Debian: DSA-2755-2 Moderate: Python-Django Path Disclosure Vulnerability

debian

September 11, 2013

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

Topics Covered

security advisory moderate debian directory traversal python-django

Summary

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.

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