The VBoxDrvNtDeviceControl function in VBoxDrv.sys in Sun xVM VirtualBox before 1.6.4 uses the METHOD_NEITHER communication method for IOCTLs and does not properly validate a buffer associated with the Irp object, which allows local users to gain privileges by opening the \.\VBoxDrv device and calling DeviceIoControl to send a crafted kernel address.
secunia.com/advisories/31361
securityreason.com/securityalert/4107
securitytracker.com/id?1020625
sunsolve.sun.com/search/document.do?assetkey=1-66-240095-1
virtualbox.org/wiki/Changelog
www.coresecurity.com/content/virtualbox-privilege-escalation-vulnerability
www.securityfocus.com/archive/1/495095/100/0/threaded
www.securityfocus.com/bid/30481
www.vupen.com/english/advisories/2008/2293
exchange.xforce.ibmcloud.com/vulnerabilities/44202
www.exploit-db.com/exploits/6218