Vulnerability Details CVE-2023-27581
github-slug-action is a GitHub Action to expose slug value of GitHub environment variables inside of one's GitHub workflow. Starting in version 4.0.0` and prior to version 4.4.1, this action uses the `github.head_ref` parameter in an insecure way. This vulnerability can be triggered by any user on GitHub on any workflow using the action on pull requests. They just need to create a pull request with a branch name, which can contain the attack payload. This can be used to execute code on the GitHub runners and to exfiltrate any secrets one uses in the CI pipeline. A patched action is available in version 4.4.1. No workaround is available.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.035
EPSS Ranking 87.1%
CVSS Severity
CVSS v3 Score 8.8
References
- https://github.com/rlespinasse/github-slug-action/commit/102b1a064a9b145e56556e22b18b19c624538d94
- https://github.com/rlespinasse/github-slug-action/releases/tag/v4.4.1
- https://github.com/rlespinasse/github-slug-action/security/advisories/GHSA-6q4m-7476-932w
- https://securitylab.github.com/research/github-actions-untrusted-input/
- https://github.com/rlespinasse/github-slug-action/commit/102b1a064a9b145e56556e22b18b19c624538d94
- https://github.com/rlespinasse/github-slug-action/releases/tag/v4.4.1
- https://github.com/rlespinasse/github-slug-action/security/advisories/GHSA-6q4m-7476-932w
- https://securitylab.github.com/research/github-actions-untrusted-input/
Products affected by CVE-2023-27581
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cpe:2.3:a:github-slug-action_project:github-slug-action:4.0.0
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cpe:2.3:a:github-slug-action_project:github-slug-action:4.0.1
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cpe:2.3:a:github-slug-action_project:github-slug-action:4.1.0
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cpe:2.3:a:github-slug-action_project:github-slug-action:4.2.0
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cpe:2.3:a:github-slug-action_project:github-slug-action:4.2.1
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cpe:2.3:a:github-slug-action_project:github-slug-action:4.2.2
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cpe:2.3:a:github-slug-action_project:github-slug-action:4.2.3
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cpe:2.3:a:github-slug-action_project:github-slug-action:4.2.4
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cpe:2.3:a:github-slug-action_project:github-slug-action:4.2.5
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cpe:2.3:a:github-slug-action_project:github-slug-action:4.3.0
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cpe:2.3:a:github-slug-action_project:github-slug-action:4.3.1
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cpe:2.3:a:github-slug-action_project:github-slug-action:4.3.2