STIGQter: STIG Summary: Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 26 Mar 2026:

All TOSS 5 local files and directories must have a valid group owner.

DISA Rule

SV-282670r1200990_rule

Vulnerability Number

V-282670

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

TOSS-05-000187

Severity

CAT II

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

Either remove all files and directories from TOSS 5 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 5 have a valid group using the following command:

$ df --local -P | awk {'if (NR!=1) print $6'} | sudo xargs -I '{}' find '{}' -xdev -nogroup

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

Vulnerability Number

V-282670

Documentable

False

Rule Version

TOSS-05-000187

Severity Override Guidance

Verify all local files and directories on TOSS 5 have a valid group using the following command:

$ df --local -P | awk {'if (NR!=1) print $6'} | sudo xargs -I '{}' find '{}' -xdev -nogroup

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

Check Content Reference

M

Target Key

5738