M-112_privilege_escalation.yml

# Copyright 2023 Undistro Authors
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# Licensed under the Apache License, Version 2.0 (the "License");
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# https://kubernetes.io/docs/concepts/security/pod-security-standards/#restricted
# https://github.com/kubernetes/kubernetes/blob/master/staging/src/k8s.io/pod-security-admission/policy/check_allowPrivilegeEscalation.go
# https://github.com/kubernetes/kubernetes/blob/master/staging/src/k8s.io/pod-security-admission/policy/check_allowPrivilegeEscalation_test.go
id: M-112
slug: privilege-escalation
severity: Medium
message: "Allowed privilege escalation"
match:
  resources:
    - group: ""
      version: v1
      resource: pods
    - group: apps
      version: v1
      resource: deployments
    - group: apps
      version: v1
      resource: daemonsets
    - group: apps
      version: v1
      resource: statefulsets
    - group: apps
      version: v1
      resource: replicasets
    - group: batch
      version: v1
      resource: cronjobs
    - group: batch
      version: v1
      resource: jobs
variables:
  - name: isWindows
    expression: podSpec.?os.?name.orValue("") == "windows"
validations:
  - expression: >
      variables.isWindows || allContainers.all(c, c.?securityContext.?allowPrivilegeEscalation.orValue(true) == false)