SV-204491r991589: The Red Hat Enterprise Linux operating system must be configured so that the cron.allow file, if it exists, is group-owned by root. | Red Hat Enterprise Linux 7 STIG SCAP Benchmark

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Assessment Title

Rule Text

The Red Hat Enterprise Linux operating system must be configured so that the cron.allow file, if it exists, is group-owned by root.

Description

Discussion Text

If the group owner of the "cron.allow" file is not set to root, sensitive information could be viewed or edited by unauthorized users.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000366SV-86679V-72055

References

DPMS Target Red Hat Enterprise Linux 7 DISA DPMS Target Red Hat Enterprise Linux 7 2899

Checks

DISA STIG (Manual Reference)

Verify that the "cron.allow" file is group-owned by root.

Check the group owner of the "cron.allow" file with the following command:

# ls -al /etc/cron.allow
-rw------- 1 root root 6 Mar  5  2011 /etc/cron.allow

If the "cron.allow" file exists and has a group owner other than root, this is a finding.

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.rhel7:def:114
# The Red Hat Enterprise Linux operating system must be configured so that the cron.allow file, if it exists, 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.

# file_object (file_test)
test_1() {
  [ "$(stat -c '%g' '/etc/cron.allow')" -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:mil.disa.stig.rhel7:def:114
if [ ! -f "/etc/cron.allow" ]; then echo "PASS"; exit 0; fi
if [ "$(stat -c "%G" /etc/cron.allow)" != "root" ]; then echo "FAIL"; exit 1; fi
echo "PASS"; exit 0

Remediation

Set the group owner on the "/etc/cron.allow" file to root with the following command:

# chgrp root /etc/cron.allow