HSForms Content-Security-Policy Bypass Scanner

HSForms is a widely used form creation and management tool integrated into various web applications and platforms. It is designed to enhance user interaction, allowing businesses to gather user information efficiently. The tool is used in a variety of sectors including e-commerce, education, and healthcare due to its ease of use and flexibility. This software helps streamline data collection processes, create custom forms, and improve customer engagement online. Many organizations rely on HSForms for its ability to quickly deploy forms without the need for extensive development resources, making it a crucial component in many digital ecosystems.

The scanner detects vulnerabilities relating to Content-Security-Policy bypass within HSForms, a mechanism designed to prevent cross-site scripting attacks. CSP is a significant web security feature that helps to prevent various types of code injection attacks, such as XSS. Bypassing the content security policy can lead to dangerous XSS attacks, compromising user data and the integrity of web applications. The scanner focuses on identifying the presence of unsafe CSP configurations in web applications utilizing HSForms. Identifying and mitigating these vulnerabilities is essential for maintaining the security posture of web applications and protecting user data from malicious actors.

Technical details about the vulnerability checked include potential leakage of sensitive data, hijacking of user sessions, and unauthorized actions on behalf of users. The vulnerable endpoint typically involves HTTP requests containing headers with weak or absent content security policies. The scanner tests these endpoints by attempting script injections via the vulnerable parameters, simulating attacks that could exploit CSP weaknesses. It also analyzes the server's response to determine if the injected payload executes, confirming a successful bypass if true. The use of both HTTP and headless testing techniques ensures a comprehensive examination of CSP configurations and their effectiveness against XSS.

When malicious actors exploit this vulnerability, the possible effects include the execution of unauthorized scripts, compromising user accounts and data. This can lead to data theft, session hijacking, and ultimately loss of user trust and business reputation. Attackers could manipulate UI components, redirect users to phishing pages, or execute denial-of-service attacks. The exploitation of such a vulnerability could also lead to regulatory fines and legal action if sensitive user data is exposed. Ensuring protection against CSP bypass is critical for maintaining web application security and compliance with data protection regulations.

REFERENCES

• https://github.com/renniepak/CSPBypass/blob/main/data.tsv