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 /boot/grub2/grub.cfg file must be owned by root.

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

Assessment Title

Rule Text

The TOSS 5 /boot/grub2/grub.cfg file must be owned by root.

Description

Discussion Text

The "/boot/grub2/grub.cfg" file stores sensitive system configurations. Protecting this file is critical for system security.

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

Objective

V-282629

Rule

SV-282629r1200867_rule

Severity

medium

Rule Version

TOSS-05-000096

Documentable

false

IA Controls

NIST SP 800-53

Rev 5

Assessment Procedure

Check Text

Verify the ownership of the "/boot/grub2/grub.cfg" file using the following command:

$ sudo stat -c "%U %n" /boot/grub2/grub.cfg 

root /boot/grub2/grub.cfg 

If "/boot/grub2/grub.cfg" file does not have an owner of "root", this is a finding.

Implementation Procedure

Fix Text

Change the owner of the file "/boot/grub2/grub.cfg" to root using the following command:

$ sudo chown root /boot/grub2/grub.cfg

STIG check 255 of 391 in the Tri-Lab Operating System Stack (TOSS) 5 STIG checklist

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