k8s-seccomp-profile-set: Set appropriate seccomp profile

id: k8s-seccomp-profile-set

info:
  name: Set appropriate seccomp profile
  author: princechaddha
  severity: medium
  description: Checks if the seccomp profile is set to docker/default or runtime/default in Kubernetes Deployments.
  impact: |
    Using a default seccomp profile helps in reducing the attack surface of the container by limiting the syscalls containers can make, which can prevent certain types of exploits.
  remediation: |
    Ensure that all containers in Kubernetes Deployments have a seccomp profile of docker/default or runtime/default set in their security contexts.
  reference:
    - https://kubernetes.io/docs/tutorials/clusters/seccomp/
  tags: cloud,devops,kubernetes,devsecops,containers,k8s,k8s-cluster-security

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

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

javascript:
  - code: |
        deployment = JSON.parse(template.deployment);
        deployment.spec.template.spec.containers.forEach(container => {
          if (container.securityContext && container.securityContext.seccompProfile &&
              (container.securityContext.seccompProfile.type === 'RuntimeDefault' || container.securityContext.seccompProfile.type === 'DockerDefault')) {
            // No action needed, configured properly
          } else {
            let result = (`Deployment '${deployment.metadata.name}' in namespace '${deployment.metadata.namespace}' does not have an appropriate seccomp profile set.`);
            Export(result);
          }
        });

    extractors:
      - type: dsl
        dsl:
          - response
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