Lucene search

K
zdiAbdelhamid Naceri (halov)ZDI-21-330
HistoryMar 17, 2021 - 12:00 a.m.

Microsoft Windows EFI Partition Incorrect Authorization Denial-of-Service Vulnerability

2021-03-1700:00:00
Abdelhamid Naceri (halov)
www.zerodayinitiative.com
24
microsoft windows
efi partition
denial-of-service
vulnerability
local attackers
execution
low-privileged code
windows kernel
authorization logic
file access

EPSS

0.001

Percentile

48.6%

This vulnerability allows local attackers to create a denial-of-service condition 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 Windows kernel. The issue results from improper authorization logic when accessing files in the EFI partition. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.