python-django - security update

Several vulnerabilities were discovered in Django, a high-level Python
web development framework. The Common Vulnerabilities and Exposures
project identifies the following problems:

• CVE-2015-0219
  Jedediah Smith reported that the WSGI environ in Django does not
  distinguish between headers containing dashes and headers containing
  underscores. A remote attacker could use this flaw to spoof WSGI
  headers.
• CVE-2015-0220
  Mikko Ohtamaa discovered that the django.util.http.is_safe_url()
  function in Django does not properly handle leading whitespaces in
  user-supplied redirect URLs. A remote attacker could potentially use
  this flaw to perform a cross-site scripting attack.
• CVE-2015-0221
  Alex Gaynor reported a flaw in the way Django handles reading files
  in the django.views.static.serve() view. A remote attacker could
  possibly use this flaw to mount a denial of service via resource
  consumption.

For the stable distribution (wheezy), these problems have been fixed in
version 1.4.5-1+deb7u9.

For the upcoming stable distribution (jessie), these problems have been
fixed in version 1.7.1-1.1.

For the unstable distribution (sid), these problems have been fixed in
version 1.7.1-1.1.

We recommend that you upgrade your python-django packages.