A security issue was discovered in kube-apiserver that allows an aggregated API server to redirect client traffic to any URL. This could lead to the client performing unexpected actions as well as forwarding the clients API server credentials to third parties.
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Apiserver | Kubernetes | * | 1.21.14 (including) |
| Apiserver | Kubernetes | 1.22.0 (including) | 1.22.14 (excluding) |
| Apiserver | Kubernetes | 1.23.0 (including) | 1.23.11 (excluding) |
| Apiserver | Kubernetes | 1.24.0 (including) | 1.24.5 (excluding) |
| Apiserver | Kubernetes | 1.25.0 (including) | 1.25.0 (including) |