CVE-2024-42353

Name	CVE-2024-42353
Description	WebOb provides objects for HTTP requests and responses. 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. This vulnerability is patched in WebOb version 1.8.8.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1078879

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
python-webob (PTS)	bullseye	1:1.8.6-1.1	vulnerable
	bookworm	1:1.8.6-3	vulnerable
	sid, trixie	1:1.8.7-3	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
python-webob	source	(unstable)	(unfixed)			1078879

Notes

[bookworm] - python-webob <no-dsa> (Minor issue)
[bullseye] - python-webob <postponed> (Minor issue)
https://github.com/Pylons/webob/security/advisories/GHSA-mg3v-6m49-jhp3
Fixed by: https://github.com/Pylons/webob/commit/f689bcf4f0a1f64f1735b1d5069aef5be6974b5b (1.8.8)