Hacking your first OAuth on the Web application

This article delves into how attackers can exploit OAuth vulnerabilities, focusing on misusing redirect_uri and state parameters to take over user accounts. The redirect_uri parameter, if poorly validated, can lead to unauthorized redirection to malicious servers, allowing attackers to capture sensitive information. Similarly, improperly implementing the state parameter can make OAuth flows susceptible to Cross-Site Request Forgery (CSRF) attacks.

Web application developers can safeguard their OAuth implementations from these common attack vectors by understanding these vulnerabilities and implementing the recommended prevention strategies. I’m covering these methods of account takeovers as both of these vulnerabilities are most commonly found in OAuth-based authentications. Let's begin.

1. OAuth account takeover via Open redirection
2. Account takeover via CSRF on OAuth via the state parameter
3. Account takeover via other OAuth attacks
4. Mitigation strategies for Token Reply Attack
5. Conclusion

Click here to know the details: Hacking your first OAuth on the Web application: Account takeover using Redirect and State parameter