VMware Workstation, Fusion and ESXi updates address a heap-overflow vulnerability (CVE-2021-22045)

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VMware Workstation, Fusion and ESXi updates address a heap-overflow vulnerability (CVE-2021-22045). Customers are advised to issue these updates immediately.

If customers require assistance from Sebae, please get in touch with us.

Updated On: 27/01/2022

1. Impacted Products
  • VMware ESXi
  • VMware Workstation Pro / Player (Workstation)
  • VMware Fusion
  • VMware Cloud Foundation
2. Introduction

A heap-overflow vulnerability in VMware Workstation, Fusion and ESXi was privately reported to VMware. Updates are available to remediate this vulnerability in affected VMware products.

3. VMware Workstation, Fusion and ESXi updates address a heap-overflow vulnerability (CVE-2021-22045)

Description

The CD-ROM device emulation in VMware Workstation, Fusion and ESXi has a heap-overflow vulnerability. VMware has evaluated the severity of this issue to be in the Important severity range with a maximum CVSSv3 base score of 7.7.

Known Attack Vectors

A malicious actor with access to a virtual machine with CD-ROM device emulation may be able to exploit this vulnerability in conjunction with other issues to execute code on the hypervisor from a virtual machine.

Resolution

To remediate CVE-2021-22045 apply the patches listed in the ‘Fixed Version’ column of the ‘Response Matrix’ found below.

Workarounds

Workarounds for CVE-2021-22045 have been listed in the ‘Workarounds’ column of the ‘Response Matrix’ below.

Additional Documentation

None.

Notes

Successful exploitation requires CD image to be attached to the virtual machine.

Acknowledgements

VMware would like to thank Jaanus K\xc3\xa4\xc3\xa4p, Clarified Security working with Trend Micro Zero Day Initiative for reporting this vulnerability to us.

Response Matrix

ProductVersionRunning OnCVE IdentifierCVSSv3SeverityFixed VersionWorkaroundsAdditional Documentation
ESXi7.0AnyCVE-2021-220457.7Important ESXi70U3c-19193900KB87249None
ESXi6.7AnyCVE-2021-220457.7Important ESXi670-202111101-SGKB87249None
ESXi6.5AnyCVE-2021-220457.7Important ESXi650-202110101-SGKB87249None
Workstation16.xAnyCVE-2021-220457.7Important 16.2.0KB87206None
Fusion12.xOS XCVE-2021-220457.7Important 12.2.0KB87207None

Impacted Product Suites that Deploy Response Matrix Components:

ProductVersionRunning OnCVE IdentifierCVSSv3SeverityFixed VersionWorkaroundsAdditional Documentation
VMware Cloud Foundation (ESXi)4.xAnyCVE-2021-220457.7Important Patch PendingKB87249None
VMware Cloud Foundation (ESXi)3.xAnyCVE-2021-220457.7Important Patch PendingKB87249None
4. References

Fixed Version(s) and Release Notes:

VMware ESXi 7.0

Downloads and Documentation:

https://customerconnect.vmware.com/en/downloads/details?downloadGroup=ESXI70U3C&productId=974&rPId=83414

https://docs.vmware.com/en/VMware-vSphere/7.0/rn/vsphere-esxi-70u3c-release-notes.html

VMware ESXi 6.7

Downloads and Documentation:

https://customerconnect.vmware.com/patch/

https://docs.vmware.com/en/VMware-vSphere/6.7/rn/esxi670-202111001.html#esxi670-202111101-sg-resolved

VMware ESXi 6.5

Downloads and Documentation:

https://customerconnect.vmware.com/patch/

https://docs.vmware.com/en/VMware-vSphere/6.5/rn/esxi650-202110001.html

VMware Workstation Pro 16.2.0

Downloads and Documentation:

https://customerconnect.vmware.com/en/downloads/details?downloadGroup=WKST-1620-WIN&productId=1038&rPId=75715

https://docs.vmware.com/en/VMware-Workstation-Pro/16.2.0/rn/VMware-Workstation-1620-Pro-Release-Notes.html

VMware Workstation Player 16.2.0

Downloads and Documentation:

https://customerconnect.vmware.com/downloads/details?downloadGroup=WKST-PLAYER-1620&productId=1039&rPId=77292

https://docs.vmware.com/en/VMware-Workstation-Player/16.2.0/rn/VMware-Workstation-1620-Player-Release-Notes.html

VMware Fusion 12.2.0

Downloads and Documentation:

https://customerconnect.vmware.com/downloads/details?downloadGroup=FUS-1220&productId=1040&rPId=75335

https://docs.vmware.com/en/VMware-Fusion/12.2.0/rn/VMware-Fusion-1220-Release-Notes.html

Mitre CVE Dictionary Links:

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22045

FIRST CVSSv3 Calculator:
CVE-2021-22045 : https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

5. Change Log

2022-01-04 VMSA-2022-0001
Initial security advisory.

2022-01-27 VMSA-2022-0001.1
Updated security advisory to add ESXi 7.0 version in the response matrix of section 3.

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