CVE-2024-23340 : What You Need to Know

This CVE-2024-23340 was published on January 22, 2024, by GitHub_M. It involves the @hono/node-server container being unable to handle "double dots" in URLs, leading to a vulnerability with a CVSS base score of 5.3.

Understanding CVE-2024-23340

This CVE highlights a vulnerability in @hono/node-server, an adapter for running Hono applications on Node.js. The issue arises from the unexpected behavior of the Request object's

url

, specifically in resolving "double dots" in the URL.

What is CVE-2024-23340?

The vulnerability in CVE-2024-23340 arises due to the @hono/node-server's Request object not properly resolving "double dots" in URLs. This can lead to security risks, especially when using

serveStatic

.

The Impact of CVE-2024-23340

The impact of this vulnerability lies in potential security risks when accessing URLs containing "double dots" in @hono/node-server, particularly when using

serveStatic

. While modern web browsers and the latest

curl

command can resolve double dots client-side, vulnerabilities may arise for clients that do not handle them properly.

Technical Details of CVE-2024-23340

The vulnerability description involves how @hono/node-server's Request object handles URLs with double dots, the affected systems and versions, and the exploitation mechanism.

Vulnerability Description

Since version 1.3.0, @hono/node-server does not properly resolve double dots in URLs, leading to potential security vulnerabilities, especially when using

serveStatic

.

Affected Systems and Versions

The @hono/node-server versions affected by this vulnerability are those greater than or equal to 1.3.0 and less than 1.4.1.

Exploitation Mechanism

Exploiting this vulnerability involves crafting URLs with double dots that @hono/node-server does not resolve correctly, potentially exposing security risks.

Mitigation and Prevention

To address CVE-2024-23340, immediate steps, long-term security practices, and patching updates can be implemented.

Immediate Steps to Take

Avoid using

serveStatic

in @hono/node-server until the issue is resolved, and consider alternative security measures to mitigate risks.

Long-Term Security Practices

Implement stringent URL validation practices and regularly review and update security protocols to prevent similar vulnerabilities in the future.

Patching and Updates

Update @hono/node-server to version 1.4.1 or newer, as this includes the necessary fix to address the vulnerability related to handling double dots in URLs.