CVE-2021-28165 : What You Need to Know

A high-severity vulnerability marked as CVE-2021-28165 has been identified in Eclipse Jetty software versions 7.2.2 to 9.4.38, 10.0.0.alpha0 to 10.0.1, and 11.0.0.alpha0 to 11.0.1. When the software receives a large invalid TLS frame, it can cause CPU usage to spike to 100%.

Understanding CVE-2021-28165

This section provides insights into the nature of the vulnerability and its impact on systems.

What is CVE-2021-28165?

The CVE-2021-28165 vulnerability in Eclipse Jetty can lead to a situation where CPU usage reaches 100% upon receiving a particular type of invalid TLS frame.

The Impact of CVE-2021-28165

The identified vulnerability can have a significant impact on affected systems, potentially causing a denial of service due to CPU overload.

Technical Details of CVE-2021-28165

The technical aspects of the CVE are outlined below.

Vulnerability Description

The vulnerability allows for CPU exhaustion leading to potential service disruptions.

Affected Systems and Versions

Eclipse Jetty versions 7.2.2 to 9.4.38, 10.0.0.alpha0 to 10.0.1, and 11.0.0.alpha0 to 11.0.1 are confirmed to be affected.

Exploitation Mechanism

The vulnerability triggers when the software encounters a large invalid TLS frame, causing a spike in CPU usage.

Mitigation and Prevention

Understanding the steps to mitigate and prevent the exploitation of the vulnerability is crucial.

Immediate Steps to Take

Ensure the affected Eclipse Jetty versions are updated to patched versions to prevent potential exploitation.

Long-Term Security Practices

Implement regular software updates and security monitoring to stay protected from emerging vulnerabilities.

Patching and Updates

Apply the latest patches provided by Eclipse Jetty to address the CVE-2021-28165 vulnerability and enhance system security.