Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide

The Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide (V1 R2) has 391 STIG checks. New to STIG checklists? Read What is a STIG checklist?, CKL vs CKLB, and STIG vs SCAP benchmark.

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Severity

Version

V1 · R2

CurrentPublished Wed Sep 30 2026

The TOSS 5 SSH server configuration file must be group-owned by root.

Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide

Assessment Title

Rule Text

The TOSS 5 SSH server configuration file must be group-owned by root.

Description

Discussion Text

Service configuration files enable or disable features of their respective services, which if configured incorrectly, can lead to insecure and vulnerable configurations. Therefore, service configuration files must be owned by the correct group to prevent unauthorized changes.

New to STIG checklists? Read What is a STIG checklist? and CKL vs CKLB.

Objective

V-282706

Rule

SV-282706r1201098_rule

Severity

medium

Rule Version

TOSS-05-000250

Documentable

false

IA Controls

NIST SP 800-53

Rev 5

Assessment Procedure

Check Text

Verify the group ownership of the "/etc/ssh/sshd_config" file using the following command:

$ ls -al /etc/ssh/sshd_config

rw-------. 1 root root 3669 Feb 22 11:34 /etc/ssh/sshd_config

If the "/etc/ssh/sshd_config" file does not have a group owner of "root", this is a finding.

Implementation Procedure

Fix Text

Configure the "/etc/ssh/sshd_config" file to be group-owned by root using the following command:

$ sudo chgrp root /etc/ssh/sshd_config

STIG check 332 of 391 in the Tri-Lab Operating System Stack (TOSS) 5 STIG checklist

← Previous · V-282705TOSS 5 must have the openssh-clients package installed.Next · V-282707 →The TOSS 5 SSH server configuration file must be owned by root.