CVE-2021-31410 : What You Need to Know

A vulnerability in Vaadin Designer versions 4.3.0 through 4.6.3 could allow remote attackers to access project sources via crafted HTTP requests.

Understanding CVE-2021-31410

This CVE highlights the risk of exposing project sources in Vaadin Designer due to overly relaxed configuration in the frontend resources server.

What is CVE-2021-31410?

The CVE-2021-31410 vulnerability in Vaadin Designer versions 4.3.0 through 4.6.3 enables unauthorized access to project sources through malicious HTTP requests.

The Impact of CVE-2021-31410

With a CVSS base score of 8.6, this high-severity vulnerability poses a significant threat by allowing remote attackers to compromise the confidentiality of project sources.

Technical Details of CVE-2021-31410

The CVE-2021-31410 vulnerability is categorized under CWE-402, involving the transmission of private resources into a new sphere, leading to a 'Resource Leak'.

Vulnerability Description

The vulnerability arises from an excessively permissive configuration of the frontend resources server, facilitating unauthorized access to project sources.

Affected Systems and Versions

Vaadin Designer versions 4.3.0 through 4.6.3 are affected by this vulnerability, exposing project sources to potential exploitation.

Exploitation Mechanism

Remote attackers can exploit this vulnerability by sending specially crafted HTTP requests to the affected Vaadin Designer instances.

Mitigation and Prevention

To address CVE-2021-31410, immediate action and long-term security practices are crucial to safeguard systems from potential exploitation.

Immediate Steps to Take

Users are advised to update Vaadin Designer to a secure version and restrict access to ensure the confidentiality of project sources.

Long-Term Security Practices

Implement strict access controls, regular security assessments, and timely software updates to mitigate the risk of unauthorized access.

Patching and Updates

Stay informed about security updates from Vaadin and promptly apply patches to secure the Vaadin Designer environment.