Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| pallets / werkzeug | affected >= 2.0.0rc1, < 3.0.6 |
| pallets / Quart | affected < 0.20.0 |
CWE
CWE-400, CWE-770
References
- https://github.com/pallets/werkzeug/security/advisories/GHSA-q34m-jh98-gwm2
- https://github.com/pallets/quart/commit/5e78c4169b8eb66b91ead3e62d44721b9e1644ee
- https://github.com/pallets/quart/commit/abb04a512496206de279225340ed022852fbf51f
- https://github.com/pallets/werkzeug/commit/50cfeebcb0727e18cc52ffbeb125f4a66551179b
- https://github.com/pallets/werkzeug/releases/tag/3.0.6
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.