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AUSCERT External Security Bulletin Redistribution
ESB-2020.2160
VMware Tools for macOS update addresses a denial-of-service
22 June 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: VMware Tools for macOS
Publisher: VMWare
Operating System: Mac OS
Impact/Access: Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-3972
Original Bulletin:
https://www.vmware.com/security/advisories/VMSA-2020-0014.html
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Advisory ID: VMSA-2020-0014
CVSSv3 Range: 3.3
Issue Date: 2020-06-18
Updated On: 2020-06-18 (Initial Advisory)
CVE(s): CVE-2020-3972
Synopsis: VMware Tools for macOS update addresses a denial-of-service
vulnerability (CVE-2020-3972)
]
1. Impacted Products
o VMware Tools for macOS
2. Introduction
A denial-of-service vulnerability affecting VMware Tools for macOS was
privately reported to VMware. Updates are available to address this
vulnerability in affected VMware products.
3a. Advisory Details
Description
VMware Tools for macOS contains a denial-of-service vulnerability in
the Host-Guest File System (HGFS) implementation. VMware has evaluated the
severity of this issue to be in the Low severity range with a maximum CVSSv3
base score of 3.3.
Known Attack Vendors
Successful exploitation of this issue may allow attackers with non-admin
privileges on guest macOS virtual machines to create a denial-of-service
condition on their own VMs.
In order to exploit this vulnerability, the following conditions must be
fulfilled:
1) Guest and host operating system must be macOS.
2) Shared folders (HGFS) must be enabled, and a folder (that includes at-least
one file) must be selected from the host system to be shared. No folders are
shared by default in any version of our products, which means this
vulnerability is not exploitable by default.
Resolution
To remediate CVE-2020-3972 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 Jimi Sebree of Tenable Research for reporting this
issue to us.
Response Matrix
Product Version Running CVE CVSSv3 Severity Fixed Workarounds Additional
On Identifier Version Documentation
VMware 11.x.x
Tools and macOS CVE-2020-3972 3.3 low 11.1.1 None None
for prior
macOS
4. References
Fixed Version(s) and Release Notes:
VMware Tools for macOS 11.1.1
Downloads and Documentation:
https://my.vmware.com/web/vmware/details?downloadGroup=VMTOOLS1111&productId=
975
https://docs.vmware.com/en/VMware-Tools/11.1/rn/
VMware-Tools-1111-Release-Notes.html
Mitre CVE Dictionary Links:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-3972
FIRST CVSSv3 Calculator:
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
5. Change Log
2020-06-18 VMSA-2020-0014
Initial security advisory.
6. Contact
E-mail list for product security notifications and announcements:
http://lists.vmware.com/cgi-bin/mailman/listinfo/security-announce
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