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.
www.debian.org/security/2017/dsa-3835
www.securityfocus.com/bid/94068
www.securitytracker.com/id/1037159
www.ubuntu.com/usn/USN-3115-1
lists.fedoraproject.org/archives/list/[email protected]/message/OG5ROMUPS6C7BXELD3TAUUH7OBYV56WQ/
lists.fedoraproject.org/archives/list/[email protected]/message/QXDKJYHN74BWY3P7AR2UZDVJREQMRE6S/
www.djangoproject.com/weblog/2016/nov/01/security-releases/