Vulnerability Description
The [`tj-actions/verify-changed-files`](https://github.com/tj-actions/verify-changed-files) action allows for command injection in changed filenames, allowing an attacker to execute arbitrary code and potentially leak secrets. The [`verify-changed-files`](https://github.com/tj-actions/verify-changed-files) workflow returns the list of files changed within a workflow execution. This could potentially allow filenames that contain special characters such as `;` which can be used by an attacker to take over the [GitHub Runner](https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners) if the output value is used in a raw fashion (thus being directly replaced before execution) inside a `run` block. By running custom commands, an attacker may be able to steal secrets such as `GITHUB_TOKEN` if triggered on other events than `pull_request`. This has been patched in versions [17](https://github.com/tj-actions/verify-changed-files/releases/tag/v17) and [17.0.0](https://github.com/tj-actions/verify-changed-files/releases/tag/v17.0.0) by enabling `safe_output` by default and returning filename paths escaping special characters for bash environments.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Tj-Actions | Verify-Changed-Files | < 17.0.0 |
Related Weaknesses (CWE)
References
- https://github.com/tj-actions/verify-changed-files/commit/498d3f316f501aa7248506Patch
- https://github.com/tj-actions/verify-changed-files/commit/592e305da041c09a009afaPatch
- https://github.com/tj-actions/verify-changed-files/security/advisories/GHSA-ghm2ExploitMitigationThird Party Advisory
- https://github.com/tj-actions/verify-changed-files/commit/498d3f316f501aa7248506Patch
- https://github.com/tj-actions/verify-changed-files/commit/592e305da041c09a009afaPatch
- https://github.com/tj-actions/verify-changed-files/security/advisories/GHSA-ghm2ExploitMitigationThird Party Advisory
FAQ
What is CVE-2023-52137?
CVE-2023-52137 is a vulnerability with a CVSS score of 7.7 (HIGH). The [`tj-actions/verify-changed-files`](https://github.com/tj-actions/verify-changed-files) action allows for command injection in changed filenames, allowing an attacker to execute arbitrary code and...
How severe is CVE-2023-52137?
CVE-2023-52137 has been rated HIGH with a CVSS base score of 7.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-52137?
Check the references section above for vendor advisories and patch information. Affected products include: Tj-Actions Verify-Changed-Files.