CVE-2021-31673 : Security Advisory and Response

A Dom-based Cross-site scripting (XSS) vulnerability at registration account in Cyclos 4 PRO.14.7 and before allows remote attackers to inject arbitrary web script or HTML via the groupId parameter.

Understanding CVE-2021-31673

This section provides an overview of the CVE-2021-31673 vulnerability in Cyclos 4 PRO.14.7.

What is CVE-2021-31673?

The CVE-2021-31673 is a Dom-based Cross-site scripting (XSS) vulnerability that exists in the registration account module of Cyclos 4 PRO.14.7 and earlier versions. It enables malicious actors to inject arbitrary web script or HTML through the groupId parameter.

The Impact of CVE-2021-31673

This vulnerability could be exploited by remote attackers to execute malicious scripts within the context of the user's browser, potentially leading to account compromise, data theft, or unauthorized actions on the affected system.

Technical Details of CVE-2021-31673

In this section, we delve into the technical aspects of CVE-2021-31673.

Vulnerability Description

The vulnerability arises due to insufficient input validation in the groupId parameter, allowing attackers to inject and execute malicious scripts within the application.

Affected Systems and Versions

Cyclos 4 PRO.14.7 and versions preceding it are affected by this CVE, making systems with these versions vulnerable to exploitation.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious input containing scripts or HTML code and submitting it via the groupId parameter to the registration account module, leading to script execution in the context of the user's session.

Mitigation and Prevention

Protecting systems from CVE-2021-31673 requires immediate action and long-term security measures.

Immediate Steps to Take

Update Cyclos to the latest version or apply patches provided by the vendor to mitigate the vulnerability.
Monitor for any suspicious activities or unauthorized access to the application.

Long-Term Security Practices

Implement strict input validation mechanisms to sanitize user inputs and prevent script injection vulnerabilities.
Conduct regular security audits and penetration testing to identify and address potential security weaknesses in the application.

Patching and Updates

Stay informed about security updates and patches released by Cyclos developers. Regularly apply these updates to ensure your system is protected against known vulnerabilities.