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Black Duck Hub scanner reference for STO

You can scan your repositories and container images using Black Duck Hub, a comprehensive and versatile open-source scanner.

Important notes for running Black Duck Hub scans in STO

Docker-in-Docker requirements

The following use cases require a Docker-in-Docker background step in your pipeline:

  • Container image scans on Kubernetes and Docker build infrastructures
  • Security steps (not step palettes) on Kubernetes and Docker build infrastructures
    • Required for all target types and Orchestration/DataLoad modes

The following use cases do not require Docker-in-Docker:

Set up a Docker-in-Docker background step
  1. Go to the stage where you want to run the scan.

  2. In Overview, add the shared path /var/run.

  3. In Execution, do the following:

    1. Click Add Step and then choose Background.

    2. Configure the Background step as follows:

      1. Dependency Name = dind

      2. Container Registry = The Docker connector to download the DinD image. If you don't have one defined, go to Docker connector settings reference.

      3. Image = docker:dind

      4. Under Entry Point, add the following: dockerd

        In most cases, using dockerd is a faster and more secure way to set up the background step. For more information, go to the TLS section in the Docker quick reference.

      If the DinD service doesn't start with dockerd, clear the Entry Point field and then run the pipeline again. This starts the service with the default entry point.

      1. Under Optional Configuration, select the Privileged checkbox.
Configure the background step

Root access requirements

You need to run the scan step with root access if either of the following apply:


You can set up your STO scan images and pipelines to run scans as non-root and establish trust for your own proxies using custom certificates. For more information, go to Configure STO to Download Images from a Private Registry.

For more information

The following topics contain useful information for setting up scanner integrations in STO:

Black Duck Hub step settings for STO scans

The recommended workflow is add a BlackDuck step to a Security Tests or CI Build stage and then configure it as described below.


Scan Mode

  • Orchestration Configure the step to run a scan and then ingest, normalize, and deduplicate the results.

Scan Configuration

The predefined configuration to use for the scan. All scan steps have at least one configuration.



  • Repository Scan a codebase repo.

    In most cases, you specify the codebase using a code repo connector that connects to the Git account or repository where your code is stored. For information, go to Configure codebase.

  • Container Image Scan the layers, libraries, and packages in a container image.

Detect target and variant

When auto-detect is enabled for code repositories, the step detects these values using git:

  • To detect the target, the step runs git config --get remote.origin.url.
  • To detect the variant, the step runs git rev-parse --abbrev-ref HEAD. The default assumption is that the HEAD branch is the one you want to scan.

When auto-detect is enabled for container images, the step detects the target and variant using the Container Image Name and Tag defined in the step or runtime input.

Note the following:

  • Auto-detection is not available when the Scan Mode is Ingestion.
  • Auto-detect is the default selection for new pipelines. Manual is the default for old pipelines, but you might find that neither radio button is selected in the UI.


The identifier for the target, such as codebaseAlpha or jsmith/myalphaservice. Descriptive target names make it much easier to navigate your scan data in the STO UI.

It is good practice to specify a baseline for every target.


The identifier for the specific variant to scan. This is usually the branch name, image tag, or product version. Harness maintains a historical trend for each variant.


The workspace path on the pod running the scan step. The workspace path is /harness by default.

You can override this if you want to scan only a subset of the workspace. For example, suppose the pipeline publishes artifacts to a subfolder /tmp/artifacts and you want to scan these artifacts only. In this case, you can specify the workspace path as /harness/tmp/artifacts.


Ingestion File

The path to your scan results when running an Ingestion scan, for example /shared/scan_results/myscan.latest.sarif.

  • The data file must be in a supported format for the scanner.

  • The data file must be accessible to the scan step. It's good practice to save your results files to a shared path in your stage. In the visual editor, go to the stage where you're running the scan. Then go to Overview > Shared Paths. You can also add the path to the YAML stage definition like this:

        - stage:
    - /shared/scan_results



The fully-qualified URL to the scanner.

Enforce SSL

The step and the scanner communicate over SSL by default. Set this to false to disable SSL (not safe).

API Version

The scanner API version. Some scanners require this.


The scanner API version. Specify one of the following:

  • Username & Password
  • API Key

Access Token

The access token to log in to the scanner. In most cases this is a password or an API key.

You should create a Harness text secret with your encrypted token and reference the secret using the format <+secrets.getValue("")>. For more information, go to Add and Reference Text Secrets.

Scan Tool

Project Name

The name of the scan project as defined in the scanner. This is the also the target name in the Harness UI (Security Tests > Test Targets).

Project Version

The version of the scan project, as defined in the scanner.

Log Level

The minimum severity of the messages you want to include in your scan logs. You can specify one of the following:

  • INFO

Additional CLI flags

Use this field to run the synopsis detect scanner with flags such as: {DETECTOR, SIGNATURE}

This string excludes some detectors from a scan.


Passing CLI flags is an advanced feature. Some flags might not work in the context of STO. You should test your flags and arguments thoroughly before you use them in your Harness pipelines.

Fail on Severity

Every Security step has a Fail on Severity setting. If the scan finds any vulnerability with the specified severity level or higher, the pipeline fails automatically. You can specify one of the following:

  • HIGH
  • LOW
  • INFO
  • NONE — Do not fail on severity

The YAML definition looks like this: fail_on_severity : critical # | high | medium | low | info | none


You can use this field to specify environment variables for your scanner.

Additional Configuration

In the Additional Configuration settings, you can use the following options:

Advanced settings

In the Advanced settings, you can use the following options:

Troubleshooting Black Duck Hub

Scan fails with message "Could not connect to addon client after max retries"

This message indicates that indicates that the container running the BlackDuck scan step is terminated abruptly due to insufficient resources. Harness recommends that you increase the resource allocation using an iterative approach: Run the scan again with memory: 1Gi and cpu: "1.0", monitor the results, and adjust the resource allocation until the scanner runs successfully.

For more information, go to Optimize STO pipelines.