CVE-2021-24702 : Vulnerability Insights and Analysis

This article provides detailed information about CVE-2021-24702, a vulnerability found in the LearnPress WordPress LMS Plugin version prior to 4.1.3.1 that could lead to Cross-Site Scripting attacks by high privilege users.

Understanding CVE-2021-24702

CVE-2021-24702 is a security vulnerability identified in the LearnPress WordPress plugin version below 4.1.3.1. The flaw allows high privilege users to execute Cross-Site Scripting attacks, leveraging unfiltered inputs within course settings.

What is CVE-2021-24702?

The LearnPress WordPress plugin before version 4.1.3.1 fails to properly sanitize or escape various inputs in course settings, enabling high privilege users to conduct Cross-Site Scripting attacks when the unfiltred_html capability is disallowed.

The Impact of CVE-2021-24702

The vulnerability poses a significant risk as it enables malicious users with elevated privileges to inject and execute arbitrary scripts within the plugin's settings, potentially compromising the security and integrity of the WordPress LMS platform.

Technical Details of CVE-2021-24702

The technical aspects of CVE-2021-24702 are crucial to understanding its nature and potential risks involved.

Vulnerability Description

The vulnerability arises from inadequate sanitization of user inputs within course settings, allowing attackers to inject malicious scripts that can be executed in the context of high privilege users, leading to Cross-Site Scripting attacks.

Affected Systems and Versions

The CVE-2021-24702 impacts the LearnPress WordPress LMS Plugin versions prior to 4.1.3.1, leaving instances running on these versions vulnerable to exploitation.

Exploitation Mechanism

Malicious actors can exploit this vulnerability by leveraging the unfiltered_html capability within the plugin, enabling them to inject and execute scripts within course settings, bypassing security restrictions.

Mitigation and Prevention

Proactive measures must be taken to mitigate the risks associated with CVE-2021-24702 and prevent potential exploitation.

Immediate Steps to Take

Update the LearnPress plugin to version 4.1.3.1 or later to patch the vulnerability and prevent further exploitation.
Monitor user-generated content within course settings for any suspicious scripts or inputs.

Long-Term Security Practices

Implement input validation and sanitization mechanisms to prevent similar vulnerabilities in future plugin updates.
Educate users on safe content practices and the risks associated with untrusted inputs within the platform.

Patching and Updates

Regularly check for security updates from the plugin vendor and apply patches promptly to address known vulnerabilities and enhance the overall security posture of the WordPress LMS platform.