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Debian: Security update for Django

Jeroen Dekkers and others reported several vulnerabilities in Django, a Python Web framework. 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. 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.

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.

Updated packages are available from security.debian.org.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- -------------------------------------------------------------------------
Debian Security Advisory DSA-2529-1                   security@debian.org
http://www.debian.org/security/                           Thijs Kinkhorst
August 14, 2012                        http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package        : python-django
Vulnerability  : several
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2012-3442 CVE-2012-3443 CVE-2012-3444
Debian Bug     : 683364

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.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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