Consequently, there’s no connection between the user’s identity and the ASP. Session IDs are by default managed by the built-in Session IDManager.
It takes care of various things, but most importantly (for this post) the creation and validation of session identifiers. NET has two ways of transmitting session IDs back and forth to the browser, either embedded in the url or through a session cookie.
With "session IDs in the URL" out of the way, we’ll (mostly) focus on session IDs in cookies for the remainder of this post.
With the default session state configuration the session ID it set in a cookie. NET is quite liberal in its session handling as long as it receives a valid session ID, i.e.
First things first, we’ll need to set the scene with an overview of how ASP.
NET handles identities and sessions and then we’ll return to the requirements.
It seems that authentication and session management is so difficult to get right that even the big players occasionally get in trouble.
I’ve blogged earlier about a Google 2-step verification vulnerability I discovered back when they were rolling out the system (yes, I admit it took more patience than effort to find that one), and if you do a Google search for "authentication flaw" you’ll get plenty of hits for many high profile sites.
NET session state, and it does so without regard to the identity of the current user.NET will accept any session ID from the browser as long as it’s structurally valid.Keep this in mind when reading on, now it’s time to look at those security requirements.a 24-character string consisting of characters a-z and 0-5.If the client does not provide a session ID or provides an invalid session ID, ASP. If the client supplies a valid session ID and there’s no session associated with that ID on the server, ASP.