cis-k8s-v200-3-2-1

name	cis-k8s-v200-3.2.1
description	Ensure that a minimal audit policy is created (Manual)
category	cis-k8s
version	2.0.0
author	cyberstrike-official
tags	["cis","kubernetes","control-plane-config","logging"]
cis_id	3.2.1
cis_benchmark	CIS Kubernetes Benchmark v2.0.0
tech_stack	["kubernetes"]
cwe_ids	[]
chains_with	[]
prerequisites	[]
severity_boost	{}

CIS Kubernetes Benchmark v2.0.0 - Control 3.2.1

Profile Applicability

• Level: 1 - Master Node

Description

Kubernetes can audit the details of requests made to the API server. The --audit-policy-file flag must be set for this logging to be enabled.

Rationale

Logging is an important detective control for all systems, to detect potential unauthorised access.

Impact

Audit logs will be created on the master nodes, which will consume disk space. Care should be taken to avoid generating too large volumes of log information as this could impact the available of the cluster nodes.

Audit Procedure

Run the following command on one of the cluster master nodes:

ps -ef | grep kube-apiserver

Verify that the --audit-policy-file is set. Review the contents of the file specified and ensure that it contains a valid audit policy.

Remediation

Create an audit policy file for your cluster.

Default Value

Unless the --audit-policy-file flag is specified, no auditing will be carried out.

References

1. https://kubernetes.io/docs/tasks/debug-application-cluster/audit/

CIS Controls

Controls Version	Control	IG 1	IG 2	IG 3
v8	8.2 Collect Audit Logs Collect audit logs. Ensure that logging, per the enterprise's audit log management process, has been enabled across enterprise assets.	●	●	●
v7	6.2 Activate audit logging Ensure that local logging has been enabled on all systems and networking devices.	●	●	●

Profile

Level 1 - Master Node (Manual)