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TITLE:
Django forms Library Regular Expressions Denial of Service
Vulnerability

SECUNIA ADVISORY ID:
SA36948

VERIFY ADVISORY:
http://secunia.com/advisories/36948/

DESCRIPTION:
A vulnerability has been reported in Django, which can be exploited
by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error within the regular
expressions used for validation of the "EmailField" or "URLField"
form fields in Django's forms library. This can be exploited to cause
a DoS due to high CPU consumption via specially crafted email
addresses or URLs.

The vulnerability is reported in version 1.0 and 1.1.

SOLUTION:
Update to version 1.0.4 or 1.1.1.

Django 1.0.4:
http://www.djangoproject.com/download/1.0.4/tarball/

Django 1.1.1:
http://www.djangoproject.com/download/1.1.1/tarball/

PROVIDED AND/OR DISCOVERED BY:
davisd

ORIGINAL ADVISORY:
http://www.djangoproject.com/weblog/2009/oct/09/security/
http://groups.google.com/group/django-users/browse_thread/thread/15df9e45118dfc51/
http://code.djangoproject.com/ticket/11198

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