SV-37357r1: The /etc/group file must not have an extended ACL. | Red Hat Enterprise Linux 5 Security Technical Implementation Guide

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Assessment Title

Rule Text

The /etc/group file must not have an extended ACL.

Description

Discussion Text

The /etc/group file is critical to system security and must be protected from unauthorized modification. The group file contains a list of system groups and associated information.

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:514
# The /etc/group file must not have an extended ACL.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# The /etc/group file must not have an extended ACL.
# file_object (file_test)
test_1() {
  (stat -c '%A' '/etc/group' | awk '{print (index($0,"+")>0)?"true":"false"}') | grep -qxF 'true'
}

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

Remediation

Remove the extended ACL from the file.
# setfacl --remove-all /etc/group