STIGQter STIGQter: STIG Summary: Tri-Lab Operating System Stack (TOSS) 4 Security Technical Implementation Guide Version: 2 Release: 6 Benchmark Date: 01 Jul 2026:

All TOSS local files and directories must have a valid group owner.

DISA Rule

SV-253099r991589_rule

Vulnerability Number

V-253099

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

TOSS-04-040570

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Either remove all files and directories from TOSS 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 <group> <file>

Check Contents

Verify all local files and directories on TOSS have a valid group with the following command:

Note: The value after -fstype must be replaced with the filesystem type. XFS is used as an example.

$ sudo find / -fstype xfs -nogroup

If any files on the system do not have an assigned group, this is a finding.

Note: Command may produce error messages from the /proc and /sys directories.

Vulnerability Number

V-253099

Documentable

False

Rule Version

TOSS-04-040570

Severity Override Guidance

Verify all local files and directories on TOSS have a valid group with the following command:

Note: The value after -fstype must be replaced with the filesystem type. XFS is used as an example.

$ sudo find / -fstype xfs -nogroup

If any files on the system do not have an assigned group, this is a finding.

Note: Command may produce error messages from the /proc and /sys directories.

Check Content Reference

M

Target Key

5469