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Enforce SSCA policies

Enforce SSCA policies in the CI and CD stages of your Harness pipelines to ensure that your artifacts only contain approved components.

Tutorial

For an end-to-end walkthrough, try this tutorial: Generate SBOM and enforce policies.

Requirements​

To enforce SSCA policies in a Harness pipeline, you need:

Add an SSCA Enforcement step​

You can add the SSCA Enforcement step to either the Build or Deploy stage of a Harness pipeline.

  • In a Build stage, add the SSCA Enforcement step after the artifact (image) has been pushed to an artifact repository.
  • In a Deploy stage, add the SSCA Enforcement step before the deployment step.
info

SSCA Orchestration and Enforcement steps in deploy stage can only be used in the Containerized Step Groups

The SSCA Enforcement step has the following settings:

  • Name: Enter a name for the step.
  • Artifact Type: Select Image.
  • Container Registry: Select the Docker Registry connector that is configured for the Docker-compliant container registry where your artifact is stored, such as Docker Hub, Amazon ECR, or GCR.
  • Image: Enter the repo path (in your container registry) and tag for the relevant image, such as my-docker-repo/my-artifact:latest.
  • Public Key: Select the Harness file secret containing the public key to use to verify the authenticity of the attestation.
  • File Path: Provide the path to your SSCA policy file.
ECR and GCR repos

If you're using Docker-compliant ECR or GCR repositories, you must:

  1. Configure your Docker Registry connector as a valid artifact source.
  2. Use the full URI for the Image in your SSCA Orchestration step, such as 1234567890.dkr.ecr.REGION.amazonaws.com/IMAGE_NAME:TAG.

Run the pipeline​

When the pipeline runs, the SSCA Enforcement step does the following:

  • Verifies the authenticity of the attestation.
  • Applies policies defined in the specified policy file.
  • Records policy violations and shows them on the Artifacts tab on the Execution details page.

SSCA evaluates the components described in the artifact's SBOM against your policy definitions. For a component to pass the evaluation, it must meet these conditions:

  • The component must not be denied based on the rules in the deny_list.
  • The component must be allowed based on the rules in the allow_list.
  • If the allow_list has multiple sections, the component must be allowed by all sections. For example, if the allow_list has licenses and suppliers sections, then the component's license must be allowed according to the licenses section, and the component's supplier must be allowed according to the suppliers section. If the component fails to pass either section, the policy evaluation fails for that component.

All components must meet the conditions described in both the allow_list and deny_list to fully pass the policy evaluation.

You can review policy violations on the Execution details page in Harness. For more information, go to View attestations and violations.