CVE-2020-13100 : What You Need to Know

Arista’s CloudVision eXchange (CVX) server before 4.21.12M, 4.22.x before 4.22.7M, 4.23.x before 4.23.5M, and 4.24.x before 4.24.2F allows remote attackers to cause a denial of service (crash and restart) in the ControllerOob agent via a malformed control-plane packet.

Understanding CVE-2020-13100

This CVE involves a vulnerability in Arista’s CloudVision eXchange (CVX) server that could be exploited by remote attackers to trigger a denial of service.

What is CVE-2020-13100?

Arista’s CloudVision eXchange (CVX) server versions before 4.21.12M, 4.22.x before 4.22.7M, 4.23.x before 4.23.5M, and 4.24.x before 4.24.2F are susceptible to a crash and restart caused by a malformed control-plane packet.

The Impact of CVE-2020-13100

The vulnerability allows remote attackers to disrupt the normal operation of the ControllerOob agent, leading to a denial of service condition on the affected systems.

Technical Details of CVE-2020-13100

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The vulnerability in Arista’s CloudVision eXchange (CVX) server enables remote attackers to crash and restart the ControllerOob agent through the exploitation of a malformed control-plane packet.

Affected Systems and Versions

Arista CloudVision eXchange (CVX) server before 4.21.12M
Arista CloudVision eXchange (CVX) server 4.22.x before 4.22.7M
Arista CloudVision eXchange (CVX) server 4.23.x before 4.23.5M
Arista CloudVision eXchange (CVX) server 4.24.x before 4.24.2F

Exploitation Mechanism

The vulnerability can be exploited remotely by sending a specially crafted control-plane packet to the affected CVX server, causing it to crash and restart.

Mitigation and Prevention

Protecting systems from CVE-2020-13100 requires immediate actions and long-term security measures.

Immediate Steps to Take

Apply the recommended patches provided by Arista for the affected CVX server versions.
Implement network segmentation to limit exposure to potential attackers.
Monitor network traffic for any suspicious activity that could indicate an exploitation attempt.

Long-Term Security Practices

Regularly update and patch all software and firmware to address known vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate weaknesses in the network infrastructure.

Patching and Updates

Stay informed about security advisories from Arista and promptly apply any patches or updates released to address CVE-2020-13100.