Kube-proxy on Windows can unintentionally forward traffic to local processes listening on the same port (“spec.ports[*].port”) as a LoadBalancer Service when the LoadBalancer controller does not set the “status.loadBalancer.ingress[].ip” field. Clusters where the LoadBalancer controller sets the “status.loadBalancer.ingress[].ip” field are unaffected.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Kubernetes | Kubernetes | 1.18.0 (including) | 1.18.18 (excluding) |
| Kubernetes | Kubernetes | 1.19.0 (including) | 1.19.10 (excluding) |
| Kubernetes | Kubernetes | 1.20.0 (including) | 1.20.6 (excluding) |