Bug 937946 (CVE-2024-42353)

Summary:	<dev-python/webob-1.8.8: Location header normalization during redirect leads to open redirect
Product:	Gentoo Security	Reporter:	Michał Górny <mgorny>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	CONFIRMED ---
Severity:	normal	CC:	python
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://github.com/Pylons/webob/security/advisories/GHSA-mg3v-6m49-jhp3
Whiteboard:	B4 [glsa?]
Package list:		Runtime testing required:	---
Bug Depends on:	937947
Bug Blocks:

Description Michał Górny archtester

2024-08-15 03:43:45 UTC

When WebOb normalizes the HTTP Location header to include the request hostname, it does so by parsing the URL that the user is to be redirected to with Python's urlparse, and joining it to the base URL. urlparse however treats a // at the start of a string as a URI without a scheme, and then treats the next part as the hostname. urljoin will then use that hostname from the second part as the hostname replacing the original one from the request.

Comment 1 Michał Górny archtester

2024-08-15 09:31:02 UTC

Cleanup done.