Kubernetes Pod Created with hostNetwork

kubernetes

Classification:

attack

Tactic:

TA0004-privilege-escalation

Technique:

T1068-exploitation-for-privilege-escalation

Set up the kubernetes integration.

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Goal

Detect when a pod is attached to the host network.

Strategy

This rule monitors when a create (@http.method:create) action occurs for a pod (@objectRef.resource:pods) with the host network @requestObject.spec.hostNetwork:true attached.

Attaching the hostNetwork permits a pod to access the node’s network adapter allowing a pod to listen to all network traffic for all pods on the node and communicate with other pods on the network namespace.

Triage and response

Determine if the pod needs hostNetwork access.

Changelog

  • 7 May 2024 - Updated detection query to include logs from Azure Kubernetes Service.
  • 22 July 2024 - Updated detection query to include logs from Google Kubernetes Engine.