Safeguard your containers with new container signing capability in GitHub Actions
ProductSecuritySafeguard your containers with new container signing capability in GitHub ActionsGitHub has partnered with the OpenSSF and Project Sigstore to add container image signing to our default “Publish Docker Container” workflow. As developers have leaned into cloud native projects for scale and maintainability, the popularity of containers has exploded. With 92% of organizations leveragin
Keeping your GitHub Actions and workflows secure Part 3: How to trust your building blocks
Keeping your GitHub Actions and workflows secure Part 3: How to trust your building blocks Jaroslav Lobacevski This post is the third and final in a series of posts about GitHub Actions security. Part 1, Part 2 In previous blog posts, we discussed possible mistakes and abuse patterns that could lead to the compromise of your GitHub repository. This time, I’ll discuss sometimes less obvious — whose
Security Incident Disclosure
On 18th April 2021, a security researcher identified a vulnerability in our review-cask-pr GitHub Action used on the homebrew-cask and all homebrew-cask-* taps (non-default repositories) in the Homebrew organization and reported it on our HackerOne. Whenever an affected cask tap received a pull request to change only the version of a cask, the review-cask-pr GitHub Action would automatically revie
GitHub Actionsにおけるサプライチェーン攻撃を介したリポジトリ侵害
はじめにGitHubはBug Bountyプログラムを実施しており、その一環として脆弱性の診断行為をセーフハーバーにより許可しています。 本記事は、そのセーフハーバーの基準を遵守した上で調査を行い、結果をまとめたものであり、無許可の脆弱性診断行為を推奨することを意図したものではありません。 GitHub上で脆弱性を発見した場合は、GitHub Security Bug Bountyへ報告してください。 要約GitHub Actionsの仕様上、デフォルトではサプライチェーン攻撃に対する適切な保護が行われないため、特定の条件を満たしたリポジトリを侵害することが出来る。 この問題の影響を受けるリポジトリがどの程度存在するかを調査した所、yay等の広く使われているソフトウェアのリポジトリを含めた多数のリポジトリがこの攻撃に対して脆弱であることがわかった。 調査理由GitHub Actionsを使
Keeping your GitHub Actions and workflows secure Part 2: Untrusted input
Keeping your GitHub Actions and workflows secure Part 2: Untrusted input Jaroslav Lobacevski This post is the second in a series of posts about GitHub Actions security. Part 1, Part 3 We previously discussed the misuse of the pull_request_target trigger within GitHub Actions and workflows. In this follow-up piece, we will discuss possible avenues of abuse that may result in code and command inject
Keeping your GitHub Actions and workflows secure Part 1: Preventing pwn requests
Keeping your GitHub Actions and workflows secure Part 1: Preventing pwn requests Jaroslav Lobacevski This post is the first in a series of posts about GitHub Actions security. Part 2, Part 3 In this article, we’ll discuss some common security malpractices for GitHub Actions and workflows, and how to best avoid them. Our examples are based on real-world GitHub workflow implementation vulnerabilitie
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DevSecOps with Trivy and GitHub Actions