CVE-2021-4293 : Security Advisory and Response

A detailed overview of CVE-2021-4293 focusing on a cross-site scripting vulnerability in gnuboard youngcart5 menu_list_update.php.

Understanding CVE-2021-4293

This CVE involves a cross-site scripting vulnerability in the gnuboard youngcart5 menu_list_update.php file.

What is CVE-2021-4293?

CVE-2021-4293 is a problematic cross-site scripting vulnerability found in gnuboard youngcart5 up to version 5.4.5.1. The vulnerability allows remote attackers to manipulate specific arguments within the file to execute cross-site scripting attacks.

The Impact of CVE-2021-4293

This vulnerability poses a low severity risk with a CVSS base score of 3.5. It affects the functionality of older versions of the gnuboard youngcart5 product, making it susceptible to remote attacks.

Technical Details of CVE-2021-4293

Delving into the technical aspects of CVE-2021-4293.

Vulnerability Description

The issue resides in an unknown function of the file adm/menu_list_update.php due to improper handling of the 'me_link' argument, leading to cross-site scripting.

Affected Systems and Versions

The vulnerability impacts gnuboard youngcart5 versions up to 5.4.5.1.

Exploitation Mechanism

Remote attackers can exploit this vulnerability by manipulating the 'me_link' argument to launch cross-site scripting attacks.

Mitigation and Prevention

Guidelines on mitigating and preventing CVE-2021-4293.

Immediate Steps to Take

Upgrade the affected component to version 5.4.5.2 to address the vulnerability and prevent further exploitation.

Long-Term Security Practices

Regularly update software to supported versions and follow secure coding practices to minimize the risk of cross-site scripting vulnerabilities.

Patching and Updates

Refer to the provided patch (70daa537adfa47b87af12d85f1e698fff01785ff) and update to version 5.4.5.2 for a secure environment.