USN-2469-2: Django regression

4 February 2015

python-django regression

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 12.04 LTS
  • Ubuntu 10.04 LTS

Summary

USN-2469-1 caused a regression in Django.

Software Description

  • python-django - High-level Python web development framework

Details

USN-2469-1 fixed vulnerabilities in Django. The security fix for CVE-2015-0221 introduced a regression on Ubuntu 10.04 LTS and Ubuntu 12.04 LTS when serving static content through GZipMiddleware. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Jedediah Smith discovered that Django incorrectly handled underscores in WSGI headers. A remote attacker could possibly use this issue to spoof headers in certain environments. (CVE-2015-0219)

Mikko Ohtamaa discovered that Django incorrectly handled user-supplied redirect URLs. A remote attacker could possibly use this issue to perform a cross-site scripting attack. (CVE-2015-0220)

Alex Gaynor discovered that Django incorrectly handled reading files in django.views.static.serve(). A remote attacker could possibly use this issue to cause Django to consume resources, resulting in a denial of service. (CVE-2015-0221)

Keryn Knight discovered that Django incorrectly handled forms with ModelMultipleChoiceField. A remote attacker could possibly use this issue to cause a large number of SQL queries, resulting in a database denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 14.10. (CVE-2015-0222)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 12.04 LTS
python-django - 1.3.1-4ubuntu1.15
Ubuntu 10.04 LTS
python-django - 1.1.1-2ubuntu1.16

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References