CVE-2009-3695 Information

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.

Reference

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=550457 http://groups.google.com/group/django-users/browse_thread/thread/15df9e45118dfc51/ http://secunia.com/advisories/36948 http://secunia.com/advisories/36968 http://www.debian.org/security/2009/dsa-1905 http://www.djangoproject.com/weblog/2009/oct/09/security/ http://www.openwall.com/lists/oss-security/2009/10/13/6 http://www.securityfocus.com/bid/36655 http://www.vupen.com/english/advisories/2009/2871 https://exchange.xforce.ibmcloud.com/vulnerabilities/53727 django-emailfield-urlfield-dos(53727)