CVE-2021-24634 : Exploit Details and Defense Strategies

The Recipe Card Blocks by WPZOOM WordPress plugin before version 2.8.3 is vulnerable to Stored Cross-Site Scripting attacks, allowing users with a role as low as a contributor to exploit certain properties.

Understanding CVE-2021-24634

This CVE identifies a security issue in the Recipe Card Blocks plugin by WPZOOM that exposes websites to Stored Cross-Site Scripting attacks.

What is CVE-2021-24634?

The vulnerability in Recipe Card Blocks plugin allows contributors to execute Stored Cross-Site Scripting attacks due to improper sanitization of specific properties.

The Impact of CVE-2021-24634

The CVE enables attackers with lower-level access to inject malicious scripts into the plugin's properties, potentially compromising the integrity of the affected WordPress websites.

Technical Details of CVE-2021-24634

The technical details provide insights into the vulnerability, affected systems, and how the exploitation can occur.

Vulnerability Description

The vulnerability arises from the inadequate sanitization and escaping of properties within the Recipe Card Block, making it susceptible to Stored Cross-Site Scripting attacks.

Affected Systems and Versions

The Recipe Card Blocks plugin version less than 2.8.3 is impacted by this CVE, allowing users with as low a role as contributor to exploit the vulnerability.

Exploitation Mechanism

By manipulating properties such as ingredientsLayout, iconSet, steps, and recipeTitle, threat actors can inject harmful scripts, leading to Stored Cross-Site Scripting attacks.

Mitigation and Prevention

Here are the necessary steps to mitigate the risks posed by CVE-2021-24634.

Immediate Steps to Take

Update the Recipe Card Blocks plugin to version 2.8.3 or newer to patch the vulnerability.
Regularly monitor and review user roles and permissions to minimize the impact of potential intrusions.

Long-Term Security Practices

Educate website administrators and contributors about secure coding practices and the risks of XSS attacks.
Employ security plugins and tools to scan for vulnerabilities and enforce additional layers of protection.

Patching and Updates

Stay informed about security releases and promptly apply patches provided by WPZOOM to address known vulnerabilities and enhance the plugin's security.