CVE-2020-3964 : Exploit Details and Defense Strategies
Learn about CVE-2020-3964, an information leak vulnerability in VMware ESXi, Workstation, and Fusion products, allowing unauthorized access to privileged information. Find out how to mitigate and prevent this security issue.
VMware ESXi, Workstation, and Fusion products are affected by an information leak vulnerability in the EHCI USB controller, potentially allowing unauthorized access to privileged information in the hypervisor's memory.
Understanding CVE-2020-3964
This CVE identifies a security issue in VMware products that could lead to an information leak.
What is CVE-2020-3964?
CVE-2020-3964 is an information leak vulnerability affecting VMware ESXi, Workstation, and Fusion products. It allows a local attacker to access sensitive data in the hypervisor's memory.
The Impact of CVE-2020-3964
The vulnerability could be exploited by a malicious actor with local access to a virtual machine, potentially leading to unauthorized access to privileged information.
Technical Details of CVE-2020-3964
This section provides more technical insights into the vulnerability.
Vulnerability Description
The EHCI USB controller in VMware ESXi, Workstation, and Fusion products is susceptible to an information leak, enabling unauthorized access to sensitive data in the hypervisor's memory.
Affected Systems and Versions
- VMware ESXi 7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202006401-SG, and 6.5 before ESXi650-202005401-SG
- Workstation 15.x before 15.5.2
- Fusion 11.x before 11.5.2
Exploitation Mechanism
To exploit this vulnerability, the attacker needs local access to a virtual machine and specific conditions beyond their control.
Mitigation and Prevention
Protecting systems from CVE-2020-3964 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply the necessary security patches provided by VMware promptly.
- Monitor and restrict access to virtual machines to prevent unauthorized users.
Long-Term Security Practices
- Regularly update and patch VMware products to mitigate known vulnerabilities.
- Implement strong access controls and monitoring mechanisms to detect and prevent unauthorized access.
Patching and Updates
Ensure that all affected systems are updated with the latest patches and security fixes to address CVE-2020-3964.