The Sandbox Profiles component in Apple iOS before 9.3.3, OS X before 10.11.6, tvOS before 9.2.2, and watchOS before 2.2.2 allows attackers to access the process list via a crafted app that makes an API call.
https://support.apple.com/HT206905
https://support.apple.com/HT206904
https://support.apple.com/HT206903
https://support.apple.com/HT206902
http://www.securitytracker.com/id/1036344
http://www.securityfocus.com/bid/91834
http://lists.apple.com/archives/security-announce/2016/Jul/msg00003.html
http://lists.apple.com/archives/security-announce/2016/Jul/msg00002.html
http://lists.apple.com/archives/security-announce/2016/Jul/msg00001.html
http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html