In the realm of web security, Host Header Injection (HHI) is a subtle yet potent vulnerability that can compromise the integrity of web applications. This vulnerability arises when an application implicitly trusts the Host header in HTTP requests without adequate validation, allowing attackers to manipulate server behavior, potentially redirecting users to malicious sites or intercepting sensitive data. This blog post primarily focuses on demonstrating this vulnerability through the demo application. By understanding the mechanics and impact of HHI, developers can fortify their applications against such threats.
In the digital age, where data fuels our everyday transactions and interactions, the security of our databases stands as one of the main concerns. SQL Injection, common and vicious attack vector, exemplifies the critical importance of guarding databases against potential bad actors. The attack may result in a breach or loss of data, so that is why we should take a close look at this attack.
In 2021 OWASP placed "Broken Access Control" at first place amongst Top 10 Web Application Security Risks. Web Parameter Tampering is just one type of web attack that falls into this group. Even if it seems simple, and you think that "only junior can introduce such threat to web application", you should still be aware of this attack. As the OWASP ranking shows, a lot of developers think like that and hackers will be happy to exploit it.