Visual Studio Extension Installer Service Denial of Service Vulnerability

Security Vulnerability

Released: Mar 10, 2020

Assigning CNA
Microsoft
CVE.org link
CVE-2020-0789

Executive Summary

A denial of service vulnerability exists when the Visual Studio Extension Installer Service improperly handles hard links. An attacker who successfully exploited the vulnerability could cause a target system to stop responding.

To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The vulnerability would allow an attacker to overwrite system files.

The update addresses the vulnerability by correcting how the Visual Studio Extension Installer Service handles hard links.

Exploitability

The following table provides an exploitability assessment for this vulnerability at the time of original publication.

Publicly disclosed
No
Exploited
No
Exploitability assessment
Exploitation Less Likely

Acknowledgements

  • Zhiniang Peng (@edwardzpeng) of Qihoo 360 Core security and Xuefeng Li
Microsoft recognizes the efforts of those in the security community who help us protect customers through coordinated vulnerability disclosure. See Acknowledgements for more information.

Security Updates

To determine the support lifecycle for your software, see the Microsoft Support Lifecycle.

Release date Descending

Disclaimer

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Revisions

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