SV-26988r1: The system's boot loader configuration file(s) must be group-owned by root, bin, sys, or system. | Red Hat Enterprise Linux 5 Security Technical Implementation Guide

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Assessment Title

Rule Text

The system's boot loader configuration file(s) must be group-owned by root, bin, sys, or system.

Description

Discussion Text

The system's boot loader configuration files are critical to the integrity of the system and must be protected. Unauthorized modifications resulting from improper group ownership may compromise the boot loader configuration.

How this relates to the STIG checklist: STIG vs SCAP benchmark.

IA Controls

NIST SP 800-53

Not mappedCCI-000225CCE-4197-0

Additional Details

Responsibility

System Administrator

IA Controls

ECLP-1

References

DPMS Target Red Hat 5 DISA DPMS Target Red Hat 5 2154

SCC Automation Reference

The reconstructed evaluation script behind this rule's OVAL check(s) — every module a compound check combines, with this rule's own concrete values and DISA's SCC tool's real per-module mechanism curated from static teardown of SCC releases.

#!/bin/bash
# Reconstructed from oval:mil.disa.fso.rhel11:def:448
# The system's boot loader configuration file(s) must be group-owned by root, bin, sys, or system.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# file_object (file_test)
test_1() {
  [ "$(stat -c '%g' '/boot/grub/grub.conf')" -eq 0 ]
}

if test_1; then
  echo "PASS"
else
  echo "FAIL"
fi

Assessment Script Powered by AISandbox-executed

A standalone Shell script to assess this control automatically. Review before running it in your environment.

Syntax-checked and actually executed in an isolated sandbox (not the real system this checks) — confirmed to run without errors.

#!/bin/sh
# OVAL Definition: oval:mil.disa.fso.rhel11:def:448
if [ ! -f "/boot/grub/grub.conf" ]; then echo "PASS"; exit 0; fi; [ "$(stat -c "%G" "/boot/grub/grub.conf")" = "root" ] && [ "$(stat -c "%G" "/boot/grub/grub.conf")" = "bin" ] && [ "$(stat -c "%G" "/boot/grub/grub.conf")" = "sys" ] && [ "$(stat -c "%G" "/boot/grub/grub.conf")" = "system" ] && echo "PASS" || echo "FAIL"; exit 0

Remediation

Change the group ownership of the file.
# chgrp root /boot/grub/grub.conf