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  1. Red Hat Advanced Cluster Security
  2. ROX-27455

Regex matching doesn't generate violations for image component versions

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: Undefined Undefined
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    • 4.6.0
    • Policy Management
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    • Rox Sprint 4.7E - Global, Rox Sprint 4.7F - Global
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      USER PROBLEM
      The user is attempting to create a regex match for image component versions. However, no deployments are violating the policy, despite the pattern matching the image component version correctly.

      CONDITIONS
      Create a deployment using the Red Hat UBI:

      apiVersion: apps/v1
kind: Deployment
metadata:    
  labels: 
    app: ubi-test
    app.kubernetes.io/component: ubi-test
    app.kubernetes.io/instance: ubi-test
    app.kubernetes.io/name: ubi-test
    app.kubernetes.io/part-of: ubi-test
  name: ubi-test
  namespace: app-deploy
spec: 
  progressDeadlineSeconds: 600
  replicas: 0
  revisionHistoryLimit: 10
  selector: 
    matchLabels: 
      app: ubi-test
  strategy: 
    rollingUpdate: 
      maxSurge: 25%
      maxUnavailable: 25%
    type: RollingUpdate
  template: 
    metadata: 
      annotations: 
      labels: 
        app: ubi-test
        deployment: ubi-test
    spec: 
      containers: 
      - image: registry.redhat.io/ubi8/ubi:8.3-297.1618432833
        imagePullPolicy: IfNotPresent
        command: 
          - "/bin/bash"
          - "-c"
          - "--"
        args: 
          - "while true; do sleep 30; done;"
        name: ubi-test
        ports: 
        - containerPort: 8080
          protocol: TCP
        resources: {}
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      terminationGracePeriodSeconds: 30

      Scan the image:

      roxctl image scan -i registry.redhat.io/ubi8/ubi:8.3-297.1618432833

      Create a RHACS policy that includes a regex match for the `redhat-release` image component version:

      {
    "policies": [
        {
            "id": "38a67ce6-3350-41f1-8b49-a3fead8073f5",
            "name": "UBI versions",
            "description": "",
            "rationale": "",
            "remediation": "",
            "disabled": false,
            "categories": [
                "Kubernetes"
            ],
            "lifecycleStages": [
                "DEPLOY"
            ],
            "eventSource": "NOT_APPLICABLE",
            "exclusions": [],
            "scope": [],
            "severity": "LOW_SEVERITY",
            "enforcementActions": [],
            "notifiers": [],
            "lastUpdated": "2024-12-18T21:08:15.671543011Z",
            "SORTName": "",
            "SORTLifecycleStage": "",
            "SORTEnforcement": false,
            "policyVersion": "1.1",
            "policySections": [
                {
                    "sectionName": "Rule 1",
                    "policyGroups": [
                        {
                            "fieldName": "Image Component",
                            "booleanOperator": "OR",
                            "negate": false,
                            "values": [
                                {
                                    "value": "redhat-release=r/^8\\.[0-4].*"
                                }
                            ]
                        }
                    ]
                }
            ],
            "mitreAttackVectors": [],
            "criteriaLocked": false,
            "mitreVectorsLocked": false,
            "isDefault": false,
            "source": "IMPERATIVE"
        }
    ]
}

      Observe that the policy does not generate any violations, despite the image containing an image component (`redhat-release`) that matches the regex.

      ROOT CAUSE

      • pending

      FIX

      • pending

              ksanchet Khushboo Sancheti
              sboulden@redhat.com Shane Boulden
              ACS Core Workflows
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                Created:
                Updated: