CVE-2021-24888 : Security Advisory and Response

The ImageBoss WordPress plugin before version 3.0.6 is affected by a Stored Cross-Site Scripting (XSS) vulnerability that could be exploited by high privilege users.

Understanding CVE-2021-24888

This CVE relates to a security issue in the ImageBoss WordPress plugin that allows attackers to perform Cross-Site Scripting attacks due to improper sanitization of input fields.

What is CVE-2021-24888?

The ImageBoss WordPress plugin, if not updated to version 3.0.6, fails to properly sanitize and escape the Source Name setting. This oversight enables users with elevated privileges to execute XSS attacks on vulnerable websites.

The Impact of CVE-2021-24888

The vulnerability could result in unauthorized script execution, compromising user data, session hijacking, defacement of web pages, and other malicious activities.

Technical Details of CVE-2021-24888

The vulnerability lies in the ImageBoss plugin for WordPress, specifically in versions earlier than 3.0.6. The lack of input validation allows malicious users to inject and execute scripts on targeted websites.

Vulnerability Description

The flaw arises due to the plugin's failure to properly sanitize user inputs, leading to unescaped content execution within the context of the affected site.

Affected Systems and Versions

ImageBoss versions prior to 3.0.6 are vulnerable to this exploit, exposing websites that utilize the plugin to the risk of XSS attacks.

Exploitation Mechanism

Attackers with high-level access can leverage this vulnerability to inject and execute malicious scripts within the plugin's Source Name field, potentially impacting the entire website.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-24888, users are advised to take immediate action and follow security best practices.

Immediate Steps to Take

Users should update the ImageBoss WordPress plugin to version 3.0.6 or higher to eliminate the vulnerability and enhance website security.

Long-Term Security Practices

It is crucial to regularly update plugins, themes, and WordPress core to protect against known vulnerabilities and ensure website resilience.

Patching and Updates

Maintaining a proactive approach by promptly applying security patches and staying informed about potential security issues is essential in safeguarding websites from exploits.