[StepSecurity] Apply security best practices

[step-security-bot]

Summary

This pull request is created by StepSecurity at the request of @nlohmann. Please merge the Pull Request to incorporate the requested changes. Please tag @nlohmann on your message if you have any questions related to the PR.

Security Fixes

Pinned Dependencies

GitHub Action tags and Docker tags are mutable. This poses a security risk. GitHub's Security Hardening guide recommends pinning actions to full length commit.

• GitHub Security Guide
• The Open Source Security Foundation (OpenSSF) Security Guide

Harden Runner

Harden-Runner is an open-source security agent for the GitHub-hosted runner to prevent software supply chain attacks. It prevents exfiltration of credentials, detects tampering of source code during build, and enables running jobs without sudo access.

Harden runner usage

You can find link to view insights and policy recommendation in the build log

Please refer to documentation to find more details.

Keeping your actions up to date with Dependabot

With Dependabot version updates, when Dependabot identifies an outdated dependency, it raises a pull request to update the manifest to the latest version of the dependency. This is recommended by GitHub as well as The Open Source Security Foundation (OpenSSF).

• GitHub Security Guide
• The Open Source Security Foundation (OpenSSF) Security Guide

Add Dependency Review Workflow

The Dependency Review Workflow enforces dependency reviews on your pull requests. The action scans for vulnerable versions of dependencies introduced by package version changes in pull requests, and warns you about the associated security vulnerabilities. This gives you better visibility of what's changing in a pull request, and helps prevent vulnerabilities being added to your repository.

• Github Guide about Dependency Review
• Github Guide for Configuring Dependency Review Action

Add OpenSSF Scorecard Workflow

OpenSSF Scorecard is an automated tool that assesses a number of important heuristics ("checks") associated with software security and assigns each check a score of 0-10. You can use these scores to understand specific areas to improve in order to strengthen the security posture of your project.

Scorecard workflow also allows maintainers to display a Scorecard badge on their repository to show off their hard work.

• The Open Source Security Foundation (OpenSSF) Scorecard

Maintain Code Quality with Pre-Commit

Pre-commit is a framework for managing and maintaining multi-language pre-commit hooks. Hooks can be any scripts, code, or binaries that run at any stage of the git workflow. Pre-commit hooks are useful for enforcing code quality, code formatting, and detecting security vulnerabilities.

• Official Pre-commit documentation
• Getting Started guide

Feedback

For bug reports, feature requests, and general feedback; please email [email protected]. To create such PRs, please visit https://app.stepsecurity.io/securerepo.

Signed-off-by: StepSecurity Bot [email protected]

[coveralls]

coverage: 99.634%. remained the same
when pulling 2651f53 on step-security-bot:stepsecurity_remediation_1734280875
into 6a2ae22 on nlohmann:develop.

[nlohmann]

There are some harden-runner steps that need to be removed (Windows, macOS, inside containers), but since a bot wrote this PR, I will need to fix this in a later PR.

Looks good to me.