GKE Clusters Missing Resource Labels

ID: gcloud-gke-labels-missing

Severity: low

Author: princechaddha

Tags: cloud,devops,gcp,gcloud,gke,kubernetes,labels,management,gcp-cloud-config

Description

Ensure that user-defined labels are being used to tag, collect, and organize GKE clusters within your Google Cloud Platform (GCP) projects. User-defined labels are a lightweight and efficient way to group together related or associated cloud resources. These are unrelated to Kubernetes labels.

YAML Source

id: gcloud-gke-labels-missing

info:
  name: GKE Clusters Missing Resource Labels
  author: princechaddha
  severity: low
  description: |
    Ensure that user-defined labels are being used to tag, collect, and organize GKE clusters within your Google Cloud Platform (GCP) projects. User-defined labels are a lightweight and efficient way to group together related or associated cloud resources. These are unrelated to Kubernetes labels.
  impact: |
    Without proper resource labels, it becomes difficult to organize, track, and manage GKE clusters effectively, leading to potential operational inefficiencies and cost management challenges.
  remediation: |
    Add user-defined labels to your GKE clusters using the 'gcloud container clusters update' command with --update-labels flag or through the Google Cloud Console. Use meaningful labels like environment, team, billing, version, or owner.
  reference:
    - https://cloud.google.com/kubernetes-engine/docs/how-to/creating-managing-labels
    - https://www.trendmicro.com/cloudoneconformity/knowledge-base/gcp/GKE/use-labels-for-resource-management.html
  tags: cloud,devops,gcp,gcloud,gke,kubernetes,labels,management,gcp-cloud-config

flow: |
  code(1)
  for(let projectId of iterate(template.projectIds)){
    set("projectId", projectId)
    code(2)
    for(let cluster of iterate(template.clusters)){
      cluster = JSON.parse(cluster)
      set("clusterName", cluster.name)
      set("location", cluster.location)
      code(3)
    }
  }

self-contained: true

code:
  - engine:
      - sh
      - bash
    source: |
      gcloud projects list --format="json(projectId)"

    extractors:
      - type: json
        name: projectIds
        internal: true
        json:
          - '.[].projectId'

  - engine:
      - sh
      - bash
    source: |
      gcloud container clusters list --project $projectId --format="json(name,location)"

    extractors:
      - type: json
        name: clusters
        internal: true
        json:
          - '.[]'

  - engine:
      - sh
      - bash
    source: |
      gcloud container clusters describe $clusterName --location $location --project $projectId --format="json(resourceLabels)"

    matchers:
      - type: word
        words:
          - "null"

    extractors:
      - type: dsl
        dsl:
          - '"GKE cluster " + clusterName + " in " + location + " of project " + projectId + " does not have any resource labels configured"'
# digest: 4a0a00473045022100cec40c141ca784c0e611ded193b478d6674d4103b8a7c7f03b6cfe445c636eca022004ecea9e8e1482644003f09fcd28328c7edc3fc19f2c3b1d38850b949e746c24:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

$ nuclei -u "URL" -t "cloud/gcp/gke/gcloud-gke-labels-missing.yaml"

View on Github