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Trivy Operator

Trivy Operator is an open-source security scanner that leverages Trivy to continuously scan your Kubernetes cluster for security issues.

Using Port's Kubernetes Exporter, you can keep track of all Trivy resources across your different clusters and export all the security and configuration issues to Port. You will use built in metadata from your kubernetes resources and CRDs to create entities in Port and keep track of their state.

tip

Get to know the basics of our Kubernetes exporter here!

Prerequisites​

In this use-case, you will use a custom bash script which will assist you in the process of installing Port's K8s exporter.

The script will install the helm chart to the Kubernetes cluster which is currently in kubectl context. To view the context name of the cluster the exporter will be installed on, run:

kubectl config current-context

Setting up blueprints & resource mapping​

The following section will guide you through the process of setting up your blueprints and resource mapping using the installation script. You can read more about the installation script here.

Creating blueprints​

The installation script provides a convenient way to create your blueprints. Using the CUSTOM_BP_PATH environment variable, you can fetch a pre-defined blueprints.json to create your blueprints. For this use-case, you will use this file to define your blueprints. Do this by running:

export CUSTOM_BP_PATH="https://raw.githubusercontent.com/port-labs/template-assets/main/kubernetes/blueprints/trivy-blueprints.json"

This blueprints.json file defines the following blueprints:

  • Cluster
  • Namespace
  • Workload
  • Trivy Config Audit Report
  • Trivy Vulnerability
note

  • Workload is an abstraction of Kubernetes objects which create and manage pods. By creating this blueprint, you can avoid creating a dedicated blueprint per Workload type, all of which will likely look pretty similar. Here is the list of kubernetes objects Workload will represent:

    • Deployment
    • StatefulSet
    • DaemonSet

  • Trivy Config Audit Report represents checks performed by Trivy against a Kubernetes object's configuration

  • Trivy Vulnerability represents the latest vulnerabilities found in a container image of a given Kubernetes workload

Below are the Trivy blueprint schemas used in the exporter:

Trivy config audit report blueprint (click to expand) 
{
   "identifier": "trivyConfigAuditReport",
   "title": "Trivy Config Audit Report",
   "icon": "Trivy",
   "schema": {
      "properties": {
      "category": {
         "title": "Category",
         "type": "string"
      },
      "messages": {
         "title": "Messages",
         "type": "array"
      },
      "description": {
         "title": "Description",
         "type": "string"
      },
      "severity": {
         "title": "Severity",
         "type": "string",
         "enum": [
            "LOW",
            "MEDIUM",
            "HIGH",
            "CRITICAL",
            "UNKNOWN"
         ],
         "enumColors": {
            "LOW": "green",
            "MEDIUM": "yellow",
            "HIGH": "red",
            "CRITICAL": "red",
            "UNKNOWN": "lightGray"
         }
      },
      "remediation": {
         "title": "Remediation",
         "type": "string"
      },
      "success": {
         "title": "Success",
         "type": "boolean"
      },
      "scanner": {
         "title": "Scanner",
         "type": "string"
      },
      "scannerVersion": {
         "title": "Scanner Version",
         "type": "string"
      },
      "createdAt": {
         "title": "Created At",
         "type": "string",
         "format": "date-time"
      },
      "updatedAt": {
         "title": "Updated At",
         "type": "string",
         "format": "date-time"
      }
      },
      "required": []
   },
   "mirrorProperties": {},
   "calculationProperties": {},
   "aggregationProperties": {},
   "relations": {
      "kubernetes_resource": {
         "title": "Kubernetes Resource",
         "target": "workload",
         "required": false,
         "many": false
      }
   }
}
Trivy vulnerability blueprint (click to expand) 
{
   "identifier": "trivyVulnerabilityReport",
   "title": "Trivy Vulnerability",
   "icon": "Trivy",
   "schema": {
      "properties": {
      "resource": {
         "title": "Resource",
         "type": "string"
      },
      "score": {
         "title": "Score",
         "type": "number"
      },
      "fixedVersion": {
         "title": "Fixed Version",
         "type": "string"
      },
      "installedVersion": {
         "title": "Installed Version",
         "type": "string"
      },
      "lastModifiedDate": {
         "title": "Last Modified Date",
         "type": "string",
         "format": "date-time"
      },
      "links": {
         "icon": "DefaultProperty",
         "title": "Links",
         "type": "array",
         "items": {
            "type": "string",
            "format": "url"
         }
      },
      "primaryLink": {
         "title": "Primary Link",
         "type": "string",
         "format": "url"
      },
      "publishedDate": {
         "title": "Published Date",
         "type": "string",
         "format": "date-time"
      },
      "severity": {
         "title": "Severity",
         "type": "string",
         "enum": [
            "LOW",
            "MEDIUM",
            "HIGH",
            "CRITICAL",
            "UNKNOWN"
         ],
         "enumColors": {
            "LOW": "green",
            "MEDIUM": "yellow",
            "HIGH": "red",
            "CRITICAL": "red",
            "UNKNOWN": "lightGray"
         }
      },
      "target": {
         "title": "Target",
         "type": "string"
      },
      "scanner": {
         "title": "Scanner Name",
         "type": "string"
      },
      "scannerVersion": {
         "title": "Scanner Version",
         "type": "string"
      },
      "createdAt": {
         "title": "Created At",
         "type": "string",
         "format": "date-time"
      }
      },
      "required": []
   },
   "mirrorProperties": {},
   "calculationProperties": {},
   "aggregationProperties": {},
   "relations": {
      "kubernetes_resource": {
         "title": "Kubernetes Resource",
         "target": "workload",
         "required": false,
         "many": false
      }
   }
}

Exporting custom resource mapping​

Using the CONFIG_YAML_URL parameter, you can define a custom resource mapping to use when installing the exporter.

In this use-case you will be using the this configuration file. To achieve this, run:

export CONFIG_YAML_URL="https://raw.githubusercontent.com/port-labs/template-assets/main/kubernetes/templates/trivy-kubernetes_v1_config.yaml"

Below are the mappings for the Trivy resources:

Trivy config audit report mapping (click to expand) 
  - kind: aquasecurity.github.io/v1alpha1/configauditreports
    selector:
      query: 'true'
    port:
      itemsToParse: .report.checks
      entity:
        mappings:
          - identifier: .metadata.name + "-" + .item.checkID + "-" + .metadata.namespace + "-" + env.CLUSTER_NAME
            title: .item.title
            icon: '"Trivy"'
            blueprint: '"trivyConfigAuditReport"'
            properties:
              category: .item.category
              messages: .item.messages
              description: .item.description
              severity: .item.severity
              remediation: .item.remediation
              success: .item.success
              scanner: .report.scanner.name
              scannerVersion: .report.scanner.version
              createdAt: .metadata.creationTimestamp
              updatedAt: .report.updateTimestamp
            relations:
              kubernetes_resource: (
                if (.metadata.ownerReferences | length > 0) then 
                     (.metadata.ownerReferences[] | select(.controller == true) |
                     .name + "-" + .kind + "-" + .metadata.namespace + "-" + env.CLUSTER_NAME
                     )
                  else
                     empty
                  end
                )
Trivy vulnerability mapping (click to expand) 
  - kind: aquasecurity.github.io/v1alpha1/vulnerabilityreports
    selector:
      query: 'true'
    port:
      itemsToParse: .report.vulnerabilities
      entity:
        mappings:
          - identifier: .metadata.name + "-" + .item.vulnerabilityID + "-" + .metadata.namespace + "-" + env.CLUSTER_NAME
            title: .item.title
            icon: '"Trivy"'
            blueprint: '"trivyVulnerabilityReport"'
            properties:
              resource: .item.resource
              score: .item.score
              fixedVersion: .item.fixedVersion
              installedVersion: .item.installedVersion
              lastModifiedDate: .item.lastModifiedDate
              links: .item.links
              primaryLink: .item.primaryLink
              publishedDate: .item.publishedDate
              severity: .item.severity
              target: .item.target
              scanner: .report.scanner.name
              scannerVersion: .report.scanner.version
              createdAt: .metadata.creationTimestamp
            relations:
              kubernetes_resource: (
               if (.metadata.ownerReferences | length > 0) then 
                     (.metadata.ownerReferences[] | select(.controller == true) |
                     .name + "-" + .kind + "-" + .metadata.namespace + "-" + env.CLUSTER_NAME
                     )
                  else
                     empty
                  end
               )

Alternative integration using script​

While the Trivy Kubernetes exporter described above is the recommended installation method, you may prefer to use a webhook and a script to ingest your Trivy scan results to Port.