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.
References
Link | Resource |
---|---|
https://github.com/onlaj/Piano-LED-Visualizer/blob/6a732caa812c83a807c711f3d091af99209cae7b/webinterface/views_api.py#L970 | Exploit Third Party Advisory |
https://github.com/onlaj/Piano-LED-Visualizer/commit/3f10602323cd8184e1c69a76b815655597bf0ee5 | Patch Third Party Advisory |
https://github.com/onlaj/Piano-LED-Visualizer/issues/350 | Exploit Issue Tracking Patch Third Party Advisory |
https://github.com/onlaj/Piano-LED-Visualizer/pull/351 | Exploit Issue Tracking Patch Third Party Advisory |
https://github.com/onlaj/Piano-LED-Visualizer/security/advisories/GHSA-g78x-q3x8-r6m4 | Exploit Patch Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: GitHub_M
Published: 2022-04-29T13:50:11
Updated: 2022-04-29T13:50:11
Reserved: 2022-02-10T00:00:00
Link: CVE-2022-24900
JSON object: View
NVD Information
Status : Analyzed
Published: 2022-04-29T14:15:11.377
Modified: 2023-06-23T19:35:36.413
Link: CVE-2022-24900
JSON object: View
Redhat Information
No data.