Compliance Guide

Kubernetes STIG Compliance Guide

Complete reference for implementing DISA Security Technical Implementation Guides (STIGs) on Kubernetes. From assessment to continuous monitoring, everything you need for federal Kubernetes compliance.

91

Kubernetes STIG Controls

V1R11

Current STIG Version

4-8

Weeks to Compliance

100%

US-Based Team

Overview

What are STIGs?

Security Technical Implementation Guides (STIGs) are configuration standards developed by the Defense Information Systems Agency (DISA) for securing Department of Defense (DoD) IT systems. STIGs provide detailed, prescriptive guidance for hardening systems against cyber threats.

For Kubernetes deployments in federal environments, STIG compliance is not optional — it's mandatory. Whether you're running on-premises clusters for classified workloads or managed Kubernetes in AWS GovCloud, STIGs define the security baseline your platform must meet.

THNKBIG specializes in STIG-compliant Kubernetes deployments for federal agencies and defense contractors across Washington DC, Texas, California, and nationwide. Our US-based team has implemented STIG-hardened clusters for IL-4, IL-5, and Secret environments.

Reference

Kubernetes-Related STIGs

Multiple STIGs apply to Kubernetes deployments. Understanding which guides apply to your environment is the first step toward compliance.

Container Platform SRG

V2R1

89 controls

Security Requirements Guide for container platforms including Kubernetes, covering runtime security, orchestration, and container lifecycle management.

Key Controls

  • Container image signing and verification
  • Runtime security monitoring
  • Network segmentation and policies
  • Secrets management and encryption

Kubernetes STIG

V1R11

91 controls

DISA STIG specifically for Kubernetes deployments, covering API server hardening, etcd security, kubelet configuration, and cluster authentication.

Key Controls

  • API server audit logging enabled
  • etcd encryption at rest
  • RBAC enforcement
  • Pod security admission

RHEL 8 STIG

V1R14

350 controls

Required for Kubernetes nodes running RHEL 8. Covers OS-level hardening that forms the foundation for container security.

Key Controls

  • SELinux enforcing mode
  • FIPS 140-2 cryptographic modules
  • Audit logging configuration
  • SSH hardening

Amazon EKS STIG

V1R1

42 controls

STIG requirements specific to Amazon Elastic Kubernetes Service, covering managed control plane security and worker node configuration.

Key Controls

  • Control plane logging to CloudWatch
  • Secrets encryption with KMS
  • VPC CNI security groups
  • IAM roles for service accounts
Severity

STIG Finding Categories

STIG findings are categorized by severity. Understanding these categories helps prioritize remediation efforts.

CAT I High

Vulnerabilities that could directly result in loss of Confidentiality, Integrity, or Availability. Must be remediated immediately.

Examples

  • Anonymous API access enabled
  • etcd data unencrypted
  • Privileged containers allowed
CAT II Medium

Vulnerabilities that could lead to degradation of security controls. Must be remediated within 30 days.

Examples

  • Audit logging incomplete
  • RBAC overly permissive
  • Missing network policies
CAT III Low

Vulnerabilities that could degrade security measures. Should be remediated as part of ongoing maintenance.

Examples

  • Resource limits not set
  • Labels/annotations missing
  • Documentation gaps
Implementation

STIG Implementation Roadmap

A typical STIG compliance journey for Kubernetes takes 4-8 weeks. Here's what to expect at each phase.

1

Assessment

1-2 weeks

Evaluate current Kubernetes configuration against STIG requirements. Identify gaps and prioritize remediation.

Run STIG compliance scanner (OpenSCAP, Anchore)
Document current control status
Identify CAT I findings for immediate remediation
Create remediation plan with timelines
2

Hardening

2-4 weeks

Implement STIG-compliant configurations across cluster components, nodes, and workloads.

Harden API server configuration
Enable etcd encryption at rest
Configure audit logging
Implement pod security admission
Apply network policies
3

Validation

1-2 weeks

Verify STIG compliance through automated scanning and manual review. Document exceptions.

Run compliance scans
Review scan results
Document POA&Ms for exceptions
Prepare assessment evidence
4

Continuous Monitoring

Ongoing

Maintain STIG compliance through automated monitoring, drift detection, and regular reassessment.

Implement policy-as-code (OPA/Gatekeeper)
Configure drift detection
Schedule quarterly assessments
Track STIG updates
FAQ

Frequently Asked Questions

A Security Technical Implementation Guide (STIG) is a configuration standard developed by DISA (Defense Information Systems Agency) for securing IT systems. For Kubernetes, STIGs provide specific hardening requirements that federal agencies and defense contractors must implement. Compliance is mandatory for DoD systems and often required for FedRAMP authorization.
Multiple STIGs apply to Kubernetes: the Kubernetes STIG (V1R11) covers the orchestration layer, the Container Platform SRG covers container runtime, and node-level STIGs (RHEL 8, Ubuntu) cover the underlying OS. For managed services, cloud-specific STIGs like the Amazon EKS STIG also apply.
Initial STIG compliance for a Kubernetes cluster typically takes 4-8 weeks depending on current state and cluster complexity. This includes assessment (1-2 weeks), hardening (2-4 weeks), and validation (1-2 weeks). Ongoing compliance requires continuous monitoring and quarterly reassessments.
Yes. AWS EKS, Azure AKS, and Google GKE can achieve STIG compliance, though with some caveats. Managed control planes handle certain STIG controls automatically, but customer responsibilities remain for worker nodes, workloads, and cluster configuration. The Amazon EKS STIG specifically addresses these shared responsibilities.
Key tools include: OpenSCAP for automated scanning, Anchore for container compliance, OPA/Gatekeeper for policy enforcement, Falco for runtime monitoring, and STIG Viewer for manual assessment. Many organizations also use Rancher Government Solutions or Red Hat OpenShift for pre-hardened distributions.
STIGs map to NIST 800-53 controls, which underpin FedRAMP, FISMA, and CMMC requirements. Achieving STIG compliance significantly accelerates these broader compliance efforts. STIGs also align with CIS Benchmarks, though STIGs are typically more stringent for federal requirements.
When a STIG control cannot be implemented, organizations document a Plan of Action & Milestones (POA&M) explaining the technical limitation, compensating controls, and remediation timeline. The Authorizing Official must approve all POA&Ms. Some requirements may qualify for waivers with proper justification.
Related

Related Resources

FedRAMP Kubernetes: Containers for Federal Workloads

How STIGs fit into the broader FedRAMP authorization process.

Zero-Trust Kubernetes: Network Policy From First Principles

Implement STIG network segmentation requirements with Kubernetes network policies.

Government & Federal Kubernetes Consulting

Our experience with IL-4, IL-5, and FedRAMP Kubernetes deployments.

Aerospace & Defense Kubernetes

ITAR-compliant Kubernetes platforms with STIG hardening.

SUSE Rancher Government Solutions

Pre-hardened Kubernetes distributions for federal environments.

Kubernetes Security Hub

Comprehensive security resources including compliance guidance.
STIG Compliance Services

Need Help with STIG Compliance?

Our US-based team specializes in STIG-compliant Kubernetes deployments for federal agencies and defense contractors. From assessment to ATO, we've helped organizations achieve compliance in 60 days or less.

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