CVE-2013-1443 Django Denial of Service Vulnerability in the authentication framework

Medium 5.0 Published Updated

Remote attackers can cause denial of service via CPU exhaustion by submitting long passwords to the Django authentication framework.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2013-1443?

CVE-2013-1443 is a medium-severity denial of service vulnerability in Djangoproject Django, published on 23 Sep 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The authentication framework (django.contrib.auth) in Django 1.4.x before 1.4.8, 1.5.x before 1.5.4, and 1.6.x before 1.6 beta 4 allows remote attackers to cause a denial of service (CPU consumption) via a long password which is then hashed.

Weakness: CWE-287

Which versions are affected by CVE-2013-1443?

5 open source packages ship an affected version, including django and Django. It affects 1 product.

PackageAffectedFixed in
django PyPIFrom 1.41.4.8, 1.5.4
django PyPIFrom 1.41.4.8
django PyPIFrom 1.51.5.4
Django PyPIFrom 1.41.4.8
Django PyPIFrom 1.51.5.4

Products include Djangoproject Django.

How do I fix CVE-2013-1443?

Upgrade django to a fixed version for your release line: 1.4.8 or 1.5.4.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2013-1443 being exploited?

There is no known exploitation of CVE-2013-1443 in the wild and no public exploit code.

All Djangoproject Django vulnerabilities

Sources

Also known as DEBIAN-CVE-2013-1443, DSA-2758-1, GHSA-4c42-4rxm-x6qf, PYSEC-2013-18.

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