mDNSResponder in Apple OS X before 10.12, when VMnet.framework is used, arranges for a DNS proxy to listen on all interfaces, which allows remote attackers to obtain sensitive information by sending a DNS query to an unintended interface.
https://support.apple.com/HT207170
http://www.securitytracker.com/id/1036858
http://www.securityfocus.com/bid/93055
http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html