CVE-2020-4067 : Vulnerability Insights and Analysis

In coturn before version 4.5.1.3, there is an issue whereby STUN/TURN response buffer is not initialized properly, leading to a leak of information between different client connections. This vulnerability has been assigned a CVSS base score of 7.0.

Understanding CVE-2020-4067

This CVE pertains to an improper initialization vulnerability in coturn.

What is CVE-2020-4067?

CVE-2020-4067 is a security vulnerability in coturn that allows an attacker to obtain sensitive information from another client's connection.

The Impact of CVE-2020-4067

The vulnerability has a high severity rating with a CVSS base score of 7.0. It can result in the leakage of confidential information between client connections.

Technical Details of CVE-2020-4067

This section provides technical details about the vulnerability.

Vulnerability Description

The issue in coturn before version 4.5.1.3 allows an attacker to intelligently query coturn to extract data from another client's connection.

Affected Systems and Versions

Product: coturn
Vendor: coturn
Versions Affected: >= 5.1.1, < 6.0.0

Exploitation Mechanism

The vulnerability arises due to improper initialization of the STUN/TURN response buffer, enabling an attacker to access sensitive data.

Mitigation and Prevention

Protect your systems from CVE-2020-4067 with the following measures:

Immediate Steps to Take

Update coturn to version 4.5.1.3 or later to mitigate the vulnerability.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update and patch software to address security flaws.
Implement network segmentation to limit the impact of potential breaches.

Patching and Updates

Ensure timely installation of security patches and updates to prevent exploitation of known vulnerabilities.