Vulnerability Monitor

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CVE-2024-49767

Werkzeug is a Web Server Gateway Interface web application library. Applications using `werkzeug.formparser.MultiPartParser` corresponding to a version of Werkzeug prior to 3.0.6 to parse `multipart/form-data` requests (e.g. all flask applications) are vulnerable to a relatively simple but effective resource exhaustion (denial of service) attack. A specifically crafted form submission request can cause the parser to allocate and block 3 to 8 times the upload size in main memory. There is no upper limit; a single upload at 1 Gbit/s can exhaust 32 GB of RAM in less than 60 seconds. Werkzeug version 3.0.6 fixes this issue.

Published

2024-10-25T20:15:04.530

Last Modified

2025-01-03T12:15:26.257

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

Weaknesses

Type: Primary
CWE-400
CWE-770

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	palletsprojects	quart	< 0.19.7	Yes
Application	palletsprojects	werkzeug	< 3.0.6	Yes

References

https://github.com/pallets/quart/commit/5e78c4169b8eb66b91ead3e62d44721b9e1644ee Patch ([email protected])
https://github.com/pallets/quart/commit/abb04a512496206de279225340ed022852fbf51f ([email protected])
https://github.com/pallets/werkzeug/commit/50cfeebcb0727e18cc52ffbeb125f4a66551179b Patch ([email protected])
https://github.com/pallets/werkzeug/releases/tag/3.0.6 Release Notes ([email protected])
https://github.com/pallets/werkzeug/security/advisories/GHSA-q34m-jh98-gwm2 Vendor Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20250103-0007/ (af854a3a-2127-422b-91ae-364da2661108)