This host is installed with Oracle VM VirtualBox and is prone to unspecified vulnerability.
Successful exploitation will allow local users to affect availability and cause local denial of service. Impact Level: Application
Apply the patch from below link, http://www.oracle.com/technetwork/topics/security/cpuoct2013-1899837.html
The flaw is due to unspecified errors related to 'core' component
Oracle VM VirtualBox version 3.2.18 and before, 4.0.20 and before,4.1.28 and before,4.2.18 and before on Mac OS X
Get the installed version of Oracle VM VirtualBox and check the version is vulnerable or not.