GitHub Workflows security hardening #2927
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Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @Amanieu (or someone else) soon. Please see the contribution instructions for more information. |
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Could you squash commits into one? |
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Done. |
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☔ The latest upstream changes (presumably #2933) made this pull request unmergeable. Please resolve the merge conflicts. |
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Oh sorry, I missed this, could you prefer to rebase over merge? We have the "no-merge" policy. |
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@JohnTitor Sorry for accidentally closing this. I have opened a new PR. #2938 |
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This PR adds explicit permissions section to workflows. This is a security best practice because by default workflows run with extended set of permissions (except from
on: pull_requestfrom external forks). By specifying any permission explicitly all others are set to none. By using the principle of least privilege the damage a compromised workflow can do (because of an injection or compromised third party tool or action) is restricted.It is recommended to have most strict permissions on the top level and grant write permissions on job level case by case.