WordPress Custom Tables Cross-Site Scripting Scanner

The WordPress Custom Tables plugin is an add-on used within WordPress, a widely-used open-source content management system. It is deployed by developers and website administrators who seek to create and manage custom database tables within their WordPress environments. The plugin allows users to define specific parameters, structure data, and integrate these tables into their web applications. Its versatility and ease of use make it popular among WordPress-driven websites that require customized data handling solutions. However, poor security practices in development or implementation could expose users to various vulnerabilities.

Cross-Site Scripting (XSS) is a common security vulnerability that allows attackers to inject harmful scripts into web pages viewed by other users. It typically occurs when a web application takes user input without carefully sanitizing or validating it, allowing a threat actor to execute arbitrary scripts within the user's browser. This vulnerability can lead to unauthorized actions, data theft, and escalation of access privileges by exploiting the input fields of applications. For instance, an attacker might exploit an XSS vulnerability by inserting a script as input, which then triggers harmful actions within the site's context.

The XSS vulnerability in the WordPress Custom Tables plugin is specifically found in the key parameter, as highlighted by the template. Exploiting this involves manipulating the 'key' parameter within the 'iframe.php' file, allowing script injection that can initiate an alert in the user's browser to demonstrate the proof-of-concept. This technical flaw arises due to inadequate input validation or escaping, making injection possible and leading to potential code execution. As browsers treat such scripts from the trusted web server, they are executed without warnings, allowing the attacker to perform any number of actions unchecked.

Exploiting the XSS vulnerability could result in various damaging outcomes, primarily affecting the confidentiality and integrity of the data. An attacker could hijack user sessions, capture cookies, or redirect users to malicious sites. This might lead to unauthorized access to sensitive information, including user credentials or personal data, facilitating further exploits or data breaches. Users might unknowingly execute web requests under coercion, mimicking legitimate actions but executing malicious intents.

REFERENCES

• https://wpscan.com/vulnerability/211a4286-4747-4b62-acc3-fd9a57b06252
• https://www.acunetix.com/vulnerabilities/web/wordpress-plugin-custom-tables-key-parameter-cross-site-scripting-3-4-4/