• What Is Allstar?

• Help! I'm getting issues created by Allstar and I don't want them!

• Background
• Org-Level Options
• Installation Options
  • Quickstart Installation
  • Manual Installation

• Actions
• Policies

• Configuration Definitions
• Example Configurations

• Contribute Policies

Allstar is a GitHub App installed on organizations or repositories to set and enforce security policies. Its goal is to be able to continuously monitor and detect any GitHub setting or repository file contents that may be risky or do not follow security best practices. If Allstar finds a repository to be out of compliance, it will take an action such as create an issue or restore security settings.

The specific policies are intended to be highly configurable, to try to meet the needs of different project communities and organizations. Also, developing and contributing new policies is intended to be easy.

Allstar is developed under the OpenSSF organization, as a part of the Securing Critical Projects Working Group. The OpenSSF runs an instance of Allstar here for anyone to install and use on their GitHub organizations. However, Allstar can be run by anyone if need be, see the operator docs for more details.

If you're getting unwanted issues created by Allstar, follow these directions to opt out.

Allstar is highly configurable. There are three main levels of controls:

• Org level: Organization administrators can choose to enable Allstar on:
  • all repositories in the org;
  • most repositories, except some that are opted out;
  • just a few repositories that are opted in.

These configurations are done in the organization's .allstar repository.

• Repo level: Repository maintainers in an organization that uses Allstar can choose to opt their repository in or out of organization-level enforcements. Note: these repo-level controls are only functional when "repo override" is allowed in the org-level settings. These configurations are done in the repository's .allstar directory.

• Policy level: Administrators or maintainers can choose which policies are enabled on specific repos and which actions Allstar takes when a policy is violated. These configurations are done in a policy yaml file in either the organization's .allstar repository (admins), or the repository's .allstar directory (maintainers).

Before installing Allstar at the org level, you should decide approximately how many repositories you want Allstar to run on. This will help you choose between the Opt-In and Opt-Out strategies.

• The Opt In strategy allows you to manually add the repositories you'd like Allstar to run on. If you do not specify any repositories, Allstar will not run despite being installed. Choose the Opt In strategy if you want to enforce policies on only a small number of your total repositories, or want to try out Allstar on a single repository before enabling it on more.

• The Opt Out strategy (recommended) enables Allstar on all repositories and allows you to manually select the repositories to opt out of Allstar enforcements. You can also choose to opt out all public repos, or all private repos. Choose this option if you want to run Allstar on all repositories in an organization, or want to opt out only a small number of repositories or specific type (i.e., public vs. private) of repository.

Both the Quickstart and Manual Installation options involve installing the Allstar app. You may review the permissions requested. The app asks for read access to most settings and file contents to detect security compliance. It requests write access to issues and checks so that it can create issues and allow the block action.

This installation option will enable Allstar using the Opt Out strategy on all repositories in your organization. All current policies will be enabled, and Allstar will alert you of policy violations by filing an issue. This is the quickest and easiest way to start using Allstar, and you can still change any configurations later.

Effort: very easy

Steps:

1. Install the Allstar app (choose "All Repositories" under Repository Access, even if you plan to disable Allstar on some repositories later)
2. Fork the sample repository

That's it! All current Allstar policies are now enabled on all your repositories. Allstar will create an issue if a policy is violated.

To change any configurations, see the manual installation directions.

This installation option will walk you through creating configuration files according to either the Opt In or Opt Out strategy. This option provides more granular control over configurations right from the start.

Effort: moderate

Steps:

1. Install the Allstar app (choose "All Repositories" under Repository Access, even if you don't plan to use Allstar on all your repositories)
2. Follow the manual installation directions to create org-level or repository-level Allstar config files and individual policy files.

Each policy can be configured with an action that Allstar will take when it detects a repository to be out of compliance.

• log: This is the default action, and actually takes place for all actions. All policy run results and details are logged. Logs are currently only visible to the app operator, plans to expose these are under discussion.
• issue: This action creates a GitHub issue. Only one issue is created per policy, and the text describes the details of the policy violation. If the issue is already open, it is pinged with a comment every 24 hours (not currently user configurable). Once the violation is addressed, the issue will be automatically closed by Allstar within 5-10 minutes.
• fix: This action is policy specific. The policy will make the changes to the GitHub settings to correct the policy violation. Not all policies will be able to support this (see below).

Proposed, but not yet implemented actions. Definitions will be added in the future.

• block: Allstar can set a GitHub Status Check and block any PR in the repository from being merged if the check fails.
• email: Allstar would send an email to the repository administrator(s).
• rpc: Allstar would send an rpc to some organization-specific system.

Two settings are available to configure the issue action:

• issueLabel is available at the organization and repository level. Setting it will override the default allstar label used by Allstar to identify its issues.

• issueRepo is available at the organization level. Setting it will force all issues created in the organization to be created in the repository specified.

Similar to the Allstar app enable configuration, all policies are enabled and configured with a yaml file in either the organization's .allstar repository, or the repository's .allstar directory. As with the app, policies are opt-in by default, also the default log action won't produce visible results. A simple way to enable all policies is to create a yaml file for each policy with the contents:

optConfig:
  optOutStrategy: true
action: issue

The details of how the fix action works for each policy is detailed below. If omitted below, the fix action is not applicable.

This policy's config file is named branch_protection.yaml, and the config definitions are here.

The branch protection policy checks that GitHub's branch protection settings are setup correctly according to the specified configuration. The issue text will describe which setting is incorrect. See GitHub's documentation for correcting settings.

The fix action will change the branch protection settings to be in compliance with the specified policy configuration.

This policy's config file is named binary_artifacts.yaml, and the config definitions are here.

This policy incorporates the check from scorecard. Remove the binary artifact from the repository to achieve compliance. As the scorecard results can be verbose, you may need to run scorecard itself to see all the detailed information.

This policy's config file is named outside.yaml, and the config definitions are here.

This policy checks if any Outside Collaborators have either administrator(default) or push(optional) access to the repository. Only organization members should have this access, as otherwise untrusted members can change admin level settings and commit malicious code. Also, by default, all repositories must have an organization user or group assigned as an Administrator.

This policy's config file is named security.yaml, and the config definitions are here.

This policy checks that the repository has a security policy file in SECURITY.md and that it is not empty. The created issue will have a link to the GitHub tab that helps you commit a security policy to your repository.

• Ensure dependabot is enabled.
• Check that dependencies are pinned/frozen.
• More checks from scorecard.

See this repo as an example of Allstar config being used. As the organization administrator, consider a README.md with some information on how Allstar is being used in your organization.

• Organization level enable configuration
• Repository Override enable configuration

By default, org-level configuration files, such as the allstar.yaml file above, are expected to be in a .allstar repository. If this repository does not exist, then the .github repository allstar directory is used as a secondary location. To clarify, for allstar.yaml:

This is also true for the org-level configuration files for the individual policies, as described below.

Interface definition.

Both the SECURITY.md and Outside Collaborators policies are quite simple to understand and good examples to copy.