Vulnerability Description
Piano LED Visualizer is software that allows LED lights to light up as a person plays a piano connected to a computer. Version 1.3 and prior are vulnerable to a path traversal attack. The `os.path.join` call is unsafe for use with untrusted input. When the `os.path.join` call encounters an absolute path, it ignores all the parameters it has encountered till that point and starts working with the new absolute path. Since the "malicious" parameter represents an absolute path, the result of `os.path.join` ignores the static directory completely. Hence, untrusted input is passed via the `os.path.join` call to `flask.send_file` can lead to path traversal attacks. A patch with a fix is available on the `master` branch of the GitHub repository. This can also be fixed by preventing flow of untrusted data to the vulnerable `send_file` function. In case the application logic necessiates this behaviour, one can either use the `flask.safe_join` to join untrusted paths or replace `flask.send_file` calls with `flask.send_from_directory` calls.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Piano Led Visualizer Project | Piano Led Visualizer | <= 1.3 |
Related Weaknesses (CWE)
References
- https://github.com/onlaj/Piano-LED-Visualizer/blob/6a732caa812c83a807c711f3d091aExploitThird Party Advisory
- https://github.com/onlaj/Piano-LED-Visualizer/commit/3f10602323cd8184e1c69a76b81PatchThird Party Advisory
- https://github.com/onlaj/Piano-LED-Visualizer/issues/350ExploitIssue TrackingPatch
- https://github.com/onlaj/Piano-LED-Visualizer/pull/351ExploitIssue TrackingPatch
- https://github.com/onlaj/Piano-LED-Visualizer/security/advisories/GHSA-g78x-q3x8ExploitPatchThird Party Advisory
- https://github.com/onlaj/Piano-LED-Visualizer/blob/6a732caa812c83a807c711f3d091aExploitThird Party Advisory
- https://github.com/onlaj/Piano-LED-Visualizer/commit/3f10602323cd8184e1c69a76b81PatchThird Party Advisory
- https://github.com/onlaj/Piano-LED-Visualizer/issues/350ExploitIssue TrackingPatch
- https://github.com/onlaj/Piano-LED-Visualizer/pull/351ExploitIssue TrackingPatch
- https://github.com/onlaj/Piano-LED-Visualizer/security/advisories/GHSA-g78x-q3x8ExploitPatchThird Party Advisory
FAQ
What is CVE-2022-24900?
CVE-2022-24900 is a vulnerability with a CVSS score of 9.9 (CRITICAL). Piano LED Visualizer is software that allows LED lights to light up as a person plays a piano connected to a computer. Version 1.3 and prior are vulnerable to a path traversal attack. The `os.path.joi...
How severe is CVE-2022-24900?
CVE-2022-24900 has been rated CRITICAL with a CVSS base score of 9.9/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2022-24900?
Check the references section above for vendor advisories and patch information. Affected products include: Piano Led Visualizer Project Piano Led Visualizer.