The CPU hardware emulation in VMware Workstation 6.0.5 and earlier and 5.5.8 and earlier; Player 2.0.x through 2.0.5 and 1.0.x through 1.0.8; ACE 2.0.x through 2.0.5 and earlier, and 1.0.x through 1.0.7; Server 1.0.x through 1.0.7; ESX 2.5.4 through 3.5; and ESXi 3.5, when running 32-bit and 64-bit guest operating systems, does not properly handle the Trap flag, which allows authenticated guest OS users to gain privileges on the guest OS.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6309
https://exchange.xforce.ibmcloud.com/vulnerabilities/46415
http://www.vupen.com/english/advisories/2008/3052
http://www.vmware.com/security/advisories/VMSA-2008-0018.html
http://www.securitytracker.com/id?1021154
http://www.securityfocus.com/bid/32168
http://www.securityfocus.com/archive/1/498138/100/0/threaded
http://security.gentoo.org/glsa/glsa-201209-25.xml
http://secunia.com/advisories/32624
http://secunia.com/advisories/32612
http://lists.vmware.com/pipermail/security-announce/2008/000042.html