48 lines
1.7 KiB
YAML
48 lines
1.7 KiB
YAML
id: k8s-network-ingress-rules
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info:
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name: Define network ingress rules
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author: princechaddha
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severity: medium
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description: Checks if Kubernetes network policies define specific ingress rules, which can help secure network communication within the cluster.
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impact: |
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Without specific ingress rules defined in network policies, unintended traffic may access pods within the Kubernetes cluster, increasing the risk of malicious activity.
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remediation: |
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Define specific ingress rules in all network policies to control the flow of inbound traffic to pods, ensuring only authorized traffic can access cluster resources.
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reference:
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- https://kubernetes.io/docs/concepts/services-networking/network-policies/
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tags: cloud,devops,kubernetes,security,k8s,k8s-cluster-security
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flow: |
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code(1);
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for (let policy of template.items) {
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set("policy", policy)
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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 networkpolicies --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[] | {policy: .metadata.name, ingress: .spec.ingress}'
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javascript:
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- code: |
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let policyData = JSON.parse(template.policy);
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if (!policyData.ingress || policyData.ingress.length === 0) {
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let result = `Network policy '${policyData.policy}' does not define any ingress rules.`;
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Export(result);
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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: 4a0a00473045022100d225b4ed37ec5deb1b364b52b2db205bffb08d4c712940221be0d4a24c471f75022025482dd2adbab336f0b0dda3ed30272390ddd93780dd1cd41d6f6e1ceea8e096:922c64590222798bb761d5b6d8e72950 |