k8s-containers-share-host-ipc: Containers sharing host IPC namespace

id: k8s-containers-share-host-ipc

info:
  name: Containers sharing host IPC namespace
  author: princechaddha
  severity: critical
  description: Checks if any containers in Kubernetes Pods are configured to share the host's IPC namespace, which can lead to security risks.
  impact: |
    Sharing the host's IPC namespace allows containers to access data across all containers on the same host, posing potential security risks.
  remediation: Ensure that no container in Kubernetes Pods is set to share the host IPC namespace. Configure 'spec.hostIPC' to 'false' for all pods to isolate IPC namespaces.
  reference:
    - https://kubernetes.io/docs/tasks/configure-pod-container/security-context/
  tags: cloud,devops,kubernetes,k8s,devsecops,pods,k8s-cluster-security

flow: |
  code(1);
  for (let pod of template.items) {
    set("pod",pod)
    javascript(1);
  }

self-contained: true
code:
  - engine:
      - sh
      - bash
    source: kubectl get pods --all-namespaces --output=json
    extractors:
      - type: json
        name: items
        internal: true
        json:
          - '.items[]'

javascript:
  - code: |
        pod = JSON.parse(template.pod);
        if (pod.spec.hostIPC) {
          let result = (`Pod '${pod.metadata.name}' in namespace '${pod.metadata.namespace}' is configured to share the host IPC namespace.`);
          Export(result);
        }

    extractors:
      - type: dsl
        dsl:
          - response
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