The /etc/gshadow file must be group-owned by root.

From Oracle Linux 5 Security Technical Implementation Guide

Associated with: CCI-000225

SV-62681r1_rule The /etc/gshadow file must be group-owned by root.

Vulnerability discussion

The /etc/gshadow file is critical to system security and must be protected from unauthorized modification. The /etc/gshadow file contains a list of system groups and hashes for group passwords.

Check content

Check the /etc/gshadow file is group-owned by root. # ls -l /etc/gshadow If the file is not group-owned by root, this is a finding.

Fix text

Change the group-owner of the /etc/gshadow file to root. # chgrp root /etc/gshadow

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