SV-274024r1190697: Amazon Linux 2023 must have the Advanced Intrusion Detection Environment (AIDE) package installed. | Amazon Linux 2023 STIG SCAP Benchmark

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Assessment Title

Rule Text

Amazon Linux 2023 must have the Advanced Intrusion Detection Environment (AIDE) package installed.

Description

Discussion Text

If security functions are not verified, they may not operate correctly and the failure may go unnoticed. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Security functionality includes, but is not limited to, establishing system accounts, configuring access authorizations (i.e., permissions, privileges), setting events to be audited, and setting intrusion detection parameters. Satisfies: SRG-OS-000363-GPOS-00150, SRG-OS-000445-GPOS-00199, SRG-OS-000358-GPOS-00145

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

IA Controls

NIST SP 800-53

Not mappedCCI-001744Not mappedCCI-002696Not mappedCCI-001889

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:274024
# Amazon Linux 2023 must have the Advanced Intrusion Detection Environment (AIDE) package installed.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# aide package is installed
# rpminfo_object (rpminfo_test)
test_1() {
  rpm -q --quiet 'aide' &>/dev/null
}
# /var/lib/aide/aide.db.gz exists and is not empty
# file_object (file_test)
test_2() {
  [ "$(stat -c '%s' '/var/lib/aide/aide.db.gz')" -gt 0 ]
}

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.amzlx23os:def:274024

if ! command -v rpm &> /dev/null; then
  echo "FAIL"
  exit 1
fi

if rpm -qa | grep -q aide; then
  if [ -s /var/lib/aide/aide.db.gz ]; then
    echo "PASS"
    exit 0
  else
    echo "FAIL"
    exit 1
  fi
else
  echo "FAIL"
  exit 1
fi

Remediation

Configure Amazon Linux 2023 to have the AIDE package installed.

Install AIDE:

$ sudo dnf install -y aide

Initialize AIDE:
 
$ sudo /usr/sbin/aide --init

The new database must be renamed to be read by AIDE:

$ sudo mv /var/lib/aide/aide.db.new.gz /var/lib/aide/aide.db.gz

Perform a manual check:

$ sudo /usr/sbin/aide --check
Example output:

2023-06-05 10:16:08 -0600 (AIDE 0.16)
AIDE found NO differences between database and filesystem. Looks okay!!