CDRGoat Goes Kubernetes: Same Fundamentals, a Much Faster Clock

AI-assisted attackers are accelerating cloud intrusions from hours to minutes, increasing the importance of promptly applying established controls such as least-privilege RBAC, network segmentation, and kernel patching rather than replacing them. The piece highlights an accumulation of Kubernetes and container security issues from 2025–26, including the nodes/proxy authorization bypass, ingress-nginx RCE flaws, runc race conditions, Linux kernel and eBPF rootkits, etcd authorization bugs, page-cache poisoning vulnerabilities, and worms targeting exposed Kubernetes APIs, alongside common misconfigurations involving RBAC, IAM, networking, and leaked credentials. It introduces expanded open-source CDRGoat Kubernetes scenarios for EKS, GKE, AKS, and some self-managed environments, which simulate automated attack chains such as container escape to kernel rootkit installation, SSRF-based privilege escalation, cloud takeover through stolen kubeconfigs, persistent cryptomining, lateral movement, direct etcd injection, and cross-pod page-cache attacks. These scenarios are intended to help security operations teams test detection systems, SIEMs, and agentic triage tools against realistic Kubernetes incidents, but are explicitly limited to isolated, non-production educational environments.

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