The --make-iptables-util-chains argument is not set to True misconfiguration detected in code

Rule Details

Cortex AppSec Rule ID	APPSEC_K8S_145
Category - Subcategory	Kubernetes - Native Security Controls
Provider	OTHER
Severity	LOW
Framework	Helm, Kubernetes, Kustomize

Impact

Allow Kubelet to manage iptables. Kubelets can automatically manage the required changes to iptables based on how you choose your networking options for the pods. It is recommended to let kubelets manage the changes to iptables. This ensures that the iptables configuration remains in sync with pods networking configuration. Manually configuring iptables with dynamic pod network configuration changes might hamper the communication between pods/containers and to the outside world. You might have iptables rules too restrictive or too open.

How to Fix

Resource: Pod [source,go]

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

• command:
• • kubelet
• • --make-iptables-util-chains=true image: gcr.io/google_containers/kubelet-amd64:v1.6.0 ...", }

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