Trivy Action

GitHub Action for Trivy

Table of Contents

• Usage
  • Workflow
  • Docker Image Scanning
  • Git Repository Scanning
• Customizing
  • Inputs

Usage

Workflow

name: build
on:
  push:
    branches:
      - master
  pull_request:
jobs:
  build:
    name: Build
    runs-on: ubuntu-18.04
    steps:
      - name: Checkout code
        uses: actions/checkout@v2
      
      - name: Build an image from Dockerfile
        run: |
                    docker build -t docker.io/my-organization/my-app:${{ github.sha }} .
      
      - name: Run Trivy vulnerability scanner
        uses: aquasecurity/trivy-action@master
        with:
          image-ref: 'docker.io/my-organization/my-app:${{ github.sha }}'
          format: 'table'
          exit-code: '1'
          ignore-unfixed: true
          vuln-type: 'os,library'
          severity: 'CRITICAL,HIGH'

Using Trivy with GitHub Code Scanning

If you have GitHub code scanning available you can use Trivy as a scanning tool as follows:

name: build
on:
  push:
    branches:
      - master
  pull_request:
jobs:
  build:
    name: Build
    runs-on: ubuntu-18.04
    steps:
      - name: Checkout code
        uses: actions/checkout@v2

      - name: Build an image from Dockerfile
        run: |
                    docker build -t docker.io/my-organization/my-app:${{ github.sha }} .

      - name: Run Trivy vulnerability scanner
        uses: aquasecurity/trivy-action@master
        with:
          image-ref: 'docker.io/my-organization/my-app:${{ github.sha }}'
          format: 'template'
          template: '@/contrib/sarif.tpl'
          output: 'trivy-results.sarif'

      - name: Upload Trivy scan results to GitHub Security tab
        uses: github/codeql-action/upload-sarif@v1
        with:
          sarif_file: 'trivy-results.sarif'

You can find a more in-depth example here: https://github.com/aquasecurity/trivy-sarif-demo/blob/master/.github/workflows/scan.yml

Using Trivy to scan your Git repo

It's also possible to scan your git repos with Trivy's built-in repo scan. This can be handy if you want to run Trivy as a build time check on each PR that gets opened in your repo. This helps you identify potential vulnerablites that might get introduced with each PR.

If you have GitHub code scanning available you can use Trivy as a scanning tool as follows:

name: build
on:
  push:
    branches:
      - master
  pull_request:
jobs:
  build:
    name: Build
    runs-on: ubuntu-18.04
    steps:
      - name: Checkout code
        uses: actions/checkout@v2

      - name: Run Trivy vulnerability scanner in repo mode
        uses: aquasecurity/trivy-action@master
        with:
          scan-type: 'fs'
          ignore-unfixed: true
          format: 'template'
          template: '@/contrib/sarif.tpl'
          output: 'trivy-results.sarif'
          severity: 'CRITICAL'

      - name: Upload Trivy scan results to GitHub Security tab
        uses: github/codeql-action/upload-sarif@v1
        with:
          sarif_file: 'trivy-results.sarif'

Using Trivy to scan your private registry

It's also possible to scan your private registry with Trivy's built-in image scan. All you have to do is set ENV vars.

Docker Hub registry

Docker Hub needs TRIVY_USERNAME and TRIVY_PASSWORD. You don't need to set ENV vars when downloading from a public repository.

name: build
on:
  push:
    branches:
      - master
  pull_request:
jobs:
  build:
    name: Build
    runs-on: ubuntu-18.04
    steps:
      - name: Checkout code
        uses: actions/checkout@v2
        
      - name: Run Trivy vulnerability scanner
        uses: aquasecurity/trivy-action@master
        with:
          image-ref: 'docker.io/my-organization/my-app:${{ github.sha }}'
          format: 'template'
          template: '@/contrib/sarif.tpl'
          output: 'trivy-results.sarif'
        env:
          TRIVY_USERNAME: Username
          TRIVY_PASSWORD: Password        

      - name: Upload Trivy scan results to GitHub Security tab
        uses: github/codeql-action/upload-sarif@v1
        with:
          sarif_file: 'trivy-results.sarif'

AWS ECR (Elastic Container Registry)

Trivy uses AWS SDK. You don't need to install aws CLI tool. You can use AWS CLI's ENV Vars.

name: build
on:
  push:
    branches:
      - master
  pull_request:
jobs:
  build:
    name: Build
    runs-on: ubuntu-18.04
    steps:
      - name: Checkout code
        uses: actions/checkout@v2
        
      - name: Run Trivy vulnerability scanner
        uses: aquasecurity/trivy-action@master
        with:
          image-ref: 'aws_account_id.dkr.ecr.region.amazonaws.com/imageName:${{ github.sha }}'
          format: 'template'
          template: '@/contrib/sarif.tpl'
          output: 'trivy-results.sarif'
        env:
          AWS_ACCESS_KEY_ID: key_id
          AWS_SECRET_ACCESS_KEY: access_key
          AWS_DEFAULT_REGION: us-west-2

      - name: Upload Trivy scan results to GitHub Security tab
        uses: github/codeql-action/upload-sarif@v1
        with:
          sarif_file: 'trivy-results.sarif'

GCR (Google Container Registry)

Trivy uses Google Cloud SDK. You don't need to install gcloud command.

If you want to use target project's repository, you can set it via GOOGLE_APPLICATION_CREDENTIAL.

name: build
on:
  push:
    branches:
      - master
  pull_request:
jobs:
  build:
    name: Build
    runs-on: ubuntu-18.04
    steps:
      - name: Checkout code
        uses: actions/checkout@v2
        
      - name: Run Trivy vulnerability scanner
        uses: aquasecurity/trivy-action@master
        with:
          image-ref: 'docker.io/my-organization/my-app:${{ github.sha }}'
          format: 'template'
          template: '@/contrib/sarif.tpl'
          output: 'trivy-results.sarif'
        env:
          GOOGLE_APPLICATION_CREDENTIAL: /path/to/credential.json

      - name: Upload Trivy scan results to GitHub Security tab
        uses: github/codeql-action/upload-sarif@v1
        with:
          sarif_file: 'trivy-results.sarif'

Self-Hosted

BasicAuth server needs TRIVY_USERNAME and TRIVY_PASSWORD. if you want to use 80 port, use NonSSL TRIVY_NON_SSL=true

name: build
on:
  push:
    branches:
      - master
  pull_request:
jobs:
  build:
    name: Build
    runs-on: ubuntu-18.04
    steps:
      - name: Checkout code
        uses: actions/checkout@v2
        
      - name: Run Trivy vulnerability scanner
        uses: aquasecurity/trivy-action@master
        with:
          image-ref: 'docker.io/my-organization/my-app:${{ github.sha }}'
          format: 'template'
          template: '@/contrib/sarif.tpl'
          output: 'trivy-results.sarif'
        env:
          TRIVY_USERNAME: Username
          TRIVY_PASSWORD: Password        

      - name: Upload Trivy scan results to GitHub Security tab
        uses: github/codeql-action/upload-sarif@v1
        with:
          sarif_file: 'trivy-results.sarif'

Customizing

inputs

Following inputs can be used as step.with keys:

Name	Type	Default	Description
scan-type	String	image	Scan type, e.g. image or fs
input	String		Tar reference, e.g. alpine-latest.tar
image-ref	String		Image reference, e.g. alpine:3.10.2
scan-ref	String	/github/workspace/	Scan reference, e.g. /github/workspace/ or .
format	String	table	Output format (table, json, template)
template	String		Output template (@/contrib/sarif.tpl, @/contrib/gitlab.tpl, @/contrib/junit.tpl)
output	String		Save results to a file
exit-code	String	0	Exit code when vulnerabilities were found
ignore-unfixed	Boolean	false	Ignore unpatched/unfixed vulnerabilities
vuln-type	String	os,library	Vulnerability types (os,library)
severity	String	UNKNOWN,LOW,MEDIUM,HIGH,CRITICAL	Severities of vulnerabilities to be displayed
skip-dirs	String		Comma separated list of directories where traversal is skipped
cache-dir	String		Cache directory
timeout	String	2m0s	Scan timeout duration