WebKit in Apple iOS before 10, iTunes before 12.5.1 on Windows, and Safari before 10 allows remote attackers to conduct DNS rebinding attacks against non-HTTP Safari sessions by leveraging HTTP/0.9 support.
lists.apple.com/archives/security-announce/2016/Sep/msg00007.html
lists.apple.com/archives/security-announce/2016/Sep/msg00008.html
lists.apple.com/archives/security-announce/2016/Sep/msg00012.html
www.securityfocus.com/bid/93066
www.securitytracker.com/id/1036854
support.apple.com/HT207143
support.apple.com/HT207157
support.apple.com/HT207158