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zdiNabeel Ahmed of Dimension Data BelgiumZDI-19-803
HistorySep 10, 2019 - 12:00 a.m.

Microsoft Windows AppX Deployment Service Junction Arbitrary File Deletion Vulnerability

2019-09-1000:00:00
Nabeel Ahmed of Dimension Data Belgium
www.zerodayinitiative.com
22

EPSS

0.001

Percentile

31.3%

This vulnerability allows local attackers to delete arbitrary files 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 junction, an attacker can abuse the service to delete files in an incorrect location. An attacker can leverage this vulnerability to delete files in the context of SYSTEM.