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PYSEC-2009-4

Details

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.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI / django

Introduced in: 1.0 Fixed in: 1.0.4

Fix pip install --upgrade 'django>=1.0.4'

References

http://www.securityfocus.com/bid/36655 [WEB]
http://groups.google.com/group/django-users/browse_thread/thread/15df9e45118dfc51/ [WEB]
http://secunia.com/advisories/36948 [ADVISORY]
http://www.debian.org/security/2009/dsa-1905 [ADVISORY]
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=550457 [WEB]
http://www.vupen.com/english/advisories/2009/2871 [ADVISORY]
http://www.djangoproject.com/weblog/2009/oct/09/security/ [ARTICLE]
http://secunia.com/advisories/36968 [ADVISORY]
http://www.openwall.com/lists/oss-security/2009/10/13/6 [WEB]
https://exchange.xforce.ibmcloud.com/vulnerabilities/53727 [WEB]
https://github.com/advisories/GHSA-p6m5-h7pp-v2x5 [ADVISORY]