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 interactive user home directories must be group-owned by the home directory owner's primary group.

DISA Rule

SV-252961r991589_rule

Vulnerability Number

V-252961

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

TOSS-04-020210

Severity

CAT II

CCI(s)

CCI-000366 - Implement the security configuration settings.

Weight

Fix Recommendation

Change the group owner of a local interactive user's home directory to the group found in "/etc/passwd." To change the group owner of a local interactive user's home directory, use the following command:

Note: The example will be for the user "smithj", who has a home directory of "/home/smithj", and has a primary group of users.

$ sudo chgrp users /home/smithj

Check Contents

Verify the assigned home directory of all local interactive users is group-owned by that user's primary GID with the following command:

Note: This may miss local interactive users that have been assigned a privileged UID. Evidence of interactive use may be obtained from a number of log files containing system logon information. The returned directory "/home/smithj" is used as an example.

$ sudo ls -ld $(awk -F: '($3>=1000)&&($7 !~ /nologin/){print $6}' /etc/passwd)

drwxr-x--- 2 smithj admin 4096 Jun 5 12:41 smithj

Check the user's primary group with the following command:

$ sudo grep $(grep smithj /etc/passwd | awk -F: '{print $4}') /etc/group

admin:x:250:smithj,jonesj,jacksons

If the user home directory referenced in "/etc/passwd" is not group-owned by that user's primary GID, this is a finding.

Vulnerability Number

V-252961

Documentable

False

Rule Version

TOSS-04-020210

Severity Override Guidance

Check Content Reference

Target Key

5469