The Code Signing feature in Apple OS X before 10.10 does not properly handle incomplete resource envelopes in signed bundles, which allows remote attackers to bypass intended app-author restrictions by omitting an execution-related resource.
https://support.apple.com/kb/HT6535
https://exchange.xforce.ibmcloud.com/vulnerabilities/97644
http://www.securitytracker.com/id/1031063
http://www.securityfocus.com/bid/70637
http://archives.neohapsis.com/archives/bugtraq/2014-10/0101.html