CVE-2020-15387 : Vulnerability Insights and Analysis

Brocade Fabric OS and Brocade SANnav SSH Servers Vulnerability

Understanding CVE-2020-15387

This CVE involves a vulnerability in the SSH servers of Brocade Fabric OS and Brocade SANnav, potentially exposing them to man-in-the-middle attacks.

What is CVE-2020-15387?

The affected versions of Brocade Fabric OS and Brocade SANnav utilize keys shorter than 2048 bits, making them susceptible to security risks like man-in-the-middle attacks and insecure SSH communications.

The Impact of CVE-2020-15387

The vulnerability poses a risk of information disclosure due to the use of weak encryption keys in the SSH servers of Brocade Fabric OS and Brocade SANnav.

Technical Details of CVE-2020-15387

The technical aspects of this CVE include:

Vulnerability Description

Brocade Fabric OS versions before v7.4.2h, v8.2.1c, v8.2.2, v9.0.0, and Brocade SANnav before v2.1.1 are affected.

Affected Systems and Versions

Products: Brocade SANnav & Brocade Fabric OS
Versions: Brocade Fabric OS v7.4.2h, v8.2.1c, v8.2.2, v9.0.0 and Brocade SANnav v2.1.1

Exploitation Mechanism

Vulnerable SSH servers with keys shorter than 2048 bits can be exploited by attackers to intercept communications or perform man-in-the-middle attacks.

Mitigation and Prevention

To address CVE-2020-15387, consider the following steps:

Immediate Steps to Take

Upgrade affected Brocade Fabric OS and Brocade SANnav versions to the patched releases.
Implement stronger encryption keys of at least 2048 bits for SSH communications.

Long-Term Security Practices

Regularly monitor and update encryption protocols and keys.
Conduct security audits to identify and mitigate vulnerabilities in SSH configurations.

Patching and Updates

Apply security patches provided by Brocade to fix the SSH server vulnerability.