Exploiting Misconfigured Routing to Breach Internal Networks through SSRF.
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Disclaimer:
The techniques described in this document are intended solely for ethical use and educational purposes. Unauthorized use of these methods outside approved environments is strictly prohibited, as it is illegal, unethical, and may lead to severe consequences.It is crucial to act responsibly, comply with all applicable laws, and adhere to established ethical guidelines. Any activity that exploits security vulnerabilities or compromises the safety, privacy, or integrity of others is strictly forbidden.
The vulnerability arises from inconsistent parsing of the request host, particularly in how different components of a web application (like front-end reverse proxies, load balancers, or the backend logic) interpret the Host header and other URL parts.
In this specific lab environment from PortSwigger’s Web Security Academy, the application suffers…