Directory traversal vulnerability in Backup in Apple iOS before 8.3 allows attackers to read arbitrary files via a crafted relative path.
https://support.apple.com/HT204661
https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-1230
http://www.securitytracker.com/id/1032050
http://www.securityfocus.com/bid/73978
http://lists.apple.com/archives/security-announce/2015/Apr/msg00002.html