Kubernetes Chaos: IngressNightmare Vulnerabilities Threaten Major Clusters
Kubernetes has become the de facto tool for container orchestration, but it’s not all smooth sailing. IngressNightmare, a series of vulnerabilities in the Ingress NGINX Controller, could let attackers take over clusters. If you’ve exposed your admission controller, patch it now, or face the wrath of unauthorized directives!
Hot Take:
In the latest episode of “Hackers Gone Wild,” Kubernetes clusters are shaking in their digital boots as the Ingress NGINX Controller decides to join the vulnerability party. Who knew being an entry point for traffic could have such dramatic consequences? It’s like leaving your front door open during a zombie apocalypse — not recommended!
Key Points:
- Four critical vulnerabilities were found in the Ingress NGINX Controller affecting 41% of internet-facing Kubernetes clusters.
- Three vulnerabilities allow injection of arbitrary NGINX directives, which can be chained with a fourth to enable remote code execution.
- The “IngressNightmare” attack vector discovered by Wiz has a CVSS severity score of 9.8.
- Organizations are advised to patch to the latest NGINX Controller versions or restrict admission controller access.
- Exposed admission controllers pose a significant risk due to inadequate field validation and potential bypassing of Kubernetes API authentication.
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