SV-242461r961863: Kubernetes API Server audit logs must be enabled. | Kubernetes STIG SCAP Benchmark

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Assessment Title

Rule Text

Kubernetes API Server audit logs must be enabled.

Description

Discussion Text

Kubernetes API Server validates and configures pods and services for the API object. The REST operation provides frontend functionality to the cluster share state. Enabling audit logs provides a way to monitor and identify security risk events or misuse of information. Audit logs are necessary to provide evidence in the case the Kubernetes API Server is compromised requiring a Cyber Security Investigation.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000366

References

DPMS Target Kubernetes DISA DPMS Target Kubernetes 5376

Checks

DISA STIG (Manual Reference)

Change to the /etc/kubernetes/manifests directory on the Kubernetes Control Plane. Run the command:
grep -i audit-policy-file * 

If the setting "audit-policy-file" is not set or is found in the Kubernetes API manifest file without valid content, 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.kubernetes:def:242461
# Kubernetes API Server audit logs must be enabled.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# Verifies  audit-policy-file is set to a value in /etc/kubernetes/manifests/*
# textfilecontent54_object (textfilecontent54_test)
test_1() {
  grep -rqP --include='*' '^(?i)[ -]*audit-policy-file=([\S]+)[ ]*$' '/etc/kubernetes/manifests' &>/dev/null
}

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 Definition: oval:mil.disa.stig.kubernetes:def:242461


if [ -n "$(grep -wE '^(?i)[ -]*audit-policy-file=([\\S]+)[ ]*$' /etc/kubernetes/manifests/*.yaml | grep -q '/etc/kubernetes/manifests/' && echo "PASS")" ]; then
    exit 0
else
    echo "FAIL"
    exit 1
fi

Remediation

Edit the Kubernetes API Server manifest file in the /etc/kubernetes/manifests directory on the Kubernetes Control Plane. Set the argument "--audit-policy-file" to "log file directory".