IP-API EDNS Content-Security-Policy Bypass Scanner

IP-API EDNS is a tool primarily used in debugging and developing environments, often involving testing and security research. Developers and security experts utilize this tool to evaluate the implementation of Content-Security-Policy in web applications. It is tailored toward sites that employ EDNS features in their HTTP headers. The primary users are those who seek to ensure robust security configurations and streamline their debugging processes. The software is prevalent in environments where DNS manipulation is critical. It's particularly vital for modern web applications prioritizing security and performance.

This scanner identifies Content-Security-Policy Bypass vulnerabilities, a notable security risk. This vulnerability allows attackers to inject malicious scripts into web applications, circumventing security policies intended to restrict such actions. The exploit primarily targets misconfigurations in content security headers that can be leveraged through EDNS requests. By doing so, malicious entities can execute scripts that should otherwise be blocked, compromising user data and application integrity. Detecting these vulnerabilities is crucial as they represent a common vector for XSS attacks. Ensuring CSP is appropriately configured mitigates many associated risks.

The vulnerability within IP-API EDNS lies in its handling of headers, particularly where content security is concerned. Session-endpoints are vulnerable, making them potential targets for script insertion attacks. A specific parameter exploited is the Content-Security-Policy header itself, which when manipulated, allows cross-origin scripts to execute. This involves sending crafted DNS requests that bypass security controls. The template uses payload injections that aim to sustain an alert function, demonstrating a successful breach. Monitoring and measuring responses is key to discerning whether an exploit has occurred.

If exploited, malicious parties can launch drive-by attacks, leading to unauthorized data access and manipulation. User sessions could be hijacked, resulting in identity theft or loss of sensitive information. Additionally, offenders could alter application behavior on a victim's session, deploying persistent threats or spreading malware. The impact extends to compromised server integrity, often leading to blacklisting or severe reputational damage. In some cases, an attacker might further exploit secondary vulnerabilities revealed post-breach. Ultimately, the application could face extensive downtime while rectifying these security lapses.

REFERENCES

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