SV-242402r960888: The Kubernetes API Server must have an audit log path set. | Kubernetes STIG SCAP Benchmark

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Assessment Title

Rule Text

The Kubernetes API Server must have an audit log path set.

Description

Discussion Text

When Kubernetes is started, components and user services are started for auditing startup events, and events for components and services, it is important that auditing begin on startup. Within Kubernetes, audit data for all components is generated by the API server. To enable auditing to begin, an audit policy must be defined for the events and the information to be stored with each event. It is also necessary to give a secure location where the audit logs are to be stored. If an audit log path is not specified, all audit data is sent to studio.

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

IA Controls

NIST SP 800-53

Not mappedCCI-001464

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-log-path * 

If the "--audit-log-path" is not set, 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:242402
# The Kubernetes API Server must have an audit log path set.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# Verifies  audit-log-path is set to a value other than 0 in /etc/kubernetes/manifests/kubi-apiserver.yaml
# textfilecontent54_object (textfilecontent54_test)
test_1() {
  grep -rqP --include='*' '^(?i)[ -]*audit-log-path=[\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:242402


if [ ! -f "/etc/kubernetes/manifests/kube-apiserver.yaml" ]; then echo "PASS"; exit 0; fi
if grep -qE "^(?i)[ -]*audit-log-path=[\\S]+[ ]*$" /etc/kubernetes/manifests/kube-apiserver.yaml; then echo "PASS"; 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 value of "--audit-log-path" to a secure location for the audit logs to be written.

Note: If the API server is running as a Pod, then the manifest will also need to be updated to mount the host system filesystem where the audit log file is to be written.