Third-party software could cause logouts, or the session could be split into two separate sessions.If the implementation of sessions includes transmitting the SID through GET or POST variables, then this might also render the "back" button in most browsers unusable, as the user would then be using an older, invalid, session identifier from a previous request.It may be required to send the session identifier on the URL in order to overcome this limitation.
An alternative attack scenario does not require Alice to log into a site.
Rather, simply by fixing the session, Mallory may be able to spy on Alice and abuse the data she enters.
When enabling HTTPS security, some systems allow applications to obtain the SSL / TLS session identifier.
Use of the SSL/TLS session identifier is very secure, but many web development languages do not provide robust built-in functionality for this.
If the user protects their account with two passwords, then it can be solved to a great extent.
This technique is also useful against cross-site request forgery attacks.Additionally, session identifiers (SIDs) in query strings enable other risk and attack scenarios; Note: Cookies are shared between tabs and popped up browser windows.If your system requires to be hit with the same domain ( code=site2 ), cookies may conflict with one another between tabs.Implementation of such a system is simple, as demonstrated by the following: is invalid.Mallory is thus unsuccessful in the session fixation attempt.SSL/TLS session identifiers may be suitable only for critical applications, such as those on large financial sites, due to the size of the systems.