SSL Renegotiation Vulnerability Scanner

What is SSL Renegotiation Vulnerability?

SSL Renegotiation is a vulnerability that allows attackers to manipulate the SSL/TLS handshake process to gain unauthorized access to secure communications. This weakness is caused by a lack of proper validation during the renegotiation process, which can lead to session data exposure and man-in-the-middle attacks.

In a renegotiation attack, an attacker can trick a server into renegotiating the SSL/TLS session with malicious data, effectively revealing encrypted data that was supposed to be protected. This can expose sensitive information such as passwords, session tokens, and other confidential data transmitted over the connection.

Mitigations for Renegotiation attacks involve disabling SSL renegotiation, using modern SSL/TLS protocols like TLS 1.2 or TLS 1.3 that do not support insecure renegotiation, and implementing stricter control over session data handling.