The XPC Services API in LaunchServices in Apple iOS before 9.3 allows attackers to bypass intended event-handler restrictions and modify an arbitrary app's events via a crafted app.Referenceshttp://www.securitytracker.com/id/1035353http://lists.apple.com/archives/security-announce/2016/Mar/msg00000.htmlhttps://support.apple.com/HT206166