Microsoft Windows UMPDDrvStretchBlt Type Confusion Local Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. Additionally, the target system must have multiple active monitors. The specific flaw exists within the UMPDDrvStretchBlt function in the win32kfull driver. The issue results from the lack of proper validation of user-supplied data, which can result in a type confusion condition. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.