services / Google Cloud / Nodes

Nodes are physical or virtual machines that serve as a worker in the cluster. Nodes provide the underlying pool of CPU, memory, storage, and network connectivity resources for running containers and other tasks assigned by the control plane.

Nodes can be configured in multiple ways, and the configuration has a significant impact on Node security. In general, nodes should not be publicly accessible, block ssh access if possible (already enforced in AutoPilot mode), isolation between containers running on the same node, isolation between the host operating system on the node and the workload running inside a container, performing timely upgrades of the node OS, Kubernetes, and the container runtime.

container.​nodes.​get

The response payload contains container image IDs stored on the nodes, as well as IP addresses, Pod CIDR ranges, health check statuses, and other metadata.

Risks

1. Infrastructure discovery (LOW)
2. Network discovery (LOW)

Scope: CRITICAL

This privilege may grant access to sensitive data from a significant fraction of organizational functions, allow interruption of critical organizational services, or its exploit could lead to significant privilege escalation.

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