Versions mentioned in the description apply to the upstream
Remediation section below for
Ubuntu:16.04 relevant versions.
Django before 1.8.x before 1.8.16, 1.9.x before 1.9.11, and 1.10.x before 1.10.3, when settings.DEBUG is True, allow remote attackers to conduct DNS rebinding attacks by leveraging failure to validate the HTTP Host header against settings.ALLOWED_HOSTS.
python-django to version 1.8.7-1ubuntu5.4 or higher.