SV-281047r1268226: RHEL 10 must be configured so that the Secure Shell (SSH) server configuration file is group-owned by "root". | Red Hat Enterprise Linux 10 STIG SCAP Benchmark

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Assessment Title

Rule Text

RHEL 10 must be configured so that the Secure Shell (SSH) server configuration file is 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.

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:281047
# RHEL 10 must be configured so that the Secure Shell (SSH) server configuration file is group-owned by "root".
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.
#
# MANUAL REVIEW REQUIRED -- the module(s) below could not be reconstructed
# into working code from curated SCC reference data, and are excluded from
# the automated result:
#   - file_object (file_test) -- The /etc/ssh/sshd_config.d files are group-owned by root.: no extractor for field "group_id"

# The /etc/ssh/sshd_config file is group-owned by root.
# file_object (file_test)
test_1() {
  [ "$(stat -c '%g' '/etc/ssh/sshd_config')" -eq 0 ]
}
# The /etc/ssh/sshd_config.d directory and sub-directories are group-owned by root.
# file_object (file_test)
test_2() {
  [ "$(stat -c '%g' '/etc/ssh/sshd_config.d')" -eq 0 ]
}

if ( test_1 && test_2 ); then
  echo "PASS (automated portion only -- MANUAL REVIEW still required, see notes above)"
else
  echo "FAIL (or see MANUAL REVIEW note above)"
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:281047
if [ ! -f "/etc/ssh/sshd_config" ]; then echo "PASS"; exit 0; fi; if [ ! -gid "/etc/ssh/sshd_config" -o $(stat -c "%G" "/etc/ssh/sshd_config" | grep -q "^root$") ]; then echo "FAIL"; exit 1; fi; if [ ! -d "/etc/ssh/sshd_config.d" ]; then echo "PASS"; exit 0; fi; if [ ! -gid "/etc/ssh/sshd_config.d" -o $(find "/etc/ssh/sshd_config.d" -type f -exec stat -c "%G" {} \; | grep -q "^root$") ]; then echo "FAIL"; exit 1; fi; echo "PASS"; exit 0

Remediation

Configure RHEL 10 so that the "/etc/ssh/sshd_config" file and the contents of "/etc/ssh/sshd_config.d" are group-owned by "root" with the following command:

$ sudo chgrp root /etc/ssh/sshd_config /etc/ssh/sshd_config.d