SV-37269r1: All system start-up files must be group-owned by root, sys, bin, other, or system. | Red Hat Enterprise Linux 5 Security Technical Implementation Guide

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Assessment Title

Rule Text

All system start-up files must be group-owned by root, sys, bin, other, or system.

Description

Discussion Text

If system start-up files do not have a group owner of root or a system group, the files may be modified by malicious users or intruders.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000225

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:127
# All system start-up files must be group-owned by root, sys, bin, other, or system.
# 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) -- All system start-up files in directories matching /etc/rc* must be owned by a system group.: no extractor for field "group_id"
#   - file_object (file_test) -- All system start-up files must be owned by a system group. (/etc/init.d): no extractor for field "group_id"
#   - file_object (file_test) -- All system start-up files must be owned by a system group. (Files /etc/rc*): no extractor for field "group_id"
#   - file_object (file_test) -- Are there no files matching /etc/rc*: cannot derive an existence probe for this object type

# Are there no files in directories matching /etc/rc*
# file_object (file_test)
test_2() {
  ! ( find '^\/etc\/rc(.*)$' -maxdepth 1 -name '*' | grep -q . &>/dev/null )
}
# Are there no files matching /etc/init.d
# file_object (file_test)
test_4() {
  ! ( find '/etc/init.d' -maxdepth 1 -name '*' | grep -q . &>/dev/null )
}

if ! ( ! test_2 && ! test_4 ); 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.fso.rhel11:def:127
if [ ! -d "/etc/rc0.d" ] && [ ! -d "/etc/rc1.d" ] && [ ! -d "/etc/rc2.d" ] && [ ! -d "/etc/rc3.d" ] && [ ! -d "/etc/rc4.d" ] && [ ! -d "/etc/rc5.d" ] && [ ! -d "/etc/rc6.d" ]; then echo "PASS"; exit 0; fi
if [ ! -d "/etc/init.d" ]; then echo "PASS"; exit 0; fi
for file in /etc/rc[0-6].d/* /etc/init.d/*; do
    if [ ! -f "$file" ]; then continue; fi
    gid=$(stat -c "%g" "$file")
    if [ "$gid" != "0" ] && [ "$gid" != "64" ] && [ "$gid" != "2" ] && [ "$gid" != "777" ]; then
        echo "FAIL"; exit 1
    fi
done
echo "PASS"; exit 0

Remediation

Change the group ownership of the run control script(s) with incorrect group ownership.

Procedure:
# chgrp root <run control script>
# find /etc -name "[SK][0-9]*"|xargs stat -L -c %G:%n|egrep -v "^(root|sys|bin|other):"|cut -d: -f2|xargs chgrp root