CVE-2022-24801 Explained : Impact and Mitigation

A detailed overview of CVE-2022-24801 highlighting the HTTP Request Smuggling vulnerability in twisted.web.

Understanding CVE-2022-24801

This section provides insight into the CVE-2022-24801 vulnerability in twisted.web.

What is CVE-2022-24801?

CVE-2022-24801 involves the Twisted event-based framework for internet applications, specifically affecting versions <= 22.2.0. The issue can lead to HTTP request smuggling due to non-conformant parsing.

The Impact of CVE-2022-24801

Twisted Web's HTTP 1.1 server can parse HTTP request constructs leniently, potentially causing desynchronization when passing through multiple HTTP parsers. This vulnerability may result in HTTP request smuggling, exposing systems to security risks.

Technical Details of CVE-2022-24801

Detailed technical information related to CVE-2022-24801 is provided below.

Vulnerability Description

Prior to version 22.4.0rc1, the Twisted Web HTTP 1.1 server parsed HTTP request constructs more leniently than RFC 7230 permits, leading to the potential for HTTP request smuggling.

Affected Systems and Versions

Twisted versions <= 22.2.0 are impacted by this vulnerability. The Twisted Web HTTP 1.1 server, specifically in the

twisted.web.http

module, is susceptible to HTTP request smuggling.

Exploitation Mechanism

Users utilizing Twisted Web's HTTP 1.1 server or proxy that route requests through different HTTP servers or proxies are at risk. The issue has been resolved in Twisted 22.4.0rc1.

Mitigation and Prevention

Learn how to mitigate and prevent the CVE-2022-24801 vulnerability effectively.

Immediate Steps to Take

Ensure vulnerabilities in upstream proxies are addressed by upgrading them. Implement measures to filter malformed requests or configure upstream proxies for added protection.

Long-Term Security Practices

Adopt security best practices such as regular security audits, monitoring, and staying updated on patch releases and security advisories.

Patching and Updates

Upgrade to Twisted version 22.4.0rc1 or later to address the HTTP request smuggling vulnerability.