Core Security Technologies Advisory - A security vulnerability was found in the driver 'vmswitch.sys', associated to the Windows Hypervisor subsystem, allowing an authenticated local DoS. The vulnerability could allow denial of service if a specially crafted packet is sent to the VMBus by an authenticated user in one of the guest virtual machines hosted by the Hyper-V server. The impact is all guests on that host became non-responsive. An attacker must have valid logon credentials and be able to send specially crafted content from a guest virtual machine to exploit this vulnerability.
Vulmon