Debian Security Advisory

DSA-2332-1 python-django -- several issues

Date Reported:
29 Oct 2011
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 641405.
In Mitre's CVE dictionary: CVE-2011-4136, CVE-2011-4137, CVE-2011-4138, CVE-2011-4139, CVE-2011-4140.
More information:

Paul McMillan, Mozilla and the Django core team discovered several vulnerabilities in Django, a Python web framework:

  • CVE-2011-4136

    When using memory-based sessions and caching, Django sessions are stored directly in the root namespace of the cache. When user data is stored in the same cache, a remote user may take over a session.

  • CVE-2011-4137, CVE-2011-4138

    Django's field type URLfield by default checks supplied URL's by issuing a request to it, which doesn't time out. A Denial of Service is possible by supplying specially prepared URL's that keep the connection open indefinately or fill the Django's server memory.

  • CVE-2011-4139

    Django used X-Forwarded-Host headers to construct full URL's. This header may not contain trusted input and could be used to poison the cache.

  • CVE-2011-4140

    The CSRF protection mechanism in Django does not properly handle web-server configurations supporting arbitrary HTTP Host headers, which allows remote attackers to trigger unauthenticated forged requests.

For the oldstable distribution (lenny), this problem has been fixed in version 1.0.2-1+lenny3.

For the stable distribution (squeeze), this problem has been fixed in version 1.2.3-3+squeeze2.

For the testing (wheezy) and unstable distribution (sid), this problem has been fixed in version 1.3.1-1.

We recommend that you upgrade your python-django packages.