VMware ESXi/Workstation/Fusion vmxnet3 Virtual Network Adapter out-of-bounds write

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CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

A vulnerability was found in VMware ESXi, Workstation and Fusion (Virtualization Software) (affected version not known) and classified as problematic. Affected by this issue is an unknown code of the component vmxnet3 Virtual Network Adapter. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-787. Impacted is confidentiality. CVE summarizes:

VMware ESXi (6.7 before ESXi670-201904101-SG and 6.5 before ESXi650-201907101-SG), Workstation (15.x before 15.0.2), and Fusion (11.x before 11.0.2) contain a heap overflow vulnerability in the vmxnet3 virtual network adapter. A malicious actor with local access to a virtual machine with a vmxnet3 network adapter present may be able to read privileged information contained in physical memory.

The weakness was published 06/25/2020 (Website). The advisory is shared for download at vmware.com. This vulnerability is handled as CVE-2020-3971 since 12/30/2019. The attack needs to be approached locally. A simple authentication is needed for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/27/2020).

Upgrading eliminates this vulnerability.

Similar entries are available at 157244, 157245, 157273 and 157274.

Productinfoedit

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CPE 2.3infoedit

CPE 2.2infoedit

CVSSv3infoedit

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2infoedit

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

NVD Base Score: 🔒

Exploitinginfoedit

Class: Memory corruption (CWE-787)
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

Threat: 🔍
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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfoedit

12/30/2019 CVE assigned
06/25/2020 +178 days Advisory disclosed
06/26/2020 +1 days VulDB entry created
10/27/2020 +123 days VulDB last update

Sourcesinfoedit

Vendor: https://www.vmware.com/

Advisory: vmware.com
Status: Not defined
Confirmation: 🔒

CVE: CVE-2020-3971 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20060413
See also: 🔒

Entryinfoedit

Created: 06/26/2020 01:02 PM
Updated: 10/27/2020 10:20 AM
Changes: (1) advisory_confirm_url
Complete: 🔍

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