Lucene search

zdiElliot Cao (@iamelli0t) working with Trend Micro's Zero Day InitiativeZDI-21-022
HistoryJan 14, 2021 - 12:00 a.m.

Microsoft Windows splwow64 Untrusted Pointer Dereference Privilege Escalation Vulnerability

Elliot Cao (@iamelli0t) working with Trend Micro's Zero Day Initiative

0.001 Low




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. The specific flaw exists within the user-mode printer driver host process splwow64.exe. The issue results from the lack of proper validation of a user-supplied value prior to dereferencing it as a pointer. An attacker can leverage this vulnerability to escalate privileges from low integrity and execute arbitrary code in the context of the current user at medium integrity.