WebKit in Apple iOS before 9 does not properly restrict the availability of Performance API times, which allows remote attackers to obtain sensitive information about the browser history, mouse movement, or network traffic via crafted JavaScript code.
https://support.apple.com/HT205265
https://support.apple.com/HT205212
http://www.securitytracker.com/id/1033609
http://www.securityfocus.com/bid/76766
http://lists.opensuse.org/opensuse-updates/2016-03/msg00054.html
http://lists.apple.com/archives/security-announce/2015/Sep/msg00007.html
http://lists.apple.com/archives/security-announce/2015/Sep/msg00001.html