CVE-2021-22960 : What You Need to Know

A detailed overview of CVE-2021-22960 highlighting the vulnerability, impact, technical details, and mitigation strategies.

Understanding CVE-2021-22960

This section provides insights into the CVE-2021-22960 vulnerability affecting llhttp.

What is CVE-2021-22960?

The vulnerability in llhttp versions prior to 2.1.4 and 6.0.6 allows malicious actors to exploit chunk extensions in chunked requests, leading to HTTP Request Smuggling.

The Impact of CVE-2021-22960

CVE-2021-22960 poses a significant risk by enabling HTTP Request Smuggling (HRS) under specific conditions, potentially allowing attackers to bypass security measures.

Technical Details of CVE-2021-22960

Explore the technical aspects of CVE-2021-22960 to understand the vulnerability further.

Vulnerability Description

The parse function in llhttp < 2.1.4 and < 6.0.6 fails to properly handle chunk extensions during chunked request processing, leading to HTTP Request Smuggling.

Affected Systems and Versions

Systems running llhttp versions earlier than 2.1.4 and 6.0.6 are susceptible to CVE-2021-22960 and are at risk of HTTP Request Smuggling attacks.

Exploitation Mechanism

Malicious actors can leverage the vulnerability in llhttp to manipulate chunk extensions, potentially causing HTTP Request Smuggling attacks.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2021-22960 and prevent potential attacks.

Immediate Steps to Take

Promptly update llhttp to version 2.1.4 or 6.0.6 to remediate the vulnerability and protect systems from HTTP Request Smuggling attacks.

Long-Term Security Practices

Implement secure coding practices and conduct regular security audits to fortify systems against similar vulnerabilities in the future.

Patching and Updates

Stay informed about security patches and updates for llhttp to ensure that systems are protected from known vulnerabilities.