SV-242465r961863: The Kubernetes API Server audit log path must be set. | Kubernetes STIG SCAP Benchmark

Loading benchmark…

Assessment Title

Rule Text

The Kubernetes API Server audit log path must be set.

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. Audit logs are necessary to provide evidence in the case the Kubernetes API Server is compromised requiring Cyber Security Investigation. To record events in the audit log the log path value must be set.

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-log-path * 

If the setting audit-log-path is not set in the Kubernetes API Server manifest file or it is not set to a valid path, 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:242465
# The Kubernetes API Server audit log path must be set.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# kube-apiserver has audit-log-path and has a vlaue assigned to it
# textfilecontent54_object (textfilecontent54_test)
test_1() {
  grep -Pq '^(?i)[ -]*audit-log-path=(\S+)' '/etc/kubernetes/manifests/kube-apiserver.yaml' &>/dev/null
}
# The path assigned to audit-log-path is valid path
# file_object (file_test)
test_2() {
  stat -c '%U %u %G %g %a %s'  &>/dev/null
}

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
# DISA STIG / SCAP compliance check: The Kubernetes API Server audit log path must be set

API_SERVER_MANIFEST="/etc/kubernetes/manifests/kube-apiserver.yaml"
AUDIT_LOG_PATH_PATTERN="^(?i)[ -]*audit-log-path=(\\S+)"

if [ ! -f "$API_SERVER_MANIFEST" ]; then
  echo "PASS"
  exit 0
fi

audit_log_path=$(grep "$AUDIT_LOG_PATH_PATTERN" "$API_SERVER_MANIFEST" | sed 's/.*=\(.*\)/\1/')
if [ -z "$audit_log_path" ]; then
  echo "FAIL"
  exit 1
fi

if [ ! -w "$(dirname "$audit_log_path")" ]; then
  echo "FAIL"
  exit 1
fi

echo "PASS"
exit 0

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 valid location.