CVE-2020-3993 : Security Advisory and Response

VMware NSX-T (3.x before 3.0.2, 2.5.x before 2.5.2.2.0) contains a security vulnerability that allows a malicious actor to compromise the transport node through a MITM attack.

Understanding CVE-2020-3993

This CVE identifies a MITM vulnerability in VMware NSX-T versions 3.x before 3.0.2 and 2.5.x before 2.5.2.2.0.

What is CVE-2020-3993?

CVE-2020-3993 is a security flaw in VMware NSX-T that enables a KVM host to download and install packages from NSX manager, potentially leading to a compromise of the transport node by an attacker with MITM positioning.

The Impact of CVE-2020-3993

The vulnerability could allow threat actors to exploit the system and compromise the transport node, posing a significant security risk to affected systems.

Technical Details of CVE-2020-3993

This section provides in-depth technical insights into the vulnerability.

Vulnerability Description

The vulnerability in VMware NSX-T allows a KVM host to download and install packages from NSX manager, creating an avenue for attackers to compromise the transport node through a MITM attack.

Affected Systems and Versions

Product: VMware NSX-T
Versions Affected: 3.x before 3.0.2, 2.5.x before 2.5.2.2.0

Exploitation Mechanism

The vulnerability can be exploited by a malicious actor with MITM positioning, enabling them to compromise the transport node.

Mitigation and Prevention

Protecting systems from CVE-2020-3993 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply the necessary security patches provided by VMware promptly.
Monitor network traffic for any suspicious activities.
Implement network segmentation to limit the attack surface.

Long-Term Security Practices

Regularly update and patch all software and systems to prevent vulnerabilities.
Conduct security training for employees to raise awareness of potential threats.

Patching and Updates

Ensure that VMware NSX-T is updated to versions 3.0.2 or 2.5.2.2.0 to mitigate the vulnerability.