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All files and directories must have a valid group owner.


Overview

Finding ID Version Rule ID IA Controls Severity
V-215003 UBTU-16-010710 SV-215003r610931_rule Medium
Description
Files without a valid group owner may be unintentionally inherited if a group is assigned the same Group Identifier (GID) as the GID of the files without a valid group owner.
STIG Date
Canonical Ubuntu 16.04 LTS Security Technical Implementation Guide 2020-12-09

Details

Check Text ( C-16202r284877_chk )
Verify all files and directories on the Ubuntu operating system have a valid group.

Check the owner of all files and directories with the following command:

# sudo find / -nogroup

If any files on the system do not have an assigned group, this is a finding.
Fix Text (F-16200r284878_fix)
Either remove all files and directories from the Ubuntu operating system that do not have a valid group, or assign a valid group to all files and directories on the system with the "chgrp" command:

# sudo chgrp