python-django - several

Jeroen Dekkers and others reported several vulnerabilities in Django,
a Python Web framework. The Common Vulnerabilities and Exposures
project defines the following issues:

• CVE-2012-3442
  Two functions do not validate the scheme of a redirect target,
  which might allow remote attackers to conduct cross-site scripting
  (XSS) attacks via a data: URL.
• CVE-2012-3443
  The ImageField class completely decompresses image data during image
  validation, which allows remote attackers to cause a denial of service
  (memory consumption) by uploading an image file.
• CVE-2012-3444
  The get_image_dimensions function in the image-handling functionality
  uses a constant chunk size in all attempts to determine dimensions,
  which allows remote attackers to cause a denial of service (process
  or thread consumption) via a large TIFF image.

For the stable distribution (squeeze), this problem has been fixed in
version 1.2.3-3+squeeze3.

For the unstable distribution (sid), this problem has been fixed in
version 1.4.1-1.

We recommend that you upgrade your python-django packages.