Kubernetes: Kubelet resource exhaustion attack via metric label cardinality explosion from unauthenticated requests

Report Submission Form Summary: Malicious clients can potentially DOS a kubelet by sending a high amount of specially crafted requests to the kubelet's HTTP server. For each request the kubelet updates/sets 3 metrics: - kubelethttprequeststotal Counter - kubelethttprequestsdurationseconds Histogr...