# Cis Oke V150 4.1.6

> Ensure that Service Account Tokens are only mounted where necessary (Automated)

- Skill: `cyberstrikeus/cis-oke-v150-4-1-6` (Agent Skill)
- Install (CLI): `npx skillmds@latest add cyberstrikeus/cis-oke-v150-4-1-6`
- Raw SKILL.md: https://api.skillmd.com/api/skills/cyberstrikeus/cis-oke-v150-4-1-6/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: DevOps & Infra
- Author: cyberstrikeus (https://skillmd.com/u/cyberstrikeus)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/cyberstrikeus/cis-oke-v150-4-1-6

---


# 4.1.6 Ensure that Service Account Tokens are only mounted where necessary (Automated)

## Profile Applicability

- Level 1

## Description

Service accounts tokens should not be mounted in pods except where the workload running in the pod explicitly needs to communicate with the API server.

## Rationale

Mounting service account tokens inside pods can provide an avenue for privilege escalation attacks where an attacker is able to compromise a single pod in the cluster.

Avoiding mounting these tokens removes this attack avenue.

## Impact

Pods mounted without service account tokens will not be able to communicate with the API server, except where the resource is available to unauthenticated principals.

## Audit Procedure

Review pod and service account objects in the cluster and ensure that the option below is set, unless the resource explicitly requires this access.

```yaml
automountServiceAccountToken: false
```

Check for automountServiceAccountToken using:

```bash
export SERVICE_ACCOUNT=<service account name>
kubectl get serviceaccounts/$SERVICE_ACCOUNT -o yaml

export POD=<pod name>
kubectl get pods/$POD -o yaml
```

## Remediation

Modify the definition of pods and service accounts which do not need to mount service account tokens to disable it.

## Default Value

By default, all pods get a service account token mounted in them.

## References

1. [https://kubernetes.io/docs/tasks/configure-pod-container/configure-service-account/](https://kubernetes.io/docs/tasks/configure-pod-container/configure-service-account/)

## CIS Controls

| Controls Version | Control                                                   | IG 1 | IG 2 | IG 3 |
| ---------------- | --------------------------------------------------------- | ---- | ---- | ---- |
| v8               | 4.1 Establish and Maintain a Secure Configuration Process | X    | X    | X    |
| v7               | 5.1 Establish Secure Configurations                       | X    | X    | X    |

## MITRE ATT&CK Mappings

| Techniques / Sub-techniques | Tactics | Mitigations |
| --------------------------- | ------- | ----------- |
| T1528, T1555                | TA0006  | M1026       |

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**Profile:** Level 1