python-django -- directory traversal

ID DSA-2755
Type debian
Reporter Debian
Modified 2013-09-11T00:00:00


Rainer Koirikivi discovered a directory traversal vulnerability with ssi template tags in python-django, a high-level Python web development framework.

It was shown that the handling of the ALLOWED_INCLUDE_ROOTS setting, used to represent allowed prefixes for the {% ssi %} template tag, is vulnerable to a directory traversal attack, by specifying a file path which begins as the absolute path of a directory in ALLOWED_INCLUDE_ROOTS, and then uses relative paths to break free.

To exploit this vulnerability an attacker must be in a position to alter templates on the site, or the site to be attacked must have one or more templates making use of the ssi tag, and must allow some form of unsanitized user input to be used as an argument to the ssi tag.

For the oldstable distribution (squeeze), this problem has been fixed in version 1.2.3-3+squeeze7.

For the stable distribution (wheezy), this problem has been fixed in version 1.4.5-1+deb7u3.

For the unstable distribution (sid), this problem will be fixed soon.

We recommend that you upgrade your python-django packages.