Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Github-Slug-Action Project | Github-Slug-Action | >= 4.0.0, < 4.4.1 |
Related Weaknesses (CWE)
References
- https://github.com/rlespinasse/github-slug-action/commit/102b1a064a9b145e56556e2Patch
- https://github.com/rlespinasse/github-slug-action/releases/tag/v4.4.1Release Notes
- https://github.com/rlespinasse/github-slug-action/security/advisories/GHSA-6q4m-Vendor Advisory
- https://securitylab.github.com/research/github-actions-untrusted-input/ExploitThird Party Advisory
- https://github.com/rlespinasse/github-slug-action/commit/102b1a064a9b145e56556e2Patch
- https://github.com/rlespinasse/github-slug-action/releases/tag/v4.4.1Release Notes
- https://github.com/rlespinasse/github-slug-action/security/advisories/GHSA-6q4m-Vendor Advisory
- https://securitylab.github.com/research/github-actions-untrusted-input/ExploitThird Party Advisory
FAQ
What is CVE-2023-27581?
CVE-2023-27581 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 ...
How severe is CVE-2023-27581?
CVE-2023-27581 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-27581?
Check the references section above for vendor advisories and patch information. Affected products include: Github-Slug-Action Project Github-Slug-Action.