Bug 917768 (CVE-2023-46136)

Summary:	<dev-python/werkzeug-{2.3.8,3.0.1}: DoS via malformed multipart data
Product:	Gentoo Security	Reporter:	John Helmert III <ajak>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	IN_PROGRESS ---
Severity:	minor	CC:	mgorny, python
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://github.com/pallets/werkzeug/security/advisories/GHSA-hrfv-mqp8-q5rw
Whiteboard:	B3 [glsa?]
Package list:		Runtime testing required:	---
Bug Depends on:	917771
Bug Blocks:

Description John Helmert III archtester

2023-11-22 23:57:18 UTC

CVE-2023-46136:

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.

Please cleanup.

Comment 1 Michał Górny archtester

2023-11-24 18:48:17 UTC

cleanup done.