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AUSCERT External Security Bulletin Redistribution
VMware Tools for macOS update addresses a denial-of-service
22 June 2020
AusCERT Security Bulletin Summary
Product: VMware Tools for macOS
Operating System: Mac OS
Impact/Access: Denial of Service -- Existing Account
CVE Names: CVE-2020-3972
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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)
Synopsis: VMware Tools for macOS update addresses a denial-of-service
1. Impacted Products
o VMware Tools for macOS
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
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
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.
To remediate CVE-2020-3972 apply the patches listed in the 'Fixed Version'
column of the 'Response Matrix' below.
VMware would like to thank Jimi Sebree of Tenable Research for reporting this
issue to us.
Product Version Running CVE CVSSv3 Severity Fixed Workarounds Additional
On Identifier Version Documentation
Tools and macOS CVE-2020-3972 3.3 low 11.1.1 None None
Fixed Version(s) and Release Notes:
VMware Tools for macOS 11.1.1
Downloads and Documentation:
Mitre CVE Dictionary Links:
FIRST CVSSv3 Calculator:
5. Change Log
Initial security advisory.
E-mail list for product security notifications and announcements:
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