> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/appsec-rules/iac-security/networking/appsec-k8s-113.md).

# The --bind-address argument for controller managers is not set to 127.0.0.1 misconfiguration detecte

## Rule Details

|                        |                                       |
| ---------------------- | ------------------------------------- |
| Cortex AppSec Rule ID  | APPSEC\_K8S\_113                      |
| Category - Subcategory | Kubernetes - Native Security Controls |
| Provider               | OTHER                                 |
| Severity               | HIGH                                  |
| Framework              | Helm, Kubernetes, Kustomize           |

## Impact

Do not bind the Controller Manager service to non-loopback insecure addresses. The Controller Manager API service which runs on port 10252/TCP by default is used for health and metrics information and is available without authentication or encryption. As such it should only be bound to a localhost interface, to minimize the cluster's attack surface

## 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-controller-manager
* * \--bind-address=127.0.0.1 image: gcr.io/google\_containers/kube-apiserver-amd64:v1.6.0", }

***


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