CVE-2021-31412 : Vulnerability Insights and Analysis

This CVE-2021-31412 involves a vulnerability in Vaadin versions 10, 11-14, and 15-19 that allows a network attacker to enumerate all available routes via crafted HTTP requests. The issue arises due to improper sanitization of paths in the default RouteNotFoundError view.

Understanding CVE-2021-31412

This section provides insights into the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2021-31412?

The vulnerability in Vaadin allows malicious actors to enumerate available routes by exploiting an error in the default RouteNotFoundError view when the application is in production mode.

The Impact of CVE-2021-31412

The vulnerability allows attackers to gain sensitive information about the application's routes, potentially leading to further security breaches.

Technical Details of CVE-2021-31412

This section elaborates on the vulnerability's description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

Improper sanitization of paths in the default RouteNotFoundError view in Vaadin versions allows attackers to enumerate all available routes through crafted HTTP requests.

Affected Systems and Versions

Vaadin versions 10.0.0 through 10.0.18, 11.0.0 through 14.6.1, and 15.0.0 through 19.0.8 are impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending crafted HTTP requests to the application when it's operating in production mode.

Mitigation and Prevention

This section outlines immediate steps to take, long-term security practices, and the importance of patching and updates.

Immediate Steps to Take

Implement custom handlers for NotFoundException to mitigate the vulnerability and reduce the risk of route enumeration attacks.

Long-Term Security Practices

Regularly update Vaadin to the latest versions, follow secure coding practices, and conduct security assessments to identify and address similar vulnerabilities.

Patching and Updates

Apply patches and updates provided by Vaadin promptly to secure your application against potential route enumeration attacks.