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AUSCERT External Security Bulletin Redistribution
ESB-2022.0229
VMSA-2022-0002 - VMware Workstation and Horizon Client for Windows updates
address a denial-of-service vulnerability (CVE-2022-22938)
19 January 2022
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AusCERT Security Bulletin Summary
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Product: VMware Workstation
VMware Horizon Client for Windows
Publisher: VMWare
Operating System: Windows
Impact/Access: Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2022-22938
Original Bulletin:
https://www.vmware.com/security/advisories/VMSA-2022-0002.html
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Advisory ID: VMSA-2022-0002
CVSSv3 Range: 4.0
Issue Date: 2022-01-18
Updated On: 2022-01-18 (Initial Advisory)
CVE(s): CVE-2022-22938
Synopsis:
VMware Workstation and Horizon Client for Windows updates address a denial-of-service
vulnerability (CVE-2022-22938)
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
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 4.0 Moderate 16.2.2 None None
Horizon Client for Windows 5.x Windows CVE-2022-22938 4.0 Moderate 5.5.3 None None
4. References
Fixed Version(s) and Release Notes:
VMware Workstation Pro 16.2.2
Downloads and Documentation:
https://customerconnect.vmware.com/downloads/details?downloadGroup=WKST-1622-WIN&productId=1038&rPId=82543
https://docs.vmware.com/en/VMware-Workstation-Pro/16.2.2/rn/VMware-Workstation-1622-Pro-Release-Notes.html
VMware Workstation Player 16.2.2
Downloads and Documentation:
https://customerconnect.vmware.com/en/downloads/details?downloadGroup=WKST-PLAYER-1622&productId=1039&rPId=82555
https://docs.vmware.com/en/VMware-Workstation-Player/16.2.2/rn/VMware-Workstation-1622-Player-Release-Notes.html
VMware Horizon Client 5.5.3
Downloads and Documentation:
https://customerconnect.vmware.com/en/downloads/details?downloadGroup=CART23FQ1_WIN_553&productId=863&rPId=83368
https://docs.vmware.com/en/VMware-Horizon-Client-for-Windows/5.5.3/rn/VMware-Horizon-Client-for-Windows-553-Release-Notes.html
Mitre CVE Dictionary Links:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-22938
FIRST CVSSv3 Calculator:
CVE-2022-22938 - https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
5. Change Log
2022-01-18 VMSA-2022-0002
Initial security advisory.
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