CVE-2021-38153 : Security Advisory and Response

This article discusses CVE-2021-38153, a timing attack vulnerability affecting Apache Kafka Connect and clients, potentially leading to successful brute force attacks on credentials.

Understanding CVE-2021-38153

This section provides insights into the vulnerability, its impact, affected systems, and how to mitigate the risks.

What is CVE-2021-38153?

Apache Kafka components using

Arrays.equals

for password or key validation are vulnerable to timing attacks, increasing the likelihood of successful brute force attacks on credentials.

The Impact of CVE-2021-38153

The vulnerability poses a moderate security risk, potentially allowing unauthorized access to Apache Kafka Connect and clients.

Technical Details of CVE-2021-38153

Delve into the specifics of the vulnerability to gain a deeper understanding of its implications.

Vulnerability Description

The use of

Arrays.equals

in Apache Kafka components exposes them to timing attacks, making brute force attacks more feasible.

Affected Systems and Versions

Versions equal to or less than Apache Kafka 2.8.0 are affected, emphasizing the importance of upgrading to 2.8.1 or higher to address the vulnerability.

Exploitation Mechanism

By exploiting the timing discrepancies in password or key validation, threat actors can potentially execute successful brute force attacks.

Mitigation and Prevention

Learn how to address and prevent the exploitation of CVE-2021-38153 to enhance the security of Apache Kafka Connect and clients.

Immediate Steps to Take

Upgrade affected systems to Apache Kafka 2.8.1 or higher, or version 3.0.0 and above, where the vulnerability has been resolved.

Long-Term Security Practices

Implement stringent security measures, emphasize password security, and stay informed about further Apache Kafka security updates to mitigate future risks.

Patching and Updates

Regularly apply security patches, monitor Apache Kafka security advisories, and maintain proactive security practices to safeguard against emerging threats.