CVE-2023-23969

Name	CVE-2023-23969
Description	In Django 3.2 before 3.2.17, 4.0 before 4.0.9, and 4.1 before 4.1.6, the parsed values of Accept-Language headers are cached in order to avoid repetitive parsing. This leads to a potential denial-of-service vector via excessive memory usage if the raw value of Accept-Language headers is very large.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3306-1
Debian Bugs	1030251

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
python-django (PTS)	bullseye	2:2.2.28-1~deb11u2	fixed
	bullseye (security)	2:2.2.28-1~deb11u6	fixed
	bookworm, bookworm (security)	3:3.2.19-1+deb12u1	fixed
	sid, trixie	3:4.2.20-1	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
python-django	source	buster	1:1.11.29-1+deb10u6	DLA-3306-1
python-django	source	bullseye	2:2.2.28-1~deb11u2
python-django	source	(unstable)	3:3.2.17-1		1030251

https://www.openwall.com/lists/oss-security/2023/02/01/4
https://github.com/django/django/commit/c7e0151fdf33e1b11d488b6f67b94fdf3a30614a (3.2.17)