CVE-2021-24834 : Exploit Details and Defense Strategies

A detailed overview of the YOP Poll WordPress plugin vulnerability CVE-2021-24834, which allows stored Cross-Site Scripting attacks via the Options module.

Understanding CVE-2021-24834

This CVE identifies a stored Cross-Site Scripting vulnerability in the YOP Poll WordPress plugin version 6.3.1 and below, impacting the Create Poll Options module.

What is CVE-2021-24834?

The YOP Poll WordPress plugin before version 6.3.1 is vulnerable to stored Cross-Site Scripting, enabling users with low-level roles like authors to execute malicious scripts within the application.

The Impact of CVE-2021-24834

The vulnerability stems from inadequate validation of custom label parameters, allowing attackers to inject script code through vote button labels, results link labels, and back to vote caption labels.

Technical Details of CVE-2021-24834

Explore the specifics of the vulnerability to understand its implications.

Vulnerability Description

The stored Cross-Site Scripting flaw in the YOP Poll plugin permits unauthorized execution of arbitrary script code by users with minimal role privileges.

Affected Systems and Versions

YOP Poll versions prior to 6.3.1 are affected by this vulnerability, making them susceptible to Cross-Site Scripting attacks.

Exploitation Mechanism

The vulnerability arises due to the lack of proper validation of custom label parameters, which can be exploited by malicious actors to inject and execute script code.

Mitigation and Prevention

Learn how to mitigate the risk associated with CVE-2021-24834 and prevent potential exploitation.

Immediate Steps to Take

Users are advised to update YOP Poll to version 6.3.1 or higher to eliminate the vulnerability and enhance security.

Long-Term Security Practices

Regularly monitor and update plugins, employ security best practices, and restrict user privileges to prevent similar vulnerabilities in the future.

Patching and Updates

Stay informed about security patches and updates released by the plugin vendor to address known vulnerabilities promptly.