The admission control plugin NodeRestriction is not set misconfiguration detected in code

Rule Details

Cortex AppSec Rule ID	APPSEC_K8S_85
Category - Subcategory	Kubernetes - Native Security Controls
Provider	OTHER
Severity	MEDIUM
Framework	Helm, Kubernetes, Kustomize

Impact

Limit the Node and Pod objects that a kubelet could modify. Using the NodeRestriction plug-in ensures that the kubelet is restricted to the Node and Pod objects that it could modify as defined. Such kubelets will only be allowed to modify their own Node API object, and only modify Pod API objects that are bound to their node.

How to Fix

Kind: Pod [source,go]

{ "apiVersion: v1 kind: Pod metadata: creationTimestamp: null labels: component: kube-apiserver tier: control-plane name: kube-apiserver namespace: kube-system spec: containers:

• command:
• • kube-apiserver
• • --enable-admission-plugins=NodeRestriction image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0 ...", }

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