Windows Hard Link in Visual Studio - CVE-2020-0789

 

Windows Hard Link in Visual Studio - CVE-2020-0789

Published: March 10, 2020


Vulnerability identifier: #VU25963
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-0789
CWE-ID: CWE-65
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Microsoft
Affected software:
Visual Studio

Detailed vulnerability description

The vulnerability allows a local user to cause a denial of service (DoS) condition on the target  system.

The vulnerability exists due to the Visual Studio Extension Installer Service improperly handles hard links. A local authenticated user can run a specially crafted application and cause a target system to stop responding.

This vulnerability would allow an attacker to overwrite system files.

How to mitigate CVE-2020-0789

Install updates from vendor's website.

Sources