SV-230293r1017104: RHEL 8 must use a separate file system for /var/log. | Red Hat Enterprise Linux 8 STIG SCAP Benchmark

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Assessment Title

Rule Text

RHEL 8 must use a separate file system for /var/log.

Description

Discussion Text

The use of separate file systems for different paths can protect the system from failures resulting from a file system becoming full or failing.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000366

References

DPMS Target Red Hat Enterprise Linux 8 DISA DPMS Target Red Hat Enterprise Linux 8 2921

Checks

DISA STIG (Manual Reference)

Verify that a separate file system has been created for "/var/log".

Check that a file system has been created for "/var/log" with the following command:

     $ sudo grep /var/log /etc/fstab

     /dev/mapper/...   /var/log   xfs   defaults,nodev,noexec,nosuid 0 0

If a separate entry for "/var/log" is not in use, 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.rhel8os:def:230293
# RHEL 8 must use a separate file system for /var/log.
# 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/log.
# partition_object (partition_test)
test_1() {
  findmnt -n -o FSTYPE,OPTIONS /var/log &>/dev/null
}
# There is a separate file system configured for /var/log.
# textfilecontent54_object (textfilecontent54_test)
test_2() {
  grep -Pq '^[^# \t]+\s+/var/log\s+' '/etc/fstab' &>/dev/null
}

if ( test_1 && test_2 ); then
  echo "PASS"
else
  echo "FAIL"
fi

Remediation

Migrate the "/var/log" path onto a separate file system.