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

TOSS 5 /etc/crontab file must have mode 0600.

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

Assessment Title

Rule Text

TOSS 5 /etc/crontab file must have mode 0600.

Description

Discussion Text

Service configuration files enable or disable features of their respective services that if configured incorrectly can lead to insecure and vulnerable configurations; therefore, service configuration files must have the correct access rights to prevent unauthorized changes.

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

Objective

V-282673

Rule

SV-282673r1201585_rule

Severity

medium

Rule Version

TOSS-05-000190

Documentable

false

IA Controls

NIST SP 800-53

Rev 5

Assessment Procedure

Check Text

Verify the permissions of /etc/crontab using the following command:

$ stat -c "%a %n" /etc/crontab

0600

If /etc/crontab does not have a mode of "0600", this is a finding.

Implementation Procedure

Fix Text

Configure the TOSS 5 file /etc/crontab with mode "600".

$ sudo chmod 0600 /etc/crontab

STIG check 299 of 391 in the Tri-Lab Operating System Stack (TOSS) 5 STIG checklist

← Previous · V-282672TOSS 5 must be configured so that all system device files are correctly labeled to prevent unauthorized modification.Next · V-282674 →The TOSS 5 /etc/shadow file must have mode 0000 to prevent unauthorized access.