Lucene search

K
zdiLucas Leong (@_wmliang_) of Trend Micro Zero Day InitiativeZDI-21-578
HistoryMay 13, 2021 - 12:00 a.m.

Microsoft Windows win32kfull Palette Use-After-Free Privilege Escalation Vulnerability

2021-05-1300:00:00
Lucas Leong (@_wmliang_) of Trend Micro Zero Day Initiative
www.zerodayinitiative.com
38
microsoft windows
win32kfull
palette
use-after-free
privilege escalation
vulnerability
local attackers
low-privileged code
handling
operations
object validation
arbitrary code
system

EPSS

0.861

Percentile

98.6%

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 handling of Palette objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.