The Code Signing implementation in Apple OS X before 10.10.3 does not properly validate signatures, which allows local users to bypass intended access restrictions via a crafted bundle, a different vulnerability than CVE-2015-1145.
https://support.apple.com/HT204659
http://www.securitytracker.com/id/1032048
http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.html