Process Targeting Cluster Kubelet Endpoint

No violationsstackroxhighruntime

Detects misuse of the healthz/kubelet API/heapster endpoint

Rationale: A pod communicating to a Kubernetes API from via command line is highly irregular
Remediation: Look for open ports that may allow remote execution. Remove network utilities like curl and wget that allow these connections. Consider a firewall deny ingress firewall rule to the node serving the API

CategoriesKubernetes

Generated artifacts

1 of 5 targets supported

process-targeting-cluster-kubelet-endpoint.yaml

- rule: process-targeting-cluster-kubelet-endpoint
  desc: Detects misuse of the healthz/kubelet API/heapster endpoint
  condition: proc.cmdline contains "(https?://)?(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:(10250|10248|10255)|heapster\.kube\-system/metrics|KUBERNETES_PORT_443_TCP_ADDR|KUBERNETES_SERVICE_HOST).*"
  output: Process %proc.name executed by user %user.name (uid=%user.uid) in container %container.id image=%container.image.repository (policy=Process Targeting Cluster Kubelet Endpoint)
  priority: ERROR
  source: syscall
  tags:
    - stackrox-import
    - policy

IR (canonical)

{
  "id": "86804b96-e87e-4eae-b56e-1718a8a55763",
  "name": "Process Targeting Cluster Kubelet Endpoint",
  "description": "Detects misuse of the healthz/kubelet API/heapster endpoint",
  "rationale": "A pod communicating to a Kubernetes API from via command line is highly irregular",
  "remediation": "Look for open ports that may allow remote execution. Remove network utilities like curl and wget that allow these connections. Consider a firewall deny ingress firewall rule to the node serving the API",
  "severity": "high",
  "categories": [
    "Kubernetes"
  ],
  "lifecycle": [
    "runtime"
  ],
  "eventSource": "deployment",
  "scope": [],
  "exclusions": [],
  "enforcement": {
    "failBuild": false
  },
  "expression": {
    "op": "criterion",
    "field": "process-arguments",
    "values": [
      "(https?://)?(\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\:(10250|10248|10255)|heapster\\.kube\\-system/metrics|KUBERNETES_PORT_443_TCP_ADDR|KUBERNETES_SERVICE_HOST).*"
    ],
    "valuesOp": "or",
    "negate": false
  },
  "disabled": false
}

Original StackRox JSON

{
  "id": "86804b96-e87e-4eae-b56e-1718a8a55763",
  "name": "Process Targeting Cluster Kubelet Endpoint",
  "description": "Detects misuse of the healthz/kubelet API/heapster endpoint",
  "rationale": "A pod communicating to a Kubernetes API from via command line is highly irregular",
  "remediation": "Look for open ports that may allow remote execution. Remove network utilities like curl and wget that allow these connections. Consider a firewall deny ingress firewall rule to the node serving the API",
  "disabled": false,
  "categories": [
    "Kubernetes"
  ],
  "lifecycleStages": [
    "RUNTIME"
  ],
  "eventSource": "DEPLOYMENT_EVENT",
  "exclusions": [],
  "scope": [],
  "severity": "HIGH_SEVERITY",
  "enforcementActions": [],
  "policySections": [
    {
      "sectionName": "",
      "policyGroups": [
        {
          "fieldName": "Process Arguments",
          "booleanOperator": "OR",
          "negate": false,
          "values": [
            {
              "value": "(https?://)?(\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\:(10250|10248|10255)|heapster\\.kube\\-system/metrics|KUBERNETES_PORT_443_TCP_ADDR|KUBERNETES_SERVICE_HOST).*"
            }
          ]
        }
      ]
    }
  ],
  "notifiers": [],
  "lastUpdated": null,
  "SORTName": "",
  "SORTLifecycleStage": "",
  "SORTEnforcement": false,
  "policyVersion": "1.1",
  "mitreAttackVectors": [
    {
      "tactic": "TA0007",
      "techniques": [
        "T1613"
      ]
    }
  ],
  "criteriaLocked": true,
  "mitreVectorsLocked": true,
  "isDefault": true,
  "source": "IMPERATIVE"
}