VMware ESXi/Workstation/Fusion USB 2.0 Controller out-of-bounds write

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CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

A vulnerability, which was classified as critical, has been found in VMware ESXi, Workstation and Fusion (Virtualization Software) (unknown version). This issue affects an unknown functionality of the component USB 2.0 Controller. 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, integrity, and availability. The summary by CVE is:

VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202004101-SG and 6.5 before ESXi650-202005401-SG), Workstation (15.x before 15.5.5), and Fusion (11.x before 11.5.5) contain a heap-overflow vulnerability in the USB 2.0 controller (EHCI). A malicious actor with local access to a virtual machine may be able to exploit this vulnerability to execute code on the hypervisor from a virtual machine. Additional conditions beyond the attacker's control must be present for exploitation to be possible.

The weakness was disclosed 06/25/2020 (Website). The advisory is shared at vmware.com. The identification of this vulnerability is CVE-2020-3967 since 12/30/2019. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/27/2020).

Upgrading eliminates this vulnerability.

The entries 157244, 157245, 157273 and 157274 are pretty similar.

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CPE 2.3infoedit

CPE 2.2infoedit

CVSSv3infoedit

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
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-2020-3967 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20060413
See also: 🔒

Entryinfoedit

Created: 06/26/2020 12:47 PM
Updated: 10/27/2020 10:01 AM
Changes: (1) advisory_confirm_url
Complete: 🔍

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