LaunchServices in Apple OS X before 10.10.2 does not properly handle file-type metadata, which allows attackers to bypass the Gatekeeper protection mechanism via a crafted JAR archive.
https://www.ampliasecurity.com/advisories/os-x-gatekeeper-bypass-vulnerability.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/100519
http://www.securityfocus.com/bid/72341
http://www.securityfocus.com/archive/1/534567/100/0/threaded
http://www.exploit-db.com/exploits/35934
http://support.apple.com/HT204244
http://seclists.org/fulldisclosure/2015/Jan/109
http://lists.apple.com/archives/security-announce/2015/Jan/msg00003.html