• VMware ESXi
• VMware Workstation Pro / Player (Workstation)
• VMware Fusion Pro / Fusion (Fusion)
• VMware Remote Console for Mac (VMRC for Mac)
• VMware Horizon Client for Mac

Multiple security vulnerabilities in VMware ESXi, Workstation, Fusion, VMRC for Mac and Horizon Client for Mac were privately reported to VMware. Patches and workarounds are available to remediate or workaround these vulnerabilities in affected VMware products

VMware Fusion, VMRC for Mac and Horizon Client for Mac contain a local privilege escalation vulnerability due to a Time-of-check Time-of-use (TOCTOU) issue in the service opener. VMware has evaluated the severity of this issue to be in the Important severity range with a maximum CVSSv3 base score of 7.3.

Successful exploitation of this issue may allow attackers with normal user privileges to escalate their privileges to root on the system where Fusion, VMRC for Mac or Horizon Client for Mac is installed.

To remediate CVE-2020-3957 apply the patches listed in the 'Fixed Version' column of the 'Response Matrix' found below.

None.

None.

VMware would like to thank Rich Mirch of TeamARES from Critical Start Inc. and Jeffball of GRIMM for independently reporting this issue to us.

VMware ESXi, Workstation and Fusion contain a denial-of-service vulnerability in the shader functionality. VMware has evaluated the severity of this issue to be in the Moderate severity range with a maximum CVSSv3 base score of 4.0

Exploitation of this issue require an attacker to have access to a virtual machine with 3D graphics enabled. It is not enabled by default on ESXi and is enabled by default on Workstation and Fusion.

Successful exploitation of this issue may allow attackers with non-administrative access to a virtual machine to crash the virtual machine's vmx process leading to a denial of service condition.

To remediate CVE-2020-3958 apply the patches listed in the 'Fixed Version' column of the 'Response Matrix' found below.

Workarounds for CVE-2020-3958 have been been listed in the 'Workarounds' column of the 'Response Matrix' below.

None.

VMware would like to thank Piotr Bania of Cisco Talos for reporting this issue to us.

None.

VMware ESXi, Workstation and Fusion contain a memory leak vulnerability in the VMCI module. VMware has evaluated the severity of this issue to be in the Low severity range with a maximum CVSSv3 base score of 3.3.

A malicious actor with local non-administrative access to a virtual machine may be able to crash the virtual machine's vmx process leading to a partial denial of service.

To remediate CVE-2020-3959 apply the patches listed in the 'Fixed Version' column of the 'Response Matrix' found below.

None.

None.

VMware would like to thank Tianwen Tang(VictorV) of Qihoo 360Vulcan Team working with 360 BugCloud for reporting this issue to us.

None.

Fixed Version(s) and Release Notes:

VMware ESXi 6.7 ESXi670-202004101-SG
https://my.vmware.com/group/vmware/patch
https://docs.vmware.com/en/VMware-vSphere/6.7/rn/esxi670-202004002.html

VMware ESXi 6.5 ESXi650-202005401-SG
https://my.vmware.com/group/vmware/patch
https://docs.vmware.com/en/VMware-vSphere/6.5/rn/esxi650-202005001.html

VMware Workstation Pro 15.5.2

Downloads and Documentation:

https://www.vmware.com/go/downloadworkstation

https://docs.vmware.com/en/VMware-Workstation-Pro/index.html

VMware Workstation Player 15.5.2

Downloads and Documentation:

https://www.vmware.com/go/downloadplayer
https://docs.vmware.com/en/VMware-Workstation-Player/index.html

VMware Fusion 11.5.5 (Latest)
Downloads and Documentation:
https://www.vmware.com/go/downloadfusion
https://docs.vmware.com/en/VMware-Fusion/index.html

VMware Horizon Client for Mac 5.4.3
Downloads and Documentation:
https://my.vmware.com/en/web/vmware/downloads/info/slug/desktop_end_user_computing/vmware_horizon_clients/5_0
https://docs.vmware.com/en/VMware-Horizon-Client/index.html

VMware Remote Console for Mac 11.2.0
Downloads and Documentation:
https://my.vmware.com/en/web/vmware/downloads/details?downloadGroup=VMRC1120&productId=974
https://docs.vmware.com/en/VMware-Remote-Console/index.html

Mitre CVE Dictionary Links:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-3957
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-3958
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-3959

FIRST CVSSv3 Calculator:
CVE-2020-3957-

https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
CVE-2020-3958-

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
CVE-2020-3959 -

https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
 

2020-05-28: VMSA-2020-0011 - Initial security advisory.

2020-07-09: VMSA-2020-0011.1 - Updated security advisory to add fixed versions of VMRC for Mac and Horizon Client for Mac - Issue 3(a).

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:

  [email protected]

  [email protected]

  [email protected]

E-mail: [email protected]

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

Copyright 2020 VMware Inc. All rights reserved.