1

Associated with: CCI-000225

SV-37399r1_rule All shell files must be group-owned by root, bin, sys, or system.

Vulnerability discussion

If shell files are group-owned by users other than root or a system group, they could be modified by intruders or malicious users to perform unauthorized actions.

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Fix text

Change the group-owner of the shell to root, bin, sys, or system. Procedure: # chgrp root

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