Scanning images for Java vulnerabilities

The On-Demand Scanning API allows you to scan images stored locally on your computer, or remotely in Container Registry or Artifact Registry. You can use On-Demand Scanning to scan images in your CI/CD pipeline, for system vulnerabilities and Maven package vulnerabilities before deciding whether to store them in a registry. See the Pricing page for pricing information.

This page describes how to manually scan container images for system vulnerabilities and Maven packages vulnerabilities.

Before you begin

  1. Sign in to your Google Cloud account. If you're new to Google Cloud, create an account to evaluate how our products perform in real-world scenarios. New customers also get $300 in free credits to run, test, and deploy workloads.
  2. In the Google Cloud Console, on the project selector page, select or create a Google Cloud project.

    Go to project selector

  3. Make sure that billing is enabled for your Cloud project. Learn how to confirm that billing is enabled for your project.

  4. Enable the On-Demand Scanning API.

    Enable the API

  5. Install and initialize the Cloud SDK.
  6. In the Google Cloud Console, on the project selector page, select or create a Google Cloud project.

    Go to project selector

  7. Make sure that billing is enabled for your Cloud project. Learn how to confirm that billing is enabled for your project.

  8. Enable the On-Demand Scanning API.

    Enable the API

  9. Install and initialize the Cloud SDK.
  10. Add the local-extract component to your Cloud SDK installation

    Using the Cloud SDK Component Manager

    The component manager will prompt you to install the required components the first time you run the scanning command.

    Using your system package manager

    • For Debian/Ubuntu:
      sudo apt install google-cloud-sdk-local-extract
          
    • For Red Hat/Fedora/CentOS:
      sudo dnf install google-cloud-sdk-local-extract
          

      Alternatively, you can replace dnf with yum in the previous command.

  11. Grant the IAM role On-Demand Scanning Admin to the user or service account that you are going to use with On-Demand Scanning. If you are using the owner account of the project to run the scans, you can skip this step.

Scanning a container image

  • Local scan:

    gcloud artifacts docker images scan IMAGE_URI \
        --additional-package-types=MAVEN [--location=(us,europe,asia)] [--async]
    

    For a local image, use one of the following formats for the IMAGE_URI:

    • IMAGE_ID:TAG
    • IMAGE_ID
  • Remote scan:

    gcloud artifacts docker images scan IMAGE_URI \
        --additional-package-types=MAVEN --remote [--location=(us,europe,asia)] [--async]
    

    For a remote image, use one of the following formats for the IMAGE_URI:

    • HOSTNAME/PROJECT_ID/REPOSITORY_ID/IMAGE_ID@sha256:HASH
    • HOSTNAME/PROJECT_ID/REPOSITORY_ID/IMAGE_ID:HASH
    • HOSTNAME/PROJECT_ID/REPOSITORY_ID/IMAGE_ID
    • HOSTNAME/PROJECT_ID/IMAGE_ID@sha256:HASH
    • HOSTNAME/PROJECT_ID/IMAGE_ID:HASH
    • HOSTNAME/PROJECT_ID/IMAGE_ID

    For images in Artifact Registry the IMAGE_URI must include the REPOSTIORY_ID.

For both local and remote scans, you can use the following optional flags:

  • --location is an optional flag to manually select the multi-region where the scanning takes place. Choosing a multi-region closer to your physical location minimizes latency. The available locations are: us, europe and asia. The default location is us.

  • --async is an optional flag to run the scanning process asynchronously. If you omit this flag, your terminal will block until the scanning process is complete.

Synchronous scanning

The following example shows the output of a synchronous scan, without the --async flag:

$ gcloud artifacts docker images scan jenkins:2.60.3-alpine --additional-package-types=MAVEN


✓ Scanning container image
  ✓ Locally extracting packages and versions from local container image
  ✓ Remotely initiating analysis of packages and versions
  ✓ Waiting for analysis operation to complete [projects/my-project/locations/us/operations/87d2e137-1d1c-4790-8e5e-daf6c96ae7d7]
Done.
done: true
metadata:
  '@type': type.googleapis.com/google.cloud.ondemandscanning.v1.AnalyzePackagesMetadata
  createTime: '2021-01-05T23:03:04.185261Z'
  resourceUri: jenkins:2.60.3-alpine
name: projects/my-project/locations/us/operations/87d2e137-1d1c-4790-8e5e-daf6c96ae7d7
response:
  '@type': type.googleapis.com/google.cloud.ondemandscanning.v1.AnalyzePackagesResponse
  scan: projects/my-project/locations/us/scans/2fe2bfb8-f0c5-4dd6-a8c8-38961869767a

Use the scan name to retrieve the vulnerability results. In the example, the scan name is the value of scanin the last line of the output message.

Asynchronous scanning

The following example shows the output of performing an asynchronous scan:

$ gcloud artifacts docker images scan jenkins:2.60.3-alpine --additional-package-types=MAVEN --async


✓ Scanning container image
  ✓ Locally extracting packages and versions from local container image
  ✓ Remotely initiating analysis of packages and versions
Done.
Check operation [projects/cloud-project/locations/us/operations/2e1a6b1f-16e5-4427-ac86-72c998a3dd16] for status.
metadata:
  '@type': type.googleapis.com/google.cloud.ondemandscanning.v1.AnalyzePackagesMetadata
  createTime: '2021-01-05T23:04:54.393510Z'
  resourceUri: jenkins:2.60.3-alpine
name: projects/my-project/locations/us/operations/2e1a6b1f-16e5-4427-ac86-72c998a3dd16

This launches a long-running operation and returns its ID without blocking your terminal. Use the operation ID, the value of name in the last line of the output message, to poll the operation.

Polling the long-running operation

Use the operation ID from the output of they asynchronous scanning command to check the operation status:

gcloud artifacts docker images get-operation LRO_ID

Where LRO_ID is the long-running operation id.

Continuing with the example of the asynchronous scanning section, to check the status of the operation:

$ gcloud artifacts docker images get-operation \
  projects/cloud-project/locations/us/operations/2e1a6b1f-16e5-4427-ac86-72c998a3dd16

done: true
metadata:
  '@type': type.googleapis.com/google.cloud.ondemandscanning.v1.AnalyzePackagesMetadata
  createTime: '2021-01-05T23:04:54.393510Z'
  resourceUri: jenkins:2.60.3-alpine
name: projects/my-project/locations/us/operations/2e1a6b1f-16e5-4427-ac86-72c998a3dd16
response:
  '@type': type.googleapis.com/google.cloud.ondemandscanning.v1.AnalyzePackagesResponse
  scan: projects/my-project/locations/us/scans/2fe2bfb8-f0c5-4dd6-a8c8-38961869767a

If the output includes the line done: true, the scanning operation is completed. Use the scan name to retrieve the vulnerability results. The name is the value of scan in the last line of the output message.

Retrieve the scan results

To retrieve the scanning results after the scanning operation is completed, use the following command:

gcloud artifacts docker images list-vulnerabilities SCAN_NAME [--limit=X]

Where:

  • SCAN_NAME is the scan name. You can find it in the last line of the output when you either run a synchronous scan or poll the long-running operation, after the scanning is finished.

  • --limit=X is an optional flag that limits the number of occurrences shown in the output.

For example:

createTime: '2021-06-29T17:01:18.819477Z'
kind: VULNERABILITY
name: projects/my-project/locations/us/occurrences/06305977-f557-4772-8586-4260684291d3
noteName: projects/my-project/notes/CVE-2014-0114
resourceUri: jenkins:2.60.3-alpine
updateTime: '2021-06-29T17:01:18.819477Z'
vulnerability:
  cvssScore: 4.3
  effectiveSeverity: MEDIUM
  longDescription: http/conn/ssl/SSLConnectionSocketFactory.java in ...
  packageIssue:
  - affectedCpeUri: cpe:/o:alpine:alpine_linux:3.13
    affectedPackage: org.apache.httpcomponents:httpclient
    affectedVersion:
      fullName: 4.0.2
      kind: NORMAL
      name: 4.0.2
    effectiveSeverity: MEDIUM
    fixedCpeUri: cpe:/o:alpine:alpine_linux:3.13
    fixedPackage: org.apache.httpcomponents:httpclient
    fixedVersion:
      fullName: 4.3.6
      kind: NORMAL
      name: 4.3.6
    packageType: MAVEN
  relatedUrls:
  - label: More Info
    url: https://security-tracker.debian.org/tracker/CVE-2015-5262
  severity: MEDIUM
  shortDescription: CVE-2015-5262

The output of this command is a list of occurrences in the Grafeas format. In this case, it shows one medium-level severity vulnerability found in the image. Maven package vulnerabilities contain the field packageType:MAVEN.

The scanning results are available for 48 hours after the scanning operation is completed.

What's next