CVE-2024-24762

Description

`python-multipart` is a streaming multipart parser for Python. When using form data, `python-multipart` uses a Regular Expression to parse the HTTP `Content-Type` header, including options. An attacker could send a custom-made `Content-Type` option that is very difficult for the RegEx to process, consuming CPU resources and stalling indefinitely (minutes or more) while holding the main event loop. This means that process can't handle any more requests, leading to regular expression denial of service. This vulnerability has been patched in version 0.0.7.

References

https://github.com/tiangolo/fastapi/releases/tag/0.109.1

https://github.com/tiangolo/fastapi/commit/9d34ad0ee8a0dfbbcce06f76c2d5d851085024fc

https://github.com/encode/starlette/security/advisories/GHSA-93gm-qmq6-w238

https://github.com/encode/starlette/commit/13e5c26a27f4903924624736abd6131b2da80cc5

https://github.com/andrew-d/python-multipart/blob/d3d16dae4b061c34fe9d3c9081d9800c49fc1f7a/multipart/multipart.py#L72-L74

https://github.com/Kludex/python-multipart/security/advisories/GHSA-2jv5-9r88-3w3p

https://github.com/Kludex/python-multipart/commit/20f0ef6b4e4caf7d69a667c54dff57fe467109a4

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3