SV-280939r1184729: RHEL 10 must use a separate file system for "/var". | Red Hat Enterprise Linux 10 STIG SCAP Benchmark

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Assessment Title

Rule Text

RHEL 10 must use a separate file system for "/var".

Description

Discussion Text

Ensuring that "/var" is mounted on its own partition enables the setting of more restrictive mount options. This helps protect system services such as daemons or other programs that use it. It is not uncommon for the "/var" directory to contain world-writable directories installed by other software packages.

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

IA Controls

NIST SP 800-53

Not mappedCCI-002385

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:280939
# RHEL 10 must use a separate file system for "/var".
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# There is a separate file system for /var
# partition_object (partition_test)
test_1() {
  findmnt -n -o FSTYPE,OPTIONS /var &>/dev/null
}
# There is a separate file system configured for /var
# textfilecontent54_object (textfilecontent54_test)
test_2() {
  grep -Pq '^[^# \t]+\s+/var\s+' '/etc/fstab' &>/dev/null
}

if ( test_1 && test_2 ); 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:280939

if [ -f "/etc/fstab" ] && grep -q "^[^# \\t]+\\s+/var\\s+" /etc/fstab && mountpoint -q /var; then
  echo "PASS"
else
  echo "FAIL"
fi
exit 0

Remediation

Configure RHEL 10 to use a separate file system for the "/var" directory by migrating the "/var" path onto a separate file system.