# Cis Aks V170 4.6.3

> Cis Aks V170 4.6.3 is an Agent Skill for devops & security published in the CyberStrikeus/CyberStrike repository on GitHub: a SKILL.md instruction file an AI agent can load to do this task.

The default namespace should not be used (Automated)

- Skill name: `cis-aks-v170-4.6.3`
- Category: [DevOps & Security](https://www.openparable.com/skill/devops-security/1)
- Source: https://github.com/CyberStrikeus/CyberStrike/blob/HEAD/.cyberstrike/skill/CIS_benchmarks/Server_Software/Kubernetes/CIS_Azure_Kubernetes_Service_AKS_Benchmark_v1.7.0/cis-aks-v170-4.6.3/SKILL.md
- Repository: CyberStrikeus/CyberStrike (1,211 GitHub stars when collected)

## SKILL.md

# 4.6.3 The default namespace should not be used (Automated)

## Profile Applicability

- Level 2

## Description

Kubernetes provides a default namespace, where objects are placed if no namespace is specified for them. Placing objects in this namespace makes application of RBAC and other controls more difficult.

## Rationale

Resources in a Kubernetes cluster should be segregated by namespace, to allow for security controls to be applied at that level and to make it easier to manage resources.

## Audit Procedure

Run the following command to list objects in the default namespace:

```bash
kubectl get all -n default
```

The only entries there should be system-managed resources such as the `kubernetes` service.

## Remediation

Ensure that namespaces are created to allow for appropriate segregation of Kubernetes resources and that all new resources are created in a specific namespace.

```bash
kubectl create namespace <namespace_name>
```

## Default Value

Unless a namespace is specified, all Kubernetes resources are created in the default namespace.

## References

1. https://kubernetes.io/docs/concepts/overview/working-with-objects/namespaces/

## CIS Controls

| Controls Version | Control                                            | IG 1 | IG 2 | IG 3 |
| ---------------- | -------------------------------------------------- | ---- | ---- | ---- |
| v8               | 4.6 Securely Manage Enterprise Assets and Software | ●    | ●    | ●    |
| v7               | 14 Controlled Access Based on the Need to Know     |      |      |      |

## Profile Applicability

- Level 2

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Source: https://www.openparable.com/skill/devops-security/cis-aks-v170-4-6-3 (OpenParable). Cite the canonical URL above.