All files and directories must have a valid group-owner.

From Oracle Linux 5 Security Technical Implementation Guide

Associated with: CCI-000366

SV-64465r2_rule All files and directories must have a valid group-owner.

Vulnerability discussion

Files without a valid group owner may be unintentionally inherited if a group is assigned the same GID as the GID of the files without a valid group-owner.

Check content

Search the system for files without a valid group-owner. # find / -ignore_readdir_race -nogroup If any files are found, this is a finding.

Fix text

Change the group-owner for each file without a valid group-owner. # chgrp avalidgroup /tmp/a-file-without-a-valid-group-owner

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