Home/CVE/Algorithmic complexity vulnerability in the forms library in Django 1.0 before 1.0.4 and 1.1 before 1.1.1 allows remote
CVE

CVE-2009-3695

Algorithmic complexity vulnerability in the forms library in Django 1.0 before 1.0.4 and 1.1 before 1.1.1 allows remote

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.

MEDIUM · CVSS 5 EPSS 0.06201
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  • EPSS percentile: top 9% of all CVEs by exploitation likelihood
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Affected Products & Versions

1
djangoproject djangoall versions
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Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
PyPI django HIGH fixed in 1.0.4
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Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumDjango Framework Exceptions
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Scoring & Timeline

5
MEDIUM · CVSS v2 (legacy) · cve@mitre.org
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This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Published to NVD13 Oct 2009 · 10:30 AM
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References & Sources

10
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
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/36948Vendor Advisory
http://secunia.com/advisories/36968Vendor Advisory
http://www.debian.org/security/2009/dsa-1905
http://www.djangoproject.com/weblog/2009/oct/09/security/PatchVendor Advisory
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