session-hijacking

问题 Can anyone give a clear difference between session fixation, session replay and session hijacking attacks? I have read many articles, but the matter is still unclear between session hijacking and session replay attacks. 回答1: Both fixation and hijacking have ultimately the same goal - gaining access to a session. They only differ in how you achieve that. Session hijacking is simply the act of stealing an existing, valid session cookie. Most commonly through sniffing network traffic (a MITM

问题 Most Web Applications use cookies to manage the session for a user and allow you to stay logged in even if the browser was closed. Lets pretend we did everything in the book to make sure the cookie itself is save. encrypt the content set http only set secure ssl is used for the connection we check for tampering with the content of the cookie Is it possible to prevent someone with physical access to the machine to copy the cookie and reuse it on another machine and thus stealing the session?

问题 I'm looking for a plain English, "for dummies" explanation of how does JSESSIONID work from security aspects Can someone who merely knows my current JSESSIONID impersonate / hijack my session? In what scenarios JSESSIONID will be part of the URL, and is this OWASP #2 security risk (scenario #1) still relevant for latest versions of Tomcat / Glassfish, and if so, what to "turn off/on" to prevent it? 回答1: Q: Can someone who merely knows my current JSESSIONID impersonate / hijack my session? A:

问题 I have been reading up on session fixing/hijacking recently, and understand the theory. What I don't understand is how this would be exploited in practice. Would you have to tamper with your browser to make use of the stolen cookies? Append it to the URL and pass it to the web application? Or would you write some sort of custom script to make use of this, and if so what would it do? I'm not trying to ask for help with this or examples, but I am trying to learn more and understand. Any help is

问题 I'd like to find out what session ID hijacking protection is built into the current version of ASP.NET. I recently saw this very informative article that explains how session security can be enhanced by implementing an additional layer that encodes the IP address and user agent header into the session id. These details are then verified on each subsequent request. It seems that this article was written for ASP.NET 1.1 so I'd like to know if anything similar is now built into ASP.NET. Is it

问题 I'd like to find out what session ID hijacking protection is built into the current version of ASP.NET. I recently saw this very informative article that explains how session security can be enhanced by implementing an additional layer that encodes the IP address and user agent header into the session id. These details are then verified on each subsequent request. It seems that this article was written for ASP.NET 1.1 so I'd like to know if anything similar is now built into ASP.NET. Is it

问题 Why is it always recommended that session_regenerate_id() should be used before the user's session is created. As per my perception, session_regenerate_id() should be used once the user session id is created, and we need to re-generate it so as to mitigate the session fixation attack by the hacker. Please suggest!! 回答1: I'm not sure where you've gotten recommendation from, but the session_regenerate_id manual shows it being used after session_start, so your assumptions would be correct. 回答2:

问题 I'm developing an application in Java which seems to have a session hijacking vulnerability. In order to prevent this, the recommendation is to change the JSESSION ID for a user after log in My application is based on Struts 2.0 and Tomcat 7 and I have implemented a code to change the JSESSIONID after the user logs in. However i am facing the following problem while running the code. java.lang.IllegalStateException: setAttribute: Session already invalidated at org.apache.catalina.session

问题 From what I understand about the way session hijacking works I don't see any advantage that Forms Authentication has over storing user authentication info in the ASP.NET session. Both Forms Authentication and ASP.NET session use cookies that are both hashed to verify integrity but both can't protect against a hacker stealing the cookie and masquerading as the user. So is there any reason as far as security is concerned, for using Forms Authentication over storing authentication info in the

问题 Threads such as PHP Session Fixation / Hijacking and some people like Chris Shiflett recommend checking the user agent ( $_SESSION['HTTP_USER_AGENT'] ) to help check for session validity. Some resources even recommend something like this: <?php $string = $_SERVER['HTTP_USER_AGENT']; $string .= 'SHIFLETT'; /* Add any other data that is consistent */ $fingerprint = md5($string); ?> However, Chris Snyder says that "the universe of browser agents is miniscule in comparison to the universe of