Moderate

VMSA-2022-0002
4.0
2022-01-18
2022-01-18 (Initial Advisory)
CVE-2022-22938
VMware Workstation and Horizon Client for Windows updates address a denial-of-service vulnerability (CVE-2022-22938)

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1. Impacted Products
  • VMware Workstation Pro / Player (Workstation)
  • VMware Horizon Client for Windows
2. Introduction

A denial-of-service vulnerability in VMware Workstation and Horizon Client for Windows was privately reported to VMware. Updates are available to remediate this vulnerability in affected VMware products.

3. Denial-of-service vulnerability via Cortado ThinPrint (CVE-2022-22938)

Description

VMware Workstation and Horizon Client for Windows contains a denial-of-service vulnerability in the Cortado ThinPrint component. The issue exists in the TrueType font parser. VMware has evaluated the severity of the issue to be in the Moderate severity range with a CVSSv3 base score of 4.0.

Known Attack Vectors

A malicious actor with access to a virtual machine or remote desktop may exploit this issue to trigger a denial-of-service condition in the Thinprint service running on the host machine where VMware Workstation or Horizon Client for Windows is installed.

Resolution

To remediate CVE-2022-22938 apply the patches listed in the 'Fixed Version' column of the 'Response Matrix' found below.

Workarounds

None.

Additional Documentation

None.

Notes

Exploitation is only possible if virtual printing has been enabled. This feature is not enabled by default on Workstation but it is enabled by default on Horizon Client for Windows.

Acknowledgements

VMware would like to thank Gabriel Durdiak, a former intern of Quarkslab for reporting this issue to us.

Response Matrix

Product Version Running On CVE Identifier CVSSv3 Severity Fixed Version Workarounds Additional Documentation
Workstation
16.x
Windows
CVE-2022-22938
moderate
16.2.2
None
None
Horizon Client for Windows
5.x
Windows
CVE-2022-22938
moderate
5.5.3
None
None
4. References
5. Change Log

2022-01-18 VMSA-2022-0002
Initial security advisory.

6. Contact

E-mail list for product security notifications and announcements:

https://lists.vmware.com/cgi-bin/mailman/listinfo/security-announce 

 

This Security Advisory is posted to the following lists:  

security-announce@lists.vmware.com  

bugtraq@securityfocus.com  

fulldisclosure@seclists.org 

 

E-mail: security@vmware.com

PGP key at:

https://kb.vmware.com/kb/1055 

 

VMware Security Advisories

https://www.vmware.com/security/advisories 

 

VMware Security Response Policy

https://www.vmware.com/support/policies/security_response.html 

 

VMware Lifecycle Support Phases

https://www.vmware.com/support/policies/lifecycle.html 

 

VMware Security & Compliance Blog  

https://blogs.vmware.com/security 

 

Twitter

https://twitter.com/VMwareSRC

 

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