SV-274067r1120653: Amazon Linux 2023 must allocate audit record storage capacity to store at least one week's worth of audit records, when audit records are not immediately sent to a central audit record storage facility. | Amazon Linux 2023 STIG SCAP Benchmark

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Assessment Title

Rule Text

Amazon Linux 2023 must allocate audit record storage capacity to store at least one week's worth of audit records, when audit records are not immediately sent to a central audit record storage facility.

Description

Discussion Text

To ensure operating systems have a sufficient storage capacity in which to write the audit logs, operating systems must be able to allocate audit record storage capacity.

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

IA Controls

NIST SP 800-53

Not mappedCCI-001849

References

DPMS Target Amazon Linux 2023 DISA DPMS Target Amazon Linux 2023 5700

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.amzlx23os:def:274067
# Amazon Linux 2023 must allocate audit record storage capacity to store at least one week's worth of audit records, when audit records are not immediately sent to a central audit record storage facility.
# 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:
#   - variable_object (variable_test) -- Audit file system total space >= 10GiB: no extractor for field "value"

# Audit file system exists
# partition_object (partition_test)
test_1() {
  findmnt -n -o FSTYPE,OPTIONS  &>/dev/null
}

if test_1; 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:mil.disa.stig.amzlx23os:def:274067

if [ ! -f "/etc/audit/auditd.conf" ]; then echo "PASS"; exit 0; fi
if ! grep -q "^\\s*log_file\\s*=\\s*(\\S+)/\\S+\\s*$" /etc/audit/auditd.conf; then echo "PASS"; exit 0; fi
if [ ! -s "/var/log/audit" ]; then echo "PASS"; exit 0; fi
if df -h /var/log/audit | awk '{print $2}' | sed's/%//g' | tr -d 'MGB' | tr -s ''| sed's/K//g' | bc -l | grep -q "^[0-9]\{1,\}\([0-9]\{1,\}\)?G[>>=]10"; then echo "PASS"; exit 0; fi
echo "FAIL"; exit 1

Remediation

Configure Amazon Linux 2023 to provide adequate storage for at least one-week of audit logs when audit records are not immediately sent to a central audit record storage facility.

If the storage partition is not large enough for at least one week of audit logs, then either:

1. Resize the partition to ensure there is enough storage capacity.
2. Create a new partition for the audit logs.