# Cis Aks V180 4.1.8

> Cis Aks V180 4.1.8 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.

Minimize access to create persistent volumes (Manual)

- Skill name: `cis-aks-v180-4.1.8`
- 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_v1.8.0/cis-aks-v180-4.1.8/SKILL.md
- Repository: CyberStrikeus/CyberStrike (1,211 GitHub stars when collected)

## SKILL.md

# 4.1.8 Minimize access to create persistent volumes (Manual)

## Profile Applicability

- Level 1

## Description

The ability to create persistent volumes in a cluster can provide an opportunity for privilege escalation, via the creation of `hostPath` volumes. As persistent volumes are not covered by Pod Security Admission, a user with access to create persistent volumes may be able to get access to sensitive files from the underlying host even where restrictive Pod Security Admission policies are in place.

## Rationale

The ability to create persistent volumes in a cluster opens up possibilities for privilege escalation and should be restricted, where possible.

## Audit

Review the users who have create access to `PersistentVolume` objects in the Kubernetes API.

## Remediation

Where possible, remove `create` access to `PersistentVolume` objects in the cluster.

## References

1. [https://kubernetes.io/docs/concepts/security/rbac-good-practices/#persistent-volume-creation](https://kubernetes.io/docs/concepts/security/rbac-good-practices/#persistent-volume-creation)

## CIS Controls

| Controls Version | Control                                           | IG 1 | IG 2 | IG 3 |
| ---------------- | ------------------------------------------------- | ---- | ---- | ---- |
| v8               | 6.8 Define and Maintain Role-Based Access Control |      |      | x    |

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Source: https://www.openparable.com/skill/devops-security/cis-aks-v180-4-1-8 (OpenParable). Cite the canonical URL above.