CVE-2021-24729 : Exploit Details and Defense Strategies

A stored Cross-Site Scripting (XSS) vulnerability has been identified in the Logo Showcase with Slick Slider WordPress plugin before version 1.2.4. This flaw could be exploited by users with a role as low as Author to execute malicious scripts via post metadata.

Understanding CVE-2021-24729

This CVE highlights a security issue in the Logo Showcase with Slick Slider plugin that allows for stored XSS attacks.

What is CVE-2021-24729?

The Logo Showcase with Slick Slider WordPress plugin before 1.2.4 is vulnerable to stored Cross-Site Scripting due to inadequate sanitization of Grid Settings.

The Impact of CVE-2021-24729

Users with permissions as low as Author can exploit this vulnerability to conduct stored XSS attacks through post metadata of the Grid logo showcase.

Technical Details of CVE-2021-24729

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability arises from the plugin's failure to properly sanitize input in Grid Settings, enabling the execution of malicious scripts.

Affected Systems and Versions

Logo Showcase with Slick Slider versions earlier than 1.2.4 are affected by this security issue.

Exploitation Mechanism

Attackers with Author privileges can insert malicious scripts into post metadata associated with the Grid logo showcase, leading to XSS attacks.

Mitigation and Prevention

To secure systems against CVE-2021-24729, immediate action must be taken.

Immediate Steps to Take

Ensure the plugin is updated to version 1.2.4 or newer. Additionally, restrict plugin access to trusted users only.

Long-Term Security Practices

Regularly monitor and update plugins to ensure they are free from vulnerabilities. Educate users on safe practices to prevent XSS attacks.

Patching and Updates

Keep the Logo Showcase with Slick Slider plugin up to date with the latest security patches to prevent exploitation of known vulnerabilities.