CVE-2009-3695

Name	CVE-2009-3695
Description	Algorithmic complexity vulnerability in the forms library in Django 1.0 before 1.0.4 and 1.1 before 1.1.1 allows remote attackers to cause a denial of service (CPU consumption) via a crafted (1) EmailField (email address) or (2) URLField (URL) that triggers a large amount of backtracking in a regular expression.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
References	DSA-1905-1
NVD severity	medium (attack range: remote)
Debian Bugs	550457

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
python-django (PTS)	jessie	1.7.11-1+deb8u3	fixed
	jessie (security)	1.7.11-1+deb8u7	fixed
	stretch	1:1.10.7-2+deb9u4	fixed
	stretch (security)	1:1.10.7-2+deb9u6	fixed
	buster	1:1.11.21-1	fixed
	bullseye, buster (security)	1:1.11.23-1~deb10u1	fixed
	sid	2:2.2.4-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Debian Bugs
python-django	source	(unstable)	1.1.1-1	medium	550457
python-django	source	etch	(not affected)
python-django	source	lenny	1.0.2-1+lenny2	medium

[etch] - python-django <not-affected> (introduced in 1.0)