Shares the Host IPC Namespace

apiVersion: admissionregistration.k8s.io/v1
kind: ValidatingAdmissionPolicy
metadata:
  name: pod-hostipc
  annotations:
    kubeapt.io/uuid: "29c502b6-a8aa-4cd7-a309-482332dd9a52"
    security.kubeapt.io/displayName: "Shares the Host IPC Namespace"
    security.kubeapt.io/description: "Sharing the host IPC namespace exposes the node shared memory segments, semaphores and message queues to the container, letting it read in-memory data and tamper with host processes and other pods that share it."
    security.kubeapt.io/resource: "Pods"
    security.kubeapt.io/severity: "High"
    security.kubeapt.io/remediation: "Remove spec.hostIPC or set it to false. Field: spec.hostIPC."
    security.kubeapt.io/product: "Kubernetes"
spec:
  failurePolicy: Fail
  matchConstraints:
    resourceRules:
    - apiGroups:
      - ''
      apiVersions:
      - v1
      operations:
      - CREATE
      - UPDATE
      resources:
      - pods
  validations:
  - expression: |
      !has(object.spec.hostIPC) || object.spec.hostIPC == false
    message: |
      Using hostIPC is disallowed. spec.hostIPC must be undefined or set to false.