The VMX process in VMware ESXi 4.1 and ESX 4.1 does not properly handle RPC commands, which allows guest OS users to cause a denial of serv…

The VMX process in VMware ESXi 4.1 and ESX 4.1 does not properly handle RPC commands, which allows guest OS users to cause a denial of service (memory overwrite and process crash) or possibly execute arbitrary code on the host OS via vectors involving function pointers.