Directory traversal vulnerability in the App Installation feature in Apple iOS before 8 allows local users to install unverified apps by triggering code-signature validation of an unintended bundle.
http://archives.neohapsis.com/archives/bugtraq/2014-09/0106.html
http://support.apple.com/kb/HT6441
http://www.securityfocus.com/bid/69882
http://www.securityfocus.com/bid/69940