CVE-2020-11622 : Vulnerability Insights and Analysis

A vulnerability exists in Arista’s Cloud EOS VM / vEOS 4.23.2M and below releases in the 4.23.x train, 4.22.4M and below releases in the 4.22.x train, 4.21.3M to 4.21.9M releases in the 4.21.x train, 4.21.3FX-7368., 4.21.4-FCRFX., 4.21.4.1, 4.21.7.1, 4.22.2.0.1, 4.22.2.2.1, 4.22.3.1, and 4.23.2.1 Router code in a scenario where TCP MSS options are configured.

Understanding CVE-2020-11622

This CVE identifies a vulnerability in Arista’s Cloud EOS VM / vEOS software versions.

What is CVE-2020-11622?

The vulnerability in Arista’s Cloud EOS VM / vEOS software versions allows for exploitation in specific scenarios involving TCP MSS options.

The Impact of CVE-2020-11622

The vulnerability could potentially lead to security breaches, unauthorized access, or denial of service attacks on affected systems.

Technical Details of CVE-2020-11622

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability in Arista’s Cloud EOS VM / vEOS software versions arises in situations where TCP MSS options are configured.

Affected Systems and Versions

Arista Cloud EOS VM / vEOS 4.23.2M and below in the 4.23.x train
Arista Cloud EOS VM / vEOS 4.22.4M and below in the 4.22.x train
Arista Cloud EOS VM / vEOS 4.21.3M to 4.21.9M in the 4.21.x train
Other specific releases mentioned in the description

Exploitation Mechanism

The vulnerability can be exploited when TCP MSS options are set up in the affected Arista router code.

Mitigation and Prevention

Protecting systems from CVE-2020-11622 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the affected software to a patched version provided by Arista.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Conduct security audits and assessments to identify and mitigate risks proactively.
Educate network administrators and users on best security practices.

Patching and Updates

Arista has released patches to address the vulnerability. Ensure timely application of these patches to secure the systems.