Preventing Abuse of Cookies Stolen by XSS

摘要

Cross Site Scripting (XSS) makes victims execute an arbitrary script and leaks out personal information from victims' computers. An adversary can easily get victim's cookies by the XSS attack. If the adversary cannot use the stolen cookies to impersonate the victim, stealing cookie has no meaning. Therefore, we propose a method to prohibit the abuse of stolen cookies in order to make it ineffective to steal cookies through the XXS attack. The proposed method uses onetime password and challenge-response authentication to identify whether a person is a valid owner of the cookie or not.