Important

VMSA-2020-0013
8.4
2020-06-09
2020-06-09 (Initial Advisory)
CVE-2020-3961
VMware Horizon Client for Windows update addresses privilege escalation vulnerability (CVE-2020-3961)

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1. Impacted Products
  • VMware Horizon Client for Windows
2. Introduction

A privilege escalation vulnerability affecting VMware Horizon Client for Windows was privately reported to VMware. Updates are available to address this vulnerability in affected VMware products.

3. VMware Horizon Client for Windows privilege escalation vulnerability

Description

VMware Horizon Client for Windows contains a privilege escalation vulnerability due to folder permission configuration and unsafe loading of libraries. VMware has evaluated the severity of this issue to be in the Important severity range with a maximum CVSSv3 base score of 8.4.

Known Attack Vendors

A local user on the system where the software is installed may exploit this issue to run commands as any user.

Resolution

To remediate CVE-2020-3961 apply the patches listed in the 'Fixed Version' column of the 'Response Matrix' below.

Workarounds

None.

Additional Documentation

None.

Notes

None.

Acknowledgements

VMware would like to thank Nuttakorn Tungpoonsup and Ammarit Thongthua of Secure D Center Research Team, Secure D Center Co.,Ltd. and Cybersecurity Researcher, Sittikorn Sangrattanapitak for reporting this issue to us.

Response Matrix

Product Version Running On CVE Identifier CVSSv3 Severity Fixed Version Workarounds Additional Documentation
Horizon Client for Windows
5.x and prior
Windows
CVE-2020-3961
important
5.4.3
None
None
4. References
5. Change Log

2020-06-09 VMSA-2020-0013
Initial security advisory.

6. Contact

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fulldisclosure@seclists.org 

 

E-mail: security@vmware.com

PGP key at:

https://kb.vmware.com/kb/1055 

 

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