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aabouzaid / scorecard-action

Official GitHub Action for OpenSSF Scorecard.

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Scorecards' GitHub action

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Official GitHub Action for OSSF Scorecards.

The Scorecards GitHub Action is free for all public repositories. Private repositories are supported if they have GitHub Advanced Security. Private repositories without GitHub Advanced Security can run Scorecards from the command line by following the standard installation instructions.

Breaking changes in v2

Starting from scorecard-action:v2, GITHUB_TOKEN permissions or job permissions needs to include id-token: write for publish_results: true. This is needed to access GitHub's OIDC token which verifies the authenticity of the result when publishing it. See details here

If publishing results, scorecard-action:v2 also imposes new requirements on both the workflow and the job running the ossf/scorecard-action step. For full details see here.

Installation

View Results

Manual Action Setup

"Classic" PAT Requirements and Risks

Reporting vulnerabilities

The following GitHub triggers are supported: push, schedule (default branch only).

The pull_request and workflow_dispatch triggers are experimental.

Running the Scorecard action on a fork repository is not supported.

GitHub Enterprise repositories are not supported.

Installation

Workflow Setup (Required)

  1. From your GitHub project's main page, click “Security” in the top ribbon.

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  1. Select “Code scanning”.

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  1. Then click "Add tool".

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  1. Choose the "OSSF Scorecard" from the list of workflows, and then click “Configure”.

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  1. Commit the changes.

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Authentication with Fine-grained PAT (optional)

Scorecard can run successfully with the workflow's default GITHUB_TOKEN. However, the Branch-Protection and (experimental) Webhooks checks require additional data that isn't accessible with that token.

We therefore suggest you create a fine-grained Personal Access Token (PAT) that Scorecard may use for authentication.

  1. Create a fine-grained Personal Access Token with the following settings:

    • Token name: OpenSSF Scorecard Action - $USER_NAME/$REPO_NAME> (Note: replace $USER_NAME/$REPO_NAME with the names of your organization and repository so you can keep track of your tokens.)
    • Expiration: Set Custom and then set the date to exactly a year in the future (the maximum allowed)
    • Repository Access: Only select repositories and select the desired repository. Alternatively, set All repositories if you wish to use the same token for all your repositories.
    • Repository Permissions:
      • Administration: Read-only: Required to read Branch-Protection settings.
      • Metadata: Read-only will be automatically set when you set Administration
      • Webhooks: Read-only: (Optional) required for the experimental Webhook check.

    Disclaimer: Scorecard uses these permissions solely to learn about the project's branch protection rules and webhooks. However, the token can read many of the project's settings (for a full list, see the queries marked (read) in GitHub's documentation).

    "Classic" tokens with repo scope also work. However, these carry significantly higher risks compared to fine-grained PATs (see "Classic" Personal Access Token (PAT) Requirements and Risks) and are therefore strongly discouraged.

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  2. Copy the token value.

  3. Create a new repository secret with the following settings (Warning: GitHub encrypted secrets are accessible by all the workflows and maintainers of a repository.):

    • Name: SCORECARD_TOKEN
    • Value: the value of the token created in step 1 above.

    Note that fine-grained tokens expire after one year. You'll receive an email from GitHub when your token is about to expire, at which point you must regenerate it. Make sure to update the token string in your repository's secrets.

  4. When you call the ossf/scorecard-action in your workflow, pass the token as repo-token: ${{ secrets.SCORECARD_TOKEN }}.

View Results

The workflow is preconfigured to run on every repository contribution. After making a code change, you can view the results for the change either through the Scorecard Badge, Code Scanning Alerts or GitHub Workflow Runs.

REST API

Starting with scorecard-action:v2, users can use a REST API to query their latest run results. This requires setting publish_results: true for the action and enabling id-token: write permission for the job (needed to access GitHub OIDC token). The API is available here: https://api.securityscorecards.dev.

Scorecard Badge

Starting with scorecard-action:v2, users can add a Scorecard Badge to their README to display the latest status of their Scorecard results. This requires setting publish_results: true for the action and enabling id-token: write permission for the job (needed to access GitHub OIDC token). The badge is updated on every run of scorecard-action and points to the latest result. To add a badge to your README, copy and paste the below line, and replace the {owner} and {repo} parts.

[![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/{owner}/{repo}/badge)](https://securityscorecards.dev/viewer/?uri=github.com/{owner}/{repo})

Once this badge is added, clicking on the badge will take users to the latest run result of Scorecard.

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Code Scanning Alerts

A list of results is accessible by going in the Security tab and clicking "Code Scanning Alerts" (it can take a couple minutes for the run to complete and the results to show up). Click on the individual alerts for more information, including remediation instructions. You will need to click "Show more" to expand the full remediation instructions.

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Verify Runs

The workflow is preconfigured to run on every repository contribution.

To verify that the Action is running successfully, click the repository's Actions tab to see the status of all recent workflow runs. This tab will also show the logs, which can help you troubleshoot if the run failed.

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Troubleshooting

If the run has failed, the most likely reason is an authentication failure. Confirm that the Personal Access Token is saved as an encrypted secret within the same repository (see Authentication). Also confirm that the PAT is still valid and hasn't expired or been revoked.

If you have a valid PAT saved as an encrypted secret and the run is still failing, confirm that you have not made any changes to the workflow yaml file that affected the syntax. Review the workflow example and reset to the default values if necessary.

Manual Action Setup

If you prefer to manually set up the Scorecards GitHub Action, you will need to set up a workflow file.

First, create a new file in this location: [yourrepo]/.github/workflows/scorecards.yml. Then use the input values below.

Inputs

Name Required Description
result_file yes The file that contains the results.
result_format yes The format in which to store the results [json | sarif]. For GitHub's scanning dashboard, select sarif.
repo_token no PAT token with write repository access. Follow these steps to create it.
publish_results recommended This will allow you to display a badge on your repository to show off your hard work. See details here.

Publishing Results

The Scorecard team runs a weekly scan of public GitHub repositories in order to track the overall security health of the open source ecosystem. The results of the scans are publicly available. Setting publish_results: true replaces the results of the team's weekly scans with your own scan results, helping us scale by cutting down on repeated workflows and GitHub API requests. This option is also needed to enable badges on the repository.

Workflow Restrictions

If publishing results, our API enforces certain rules on the producing workflow, which may reject the results and cause the Scorecard Action run to fail. We understand that this is restrictive, but currently it's necessary to ensure the integrity of our API dataset, since GitHub workflow steps run in the same environment as the job they belong to. If possible, we will work on making this feature more flexible so we can drop this requirement in the future.

Global workflow restrictions

  • The workflow can't contain top level env vars or defaults.
  • No workflow level write permissions.
  • Only the job with ossf/scorecard-action can use id-token: write permissions.

Restrictions on the job containing ossf/scorecard-action

  • No job level env vars or defaults.
  • No containers or services
  • The job should run on one of the Ubuntu hosted runners
  • The steps running in this job must belong to this approved list of GitHub actions.
    • "actions/checkout"
    • "actions/upload-artifact"
    • "github/codeql-action/upload-sarif"
    • "ossf/scorecard-action"
    • "step-security/harden-runner"

Uploading Artifacts

The Scorecards Action uses the artifact uploader action to upload results in SARIF format to the Actions tab. These results are available to anybody for five days after the run to help with debugging. To disable the upload, comment out the Upload Artifact value in the Workflow Example.

Note: if you disable this option, the results of the Scorecards Action run will be only available to people with write access or more. You can find the results on the Security tab scanning dashboard).

Workflow Example

name: Scorecard analysis workflow
on:
  # Only the default branch is supported.
  branch_protection_rule:
  schedule:
    # Weekly on Saturdays.
    - cron: '30 1 * * 6'
  push:
    branches: [ main, master ]

# Declare default permissions as read only.
permissions: read-all

jobs:
  analysis:
    name: Scorecard analysis
    runs-on: ubuntu-latest
    permissions:
      # Needed if using Code scanning alerts
      security-events: write
      # Needed for GitHub OIDC token if publish_results is true
      id-token: write

    steps:
      - name: "Checkout code"
        uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # v3.5.2
        with:
          persist-credentials: false

      - name: "Run analysis"
        uses: ossf/scorecard-action@80e868c13c90f172d68d1f4501dee99e2479f7af # v2.1.3
        with:
          results_file: results.sarif
          results_format: sarif
          # (Optional) fine-grained personal access token. Uncomment the `repo_token` line below if:
          # - you want to enable the Branch-Protection check on a *public* repository, or
          # To create the PAT, follow the steps in https://github.com/ossf/scorecard-action#authentication-with-fine-grained-pat-optional.
          # repo_token: ${{ secrets.SCORECARD_TOKEN }}

          # Publish the results for public repositories to enable scorecard badges. For more details, see
          # https://github.com/ossf/scorecard-action#publishing-results.
          # For private repositories, `publish_results` will automatically be set to `false`, regardless
          # of the value entered here.
          publish_results: true

      # Upload the results as artifacts (optional). Commenting out will disable uploads of run results in SARIF
      # format to the repository Actions tab.
      - name: "Upload artifact"
        uses: actions/upload-artifact@0b7f8abb1508181956e8e162db84b466c27e18ce # v3.1.2
        with:
          name: SARIF file
          path: results.sarif
          retention-days: 5

      # required for Code scanning alerts
      - name: "Upload SARIF results to code scanning"
        uses: github/codeql-action/upload-sarif@83f0fe6c4988d98a455712a27f0255212bba9bd4 # v2.3.6
        with:
          sarif_file: results.sarif

"Classic" Personal Access Token (PAT) Requirements and Risks

Certain features require a Personal Access Token (PAT). We recommend you use a fine-grained token as described in Authentication. A "classic" PAT also works, but we strongly discourage its use.

Due to a limitation of the "classic" tokens' permission model, the PAT needs write permission to the repository through the repo scope. The PAT will be stored as a GitHub encrypted secret and be accessible by all of the repository's workflows and maintainers. This means another maintainer on your project could potentially use the token to impersonate you. If there is an exploitable bug in a workflow with write permissions, an external contributor could potentially exploit it to extract the PAT.

The only benefit of a "classic" PAT is that it can be set to never expire. However, we believe this does not outweigh the significantly higher risk of "classic" PATs compared to fine-grained PATs.

Reporting vulnerabilities

If you find a vulnerability, please report it to us! See SECURITY.md for more information.

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Official GitHub Action for OpenSSF Scorecard.

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