CVE-2014-8838
The Security component in Apple OS X before 10.10.2 does not properly process cached information about app certificates, which allows attackers to bypass the Gatekeeper protection mechanism by leveraging access to a revoked Developer ID certificate for signing a crafted app.
Date published : 2015-01-30
http://lists.apple.com/archives/security-announce/2015/Jan/msg00003.html