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K
zdiAbdelhamid Naceri (halov)ZDI-21-424
HistoryApr 21, 2021 - 12:00 a.m.

Microsoft Windows AppX Deployment Service Directory Junction Denial-of-Service Vulnerability

2021-04-2100:00:00
Abdelhamid Naceri (halov)
www.zerodayinitiative.com
32
vulnerability
microsoft windows
appx deployment service
directory junction
denial-of-service

EPSS

0.001

Percentile

50.3%

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 AppX Deployment Service. By creating a directory junction, an attacker can abuse the service to delete the contents of a chosen directory. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.