yaml.kubernetes.security.privileged-container.privileged-container

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Container or pod is running in privileged mode. This grants the container the equivalent of root capabilities on the host machine. This can lead to container escapes, privilege escalation, and other security concerns. Remove the 'privileged' key to disable this capability.

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Defintion

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rules:
  - id: privileged-container
    pattern-either:
      - patterns:
          - pattern-inside: |
              containers:
                ...
          - pattern: |
              image: ...
              ...
              securityContext:
                ...
                privileged: true
      - patterns:
          - pattern-inside: |
              spec:
                ...
          - pattern-not-inside: |
              image: ...
              ...
          - pattern: |
              privileged: true
    message: Container or pod is running in privileged mode. This grants the
      container the equivalent of root capabilities on the host machine. This
      can lead to container escapes, privilege escalation, and other security
      concerns. Remove the 'privileged' key to disable this capability.
    metadata:
      cwe:
        - "CWE-250: Execution with Unnecessary Privileges"
      references:
        - https://kubernetes.io/docs/concepts/policy/pod-security-policy/#privileged
        - https://kubernetes.io/docs/tasks/configure-pod-container/security-context/
        - https://cheatsheetseries.owasp.org/cheatsheets/Docker_Security_Cheat_Sheet.html
      category: security
      technology:
        - kubernetes
      subcategory:
        - vuln
      likelihood: MEDIUM
      impact: MEDIUM
      confidence: MEDIUM
      license: Commons Clause License Condition v1.0[LGPL-2.1-only]
      vulnerability_class:
        - Improper Authorization
    languages:
      - yaml
    severity: WARNING

Examples

privileged-container.test.yaml

apiVersion: v1
kind: Pod
spec:
  # ruleid: privileged-container
  privileged: true
  containers:
    # ruleid: privileged-container
    - name: nginx
      image: nginx
      securityContext:
        privileged: true
    # ok: privileged-container
    - name: postgres
      image: postgres
    # ok: privileged-container
    - name: redis
      image: redis
      securityContext:
        privileged: false