SV-281086r1268226: RHEL 10 must enforce "root" group ownership of the "/boot/grub2/grub.cfg" file. | Red Hat Enterprise Linux 10 STIG SCAP Benchmark

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Assessment Title

Rule Text

RHEL 10 must enforce "root" group ownership of the "/boot/grub2/grub.cfg" file.

Description

Discussion Text

The "root" group is a highly privileged group. Furthermore, the group owner of this file should not have any access privileges anyway.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000213

References

DPMS Target Red Hat Enterprise Linux 10 DISA DPMS Target Red Hat Enterprise Linux 10 5733

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.stig.rhel10os:def:281086
# RHEL 10 must enforce "root" group ownership of the "/boot/grub2/grub.cfg" file.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# /boot/grub2/grub.cfg file is group-owned by root
# file_object (file_test)
test_1() {
  [ "$(stat -c '%g' '/boot/grub2/grub.cfg')" -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.stig.rhel10os:def:281086
if [ ! -f "/boot/grub2/grub.cfg" ]; then echo "PASS"; exit 0; fi; [ $(stat -c "%G /boot/grub2/grub.cfg" | grep -q "^root$") ] && echo "PASS" || echo "FAIL"; exit 0

Remediation

Configure RHEL 10 to enforce group ownership of the "/boot/grub2/grub.cfg" file.

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

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