Secret Mounted as Environment Variable

No violationsstackroxhighdeploy

Alert on deployments with Kubernetes secret mounted as environment variable

Rationale: Using secrets in environment variables may allow inspection into your secrets from the host.
Remediation: Migrate your secrets from environment variables to your security team's secret management solution.

CategoriesSecurity Best Practices

Compliance mappingsView coverage →

CIS Kubernetes Benchmark v1.8: 5.4.1
DORA EU 2022/2554: Art. 9.2
ISO/IEC 27001 2022: A.8.9
NIST SP 800-53 rev. 5: CM-2
PCI DSS 4.0: 2.2.1

Generated artifacts

3 of 5 targets supported

secret-mounted-as-environment-variable.yaml

apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
  name: secret-mounted-as-environment-variable
  annotations:
    policies.kyverno.io/title: Secret Mounted as Environment Variable
    policies.kyverno.io/category: Security Best Practices
    policies.kyverno.io/severity: high
    policies.kyverno.io/description: Alert on deployments with Kubernetes secret mounted as environment variable
    policies.kyverno.io/remediation: Migrate your secrets from environment variables to your security team's secret management solution.
    policies.kyverno.io/rationale: Using secrets in environment variables may allow inspection into your secrets from the host.
    policies.io/source: stackrox
    policies.io/source-id: a788556c-9268-4f30-a114-d456f2380818
spec:
  validationFailureAction: Enforce
  background: true
  rules:
    - name: secret-mounted-as-environment-variable
      match:
        any:
          - resources:
              kinds:
                - Pod
      validate:
        message: 'Policy "Secret Mounted as Environment Variable" violated: Alert on deployments with Kubernetes secret mounted as environment variable'
        deny:
          conditions:
            all:
              - key: "{{ request.object.spec.containers[].env[].name || `[]` }}"
                operator: AnyIn
                value:
                  - SECRET_KEY

IR (canonical)

{
  "id": "a788556c-9268-4f30-a114-d456f2380818",
  "name": "Secret Mounted as Environment Variable",
  "description": "Alert on deployments with Kubernetes secret mounted as environment variable",
  "rationale": "Using secrets in environment variables may allow inspection into your secrets from the host.",
  "remediation": "Migrate your secrets from environment variables to your security team's secret management solution.",
  "severity": "high",
  "categories": [
    "Security Best Practices"
  ],
  "lifecycle": [
    "deploy"
  ],
  "eventSource": "none",
  "scope": [],
  "exclusions": [],
  "enforcement": {
    "failBuild": false
  },
  "expression": {
    "op": "criterion",
    "field": "environment-variable",
    "values": [
      "SECRET_KEY=="
    ],
    "valuesOp": "or",
    "negate": false
  },
  "disabled": true
}

Original StackRox JSON

{
  "id": "a788556c-9268-4f30-a114-d456f2380818",
  "name": "Secret Mounted as Environment Variable",
  "description": "Alert on deployments with Kubernetes secret mounted as environment variable",
  "rationale": "Using secrets in environment variables may allow inspection into your secrets from the host.",
  "remediation": "Migrate your secrets from environment variables to your security team's secret management solution.",
  "disabled": true,
  "categories": [
    "Security Best Practices"
  ],
  "lifecycleStages": [
    "DEPLOY"
  ],
  "eventSource": "NOT_APPLICABLE",
  "exclusions": [],
  "scope": [],
  "severity": "HIGH_SEVERITY",
  "enforcementActions": [],
  "policySections": [
    {
      "sectionName": "",
      "policyGroups": [
        {
          "fieldName": "Environment Variable",
          "booleanOperator": "OR",
          "negate": false,
          "values": [
            {
              "value": "SECRET_KEY=="
            }
          ]
        }
      ]
    }
  ],
  "notifiers": [],
  "lastUpdated": null,
  "SORTName": "",
  "SORTLifecycleStage": "",
  "SORTEnforcement": false,
  "policyVersion": "1.1",
  "mitreAttackVectors": [],
  "criteriaLocked": true,
  "mitreVectorsLocked": true,
  "isDefault": true,
  "source": "IMPERATIVE"
}