The Kubernetes kube-controller-manager in versions v1.0-1.14, versions prior to v1.15.12, v1.16.9, v1.17.5, and version v1.18.0 are vulnerable to a Server Side Request Forgery (SSRF) that allows certain authorized users to leak up to 500 bytes of arbitrary information from unprotected endpoints within the masters host network (such as link-local or loopback services).
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 |
|---|---|---|---|
| Kubernetes | Kubernetes | * | 1.15.11 (excluding) |
| Kubernetes | Kubernetes | 1.16.0 (including) | 1.16.9 (excluding) |
| Kubernetes | Kubernetes | 1.17.0 (including) | 1.17.5 (excluding) |
| Kubernetes | Kubernetes | 1.18.0 (including) | 1.18.0 (including) |