Path Traversal in Onlaj Piano-Led-Visualizer
CVE-2022-24900
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L.
EPSS exploit prediction
EPSS: 0.084 (94.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.084 · newest: 0.084 · change: 0.000
Affected products
- Onlaj Piano-Led-Visualizer — versions <= 1.3
- Piano Led Visualizer Project
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/onlaj/Piano-LED-Visualizer/security/advisories/GHSA-g78x-q3x8-r6m4 (Exploit, Patch, Third Party Advisory)
- github.com/onlaj/Piano-LED-Visualizer/issues/350 (Exploit, Patch, Third Party Advisory, Issue Tracking)
- github.com/onlaj/Piano-LED-Visualizer/pull/351 (Exploit, Patch, Third Party Advisory, Issue Tracking)
- github.com/onlaj/Piano-LED-Visualizer/commit/3f10602323cd8184e1c69a76b815655597… (Patch, Third Party Advisory)
- github.com/onlaj/Piano-LED-Visualizer/blob/6a732caa812c83a807c711f3d091af99209c… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-24900?
- CVE-2022-24900 is a critical-severity vulnerability in Onlaj Piano-Led-Visualizer, classified under Path Traversal. CVSS score: 9.9/10. Published 2022-04-29.
- How severe is CVE-2022-24900?
- Critical severity. CVSS v3 base score is 9.9 out of 10.
- Is CVE-2022-24900 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.