51 lines
2.1 KiB
YAML
51 lines
2.1 KiB
YAML
id: minimize-added-capabilities
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info:
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name: Minimize container added capabilities
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author: princechaddha
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severity: high
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description: Checks for containers in Kubernetes Deployments with added capabilities beyond the default set, increasing security risks.
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impact: |
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Containers with additional capabilities are granted more privileges than necessary, potentially allowing them to bypass intended security restrictions. This increases the risk of exploitation and unauthorized access.
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remediation: |
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Ensure that no unnecessary capabilities are added to containers within Kubernetes Deployments. Use security contexts to define the minimum necessary privileges.
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reference:
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- https://kubernetes.io/docs/tasks/configure-pod-container/security-context/
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tags: cloud,devops,kubernetes,k8s,devsecops,deployments,k8s-cluster-security
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flow: |
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code(1);
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for (let deployment of template.items) {
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set("deployment", deployment)
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javascript(1);
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}
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self-contained: true
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code:
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- engine:
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- sh
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- bash
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source: kubectl get deployments --all-namespaces --output=json
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extractors:
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- type: json
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name: items
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internal: true
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json:
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- '.items[]'
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javascript:
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- code: |
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deployment = JSON.parse(template.deployment);
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for (const container of deployment.spec.template.spec.containers) {
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if (container.securityContext && container.securityContext.capabilities && container.securityContext.capabilities.add && container.securityContext.capabilities.add.length > 0) {
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let addedCaps = container.securityContext.capabilities.add.join(', ');
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let result = (`Deployment '${deployment.metadata.name}' in namespace '${deployment.metadata.namespace}' has added capabilities: ${addedCaps}.`);
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Export(result);
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}
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}
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extractors:
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- type: dsl
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dsl:
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- response
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# digest: 4a0a00473045022100f45040f69d006ec672d4f4c04146b729cb7c5abcba703a8bbaa2da551013400202204e9b59dbad6d6e89badbb11aa795afa27f33eea1f026085e5f926675ac6cea68:922c64590222798bb761d5b6d8e72950 |