Werkzeug is a comprehensive WSGI web application library. 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.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2023-10-24T23:48:56.960Z
Updated: 2024-08-02T20:37:39.469Z
Reserved: 2023-10-16T17:51:35.574Z
Link: CVE-2023-46136
Vulnrichment
No data.
NVD
Status : Modified
Published: 2023-10-25T18:17:36.753
Modified: 2024-11-21T08:27:57.400
Link: CVE-2023-46136
Redhat