917768 – (CVE-2023-46136) <dev-python/werkzeug-{2.3.8,3.0.1}: DoS via malformed multipart data

Bug 917768 (CVE-2023-46136) - <dev-python/werkzeug-{2.3.8,3.0.1}: DoS via malformed multipart data

Summary: <dev-python/werkzeug-{2.3.8,3.0.1}: DoS via malformed multipart data

Status:	IN_PROGRESS

Alias:	CVE-2023-46136

Product:	Gentoo Security
Classification:	Unclassified
Component:	Vulnerabilities (show other bugs)
Hardware:	All Linux

Importance:	Normal minor (vote)
Assignee:	Gentoo Security

URL:	https://github.com/pallets/werkzeug/s...
Whiteboard:	B3 [glsa?]
Keywords:

Depends on:	917771
Blocks:
	Show dependency tree

Reported:	2023-11-22 23:57 UTC by John Helmert III
Modified:	2023-11-24 19:32 UTC (History)
CC List:	2 users (show)

See Also:
Package list:
Runtime testing required:	---

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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.