CVE-2019-1064

Known Exploited Vulnerability

Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation Vulnerability

Vendor / product: Microsoft / Windows

Description

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.

Weakness classification

• CWE-59: Improper Link Resolution Before File Access ('Link Following')

Primary references

• secure@microsoft.com — Patch, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory
• 134c704f-9b21-4f2e-91b3-4a467353bcc0 — US Government Resource