Debian 10: DLA-3306-1 Critical Update: Python-Django DoS Fix

Parsed values of the Accept-Language HTTP headers are cached by
Django order to avoid repetitive parsing. This could have led to a
potential denial-of-service attack via excessive memory usage if the
raw value of Accept-Language headers was very large.

Accept-Language headers are now limited to a maximum length
specifically in order to avoid this issue.

For Debian 10 buster, this problem has been fixed in version
1:1.11.29-1+deb10u6.

We recommend that you upgrade your python-django packages.

For the detailed security status of python-django please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/python-django

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS