CVE-2021-24489 : Exploit Details and Defense Strategies

WordPress plugin 'Request a Quote' before version 2.3.9 is vulnerable to Stored Cross-Site Scripting, allowing attackers to execute malicious scripts in the admin dashboard.

Understanding CVE-2021-24489

This CVE ID identifies a security issue in the 'Request a Quote' plugin for WordPress, where improper handling of settings in the admin dashboard leads to Stored Cross-Site Scripting vulnerabilities.

What is CVE-2021-24489?

The Request a Quote WordPress plugin before version 2.3.9 fails to properly sanitize, validate, or escape certain settings, enabling authenticated attackers to perform Stored Cross-Site Scripting attacks.

The Impact of CVE-2021-24489

This vulnerability poses a risk of executing arbitrary scripts within the context of a user account with access to the admin dashboard, potentially leading to data theft, privilege escalation, or other malicious activities.

Technical Details of CVE-2021-24489

The following technical aspects outline the specifics of CVE-2021-24489.

Vulnerability Description

The vulnerability arises due to the lack of proper sanitization of user input within the plugin's settings, allowing attackers to inject and execute malicious scripts.

Affected Systems and Versions

Vendor: Unknown
Affected Product: Request a Quote
Versions Affected: Custom version less than 2.3.9
Default Status: Unaffected
Plugin URL: WordPress Request a Quote Plugin

Exploitation Mechanism

Attackers who exploit this vulnerability can leverage it to inject and execute arbitrary scripts in the context of an authenticated user with access to the plugin's settings.

Mitigation and Prevention

Protecting your WordPress site from CVE-2021-24489 requires immediate action and long-term security practices to prevent similar vulnerabilities.

Immediate Steps to Take

Update the 'Request a Quote' plugin to version 2.3.9 or later to patch the vulnerability.
Monitor admin activities for any suspicious behavior.

Long-Term Security Practices

Regularly update plugins and themes to latest versions.
Implement security plugins that provide additional layers of protection.

Patching and Updates

Keep track of security advisories from plugin developers and promptly apply updates to ensure the security of your WordPress site.