CVE-2021-3350 : What You Need to Know

A vulnerability has been identified in the Delete Account plugin 1.4 for MyBB, allowing for XSS attacks via a specific parameter. Below is a comprehensive overview of CVE-2021-3350 to help understand the issue and its implications.

Understanding CVE-2021-3350

This section delves into what CVE-2021-3350 entails, including its description, impact, technical details, and mitigation strategies.

What is CVE-2021-3350?

The vulnerability lies in deleteaccount.php in the Delete Account plugin 1.4 for MyBB, enabling malicious actors to execute XSS attacks through the deletereason parameter.

The Impact of CVE-2021-3350

By exploiting this vulnerability, attackers can inject malicious scripts into web pages viewed by other users, leading to potential data theft, session hijacking, and unauthorized actions.

Technical Details of CVE-2021-3350

Examining the specific technical aspects of CVE-2021-3350, such as the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The flaw in deleteaccount.php within the Delete Account plugin 1.4 for MyBB allows threat actors to insert harmful XSS payloads via the deletereason parameter, posing a significant risk to website security.

Affected Systems and Versions

The XSS vulnerability impacts all versions of the Delete Account plugin 1.4 for MyBB, making any platform with this plugin installed susceptible to exploitation.

Exploitation Mechanism

Cybercriminals can exploit this security flaw by crafting a specially-crafted deletereason parameter, injecting malicious code that will be executed when the parameter is processed.

Mitigation and Prevention

Outlined are steps to mitigate the risks associated with CVE-2021-3350, including immediate actions and long-term security practices.

Immediate Steps to Take

Website administrators should disable or remove the Delete Account plugin 1.4 for MyBB until a patch is released to address the XSS vulnerability. It is crucial to monitor for any suspicious activities on the platform.

Long-Term Security Practices

Ensure regular security audits on plugins and extensions used in platforms to identify and mitigate potential vulnerabilities promptly. Educate users on safe browsing practices to minimize XSS attack risks.

Patching and Updates

Stay informed about security patches and updates provided by plugin developers. Install patches promptly to protect the platform from known vulnerabilities and security threats.