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If necessary, the mechanism can be changed or completely disabled.

Once the session is established, examine and set its properties using the provided methods.

Once the victim is authenticated, the SID (known to the attacker) remains the same and the session is compromised.

In Java, you can define how should the session ID be transmitted in To prevent session fixation attack using URL parameter, you should set tracking mode either to COOKIE or SSL.

A good countermeasure against the session fixation attack is to change Session ID every time user authenticates.

The way it can be changed differs depending on Servlet version.

However, in XSS the malicious javascript is actually served from the same domain, so this safeguard is avoided.

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Once the attacker has the Session Id obtained, they need to make sure the victim uses the same SID to authenticate. The easiest way to make the victim use the attacker's SID is when the server supports Session Id passed as an URL parameter.Cross-site scripting (XSS) is a type of vulnerability, where malicious javascript code can be executed in the victim's browser.This can be combined with various other vulnerabilities to perform an attack. For security reasons, you can set cookies only for the domain of your current page.Prior to version 3.1, there is no direct way to change session id while preserving this session's data.The only way how to handle post-authentication Session ID change is: Additionally, Servlets 3.1 provides new Http Session Id Listener, which can be used to get notifications whenever Session Id is changed.When a server is not using URL parameter to pass the SID, it usually uses cookies.While cookies are a safer approach, they can also be vulnerable.Please note - while servlet specification does not provide any session fixation protection out of the box, some of the application servers provide their own solution, like Tomcat.The good news is that Spring Security provides session fixation protection out of the box and it is enabled by default.Session Fixation is a type of vulnerability, where the attacker can trick a victim into authenticating in the application using Session Identifier provided by the attacker.Unlike Session Hijacking, this does not rely on stealing Session ID of an already authenticated user.


  1. I opened the session in my servlet when the user performed a successful login HttpSession session = request.getSessiontrue; session.setAttribute"name", name; then I wrote in the to

  2. Possible Duplicate Prevent user from going back to the previous secured page after logout I was wondering how to invalidate session in JSP and servlets. In my website a person when logs-out r.

  3. How to invalidate session on the basis of session ID in servlet 32. What is the equivalent to scriptlets for invalidating the session in jsp

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