Vulnerability Description
Werkzeug is a comprehensive WSGI web application library. In versions on the 3.x branch prior to 3.0.1 and on the 2.x branch prior to 2.3.8, if an upload of a file that starts with CR or LF and then is followed by megabytes of data without these characters: all of these bytes are appended chunk by chunk into internal bytearray and lookup for boundary is performed on growing buffer. This allows an attacker to cause a denial of service by sending crafted multipart data to an endpoint that will parse it. The amount of CPU time required can block worker processes from handling legitimate requests. This vulnerability has been patched in version 3.0.1 and 2.3.8.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Palletsprojects | Werkzeug | < 2.3.8 |
Related Weaknesses (CWE)
References
- https://github.com/pallets/werkzeug/commit/f3c803b3ade485a45f12b6d6617595350c0f0Patch
- https://github.com/pallets/werkzeug/security/advisories/GHSA-hrfv-mqp8-q5rwVendor Advisory
- https://github.com/pallets/werkzeug/commit/f3c803b3ade485a45f12b6d6617595350c0f0Patch
- https://github.com/pallets/werkzeug/security/advisories/GHSA-hrfv-mqp8-q5rwVendor Advisory
- https://security.netapp.com/advisory/ntap-20231124-0008/Third Party Advisory
FAQ
What is CVE-2023-46136?
CVE-2023-46136 is a vulnerability with a CVSS score of 8.0 (HIGH). Werkzeug is a comprehensive WSGI web application library. In versions on the 3.x branch prior to 3.0.1 and on the 2.x branch prior to 2.3.8, if an upload of a file that starts with CR or LF and then i...
How severe is CVE-2023-46136?
CVE-2023-46136 has been rated HIGH with a CVSS base score of 8.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-46136?
Check the references section above for vendor advisories and patch information. Affected products include: Palletsprojects Werkzeug.