CVE-2020-4004 : Exploit Details and Defense Strategies

VMware ESXi, Workstation, and Fusion products are affected by a use-after-free vulnerability in the XHCI USB controller.

Understanding CVE-2020-4004

This CVE identifies a critical security issue in VMware products that could allow malicious actors to execute code on a virtual machine.

What is CVE-2020-4004?

The vulnerability in VMware ESXi, Workstation, and Fusion products could be exploited by a local user with administrative privileges on a virtual machine to run arbitrary code on the host.

The Impact of CVE-2020-4004

The use-after-free vulnerability poses a significant security risk as it allows unauthorized code execution, potentially leading to system compromise and data breaches.

Technical Details of CVE-2020-4004

VMware products are affected as follows:

Vulnerability Description

The use-after-free vulnerability in the XHCI USB controller of VMware ESXi, Workstation, and Fusion products enables attackers to execute code within the VMX process.

Affected Systems and Versions

VMware ESXi: 7.0 before ESXi70U1b-17168206, 6.7 before ESXi670-202011101-SG, 6.5 before ESXi650-202011301-SG
Workstation: 15.x before 15.5.7
Fusion: 11.x before 11.5.7

Exploitation Mechanism

Malicious actors with local administrative privileges on a virtual machine can exploit this vulnerability to execute code as the VMX process running on the host.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent exploitation of CVE-2020-4004:

Immediate Steps to Take

Apply security patches provided by VMware promptly.
Monitor for any unauthorized code execution or unusual activities on virtual machines.

Long-Term Security Practices

Regularly update VMware products to the latest versions to mitigate known vulnerabilities.
Implement the principle of least privilege to restrict administrative access.

Patching and Updates

Stay informed about security advisories from VMware and apply patches as soon as they are released to ensure system security.