IngressNightmare-POCs : Understanding The Vulnerability Exploitation Flow

The “IngressNightmare” vulnerabilities, disclosed in March 2025, represent a critical set of security issues affecting the NGINX Ingress Controller for Kubernetes.

These vulnerabilities, including CVE-2025-24513, CVE-2025-24514, CVE-2025-1097, CVE-2025-1098, and CVE-2025-1974, pose significant risks to Kubernetes environments by enabling unauthenticated remote code execution (RCE) and potential cluster takeover.

Overview Of IngressNightmare Vulnerabilities

• CVE-2025-24513: Auth secret file path traversal vulnerability (Medium).
• CVE-2025-24514: Configuration injection via unsanitized auth-url annotation (High).
• CVE-2025-1097: Configuration injection via unsanitized auth-tls-match-cn annotation (High).
• CVE-2025-1098: Configuration injection via unsanitized mirror annotations (High).
• CVE-2025-1974: Unauthenticated RCE in the admission controller (Critical, CVSS score of 9.8).

Function Of IngressNightmare-POCs

The Proof-of-Concepts (POCs) for IngressNightmare are designed to demonstrate the exploit flow and vulnerability prerequisites.

These POCs were created before the official technical details were released by Wiz and are intended to help understand how the vulnerabilities can be exploited, rather than providing full-fledged exploits.

Key Features Of IngressNightmare-POCs

1. Exploitation Flow: The POCs illustrate how an attacker can inject malicious NGINX configurations to exploit vulnerabilities like CVE-2025-1097, CVE-2025-1098, CVE-2025-24514, and CVE-2025-1974.
2. Vulnerability Prerequisites: They highlight the conditions necessary for successful exploitation, such as access to the Kubernetes API server and permission to create or update Ingress objects.
3. Cluster Impact: The POCs demonstrate how these vulnerabilities can lead to unauthorized access to cluster secrets and potentially allow complete cluster takeover when combined with CVE-2025-1974.

Tools And Resources

• Shodan Scan: Useful for identifying exposed ingress controllers that might be vulnerable.
• Patch Analysis: Resources like the ShakeyLabs blog provide insights into patching and mitigating these vulnerabilities.

The IngressNightmare-POCs serve as valuable tools for understanding and mitigating the critical vulnerabilities in the NGINX Ingress Controller.

By demonstrating the exploit flow and highlighting vulnerability prerequisites, these POCs help organizations assess their risk and implement necessary security measures to protect their Kubernetes environments.