Zebra_Form PHP Library Cross-Site Scripting Scanner

Zebra_Form PHP Library is a lightweight PHP library used for generating and validating HTML forms. It is implemented in various WordPress plugins for efficient form handling and management. Developers and webmasters employ this library to minimize manual coding for form processing. It is favored for its ease of use and compatibility with multiple plugins. As open-source software, it is widely used in commercial and personal projects. This library aids in the simplification of form validation processes in web development tasks.

The Cross-Site Scripting (XSS) vulnerability allows attackers to inject malicious scripts into web pages viewed by other users. The scripts can execute in the context of the user's browser, leading to unauthorized actions or data theft. It predominantly affects websites that dynamically generate web pages without proper validation. This vulnerability is commonly exploited to execute arbitrary code, manipulate web content, or bypass access controls. Ensuring proper input sanitization can mitigate such vulnerabilities. Recognizing and addressing XSS vulnerabilities remains critical for web application security.

The vulnerability in the Zebra_Form PHP Library exists due to inadequate sanitization of user inputs in forms processed via process.php. Attackers can exploit this by sending specially crafted requests, injecting scripts into the output. The vulnerable endpoint fails to properly encode user inputs, allowing scripts to be executed within the user's browser. This flaw can be manipulated to display malicious content, capture sensitive data, or alter form behavior. The parameter involved allows the insertion of script elements without validation, leading to potential security breaches. Monitoring for unusual activity on the endpoint could help in early detection of exploitation attempts.

When exploited, this vulnerability can lead to various malicious outcomes, such as data theft, session hijacking, and unauthorized actions performed on behalf of legitimate users. Users may unknowingly execute scripts created by attackers, resulting in compromised credentials or accounts. This breach of security may further lead to the installation of malware or unauthorized data access. Affected websites may experience reputational damage and loss of trust from users. Immediate rectification is needed to prevent potential exploitation and maintain application integrity.

REFERENCES

• https://blog.wpscan.com/2021/02/15/zebra-form-xss-wordpress-vulnerability-affects-multiple-plugins.html
• https://wpscan.com/vulnerability/e4b796fa-3215-43ff-a6aa-71f6e1db25e5