Jun 2019: Windows Elevation of Privilege Vulnerability
CVE-2019-1064 Published on June 12, 2019

Windows Elevation of Privilege Vulnerability
An elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links. An attacker who successfully exploited this vulnerability could run processes in an elevated context. An attacker could then install programs; view, change or delete data. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system. The security update addresses the vulnerability by correcting how Windows AppX Deployment Service handles hard links.

Vendor Advisory NVD

Known Exploited Vulnerability

This Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. A privilege escalation vulnerability exists when Windows AppXSVC improperly handles hard links. An attacker who successfully exploited this vulnerability could run processes in an elevated context.

The following remediation steps are recommended / required by April 5, 2022: Apply updates per vendor instructions.

Weakness Type

What is an insecure temporary file Vulnerability?

The software attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

CVE-2019-1064 has been classified to as an insecure temporary file vulnerability or weakness.


Products Associated with CVE-2019-1064

Want to know whenever a new CVE is published for Microsoft products? stack.watch will email you.

Microsoft Windows 10
 
Microsoft Windows Server 2016
 
Microsoft Windows Server 2019
 
Microsoft Windows 10 1703
 
Microsoft Windows 10 1709
 
Microsoft Windows 10 1803
 
Microsoft Windows 10 1903
 
Microsoft Windows Server 1803
 
Microsoft Windows Server 1903
 
Microsoft Windows Server 1709
 

Affected Versions

Microsoft Windows 10 Version 1703: Microsoft Windows 10 Version 1803: Microsoft Windows Server, version 1803 (Server Core Installation): Microsoft Windows 10 Version 1809: Microsoft Windows 10 Version 1809: Microsoft Windows Server 2019: Microsoft Windows Server 2019 (Server Core installation): Microsoft Windows 10 Version 1709 for 32-bit Systems: Microsoft Windows 10 Version 1709: Microsoft Windows 10 Version 1903 for 32-bit Systems: Microsoft Windows 10 Version 1903 for x64-based Systems: Microsoft Windows 10 Version 1903 for ARM64-based Systems: Microsoft Windows Server, version 1903 (Server Core installation): Microsoft Windows 10 Version 1607: Microsoft Windows Server 2016: Microsoft Windows Server 2016 (Server Core installation):

Exploit Probability

EPSS
11.34%
Percentile
93.42%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.