Security Assessment on User Authentication by an HttpSendRequest Hooking in an HTTP Client

Most current user authentications on the web server use the server/client based HTTP protocol. In the past, the ID-password based user authentication is exposed the plaintext on the network, because of this problem, the user authentication using the SSL is researched. Through this solution, transferred the user authentication information is able to protect on the network. Nevertheless, a novel problem comes to the fore as an attack using vulnerability of the platform and it causes exposure of the user authentication information. In particular, the attacker utilizes the hooking technique for steal the user authentication information by HttpSendRequest function that sends the user authentication or connection related information. Therefore, in this paper, we analyze this kind of vulnerability and draw its result using implemented sample proof-of concept tools.