So there is a possibility of running into a conflict, however, it has a very low possibility. More information on those settings is provided on: Get a shared session. The secure page would check for the session vars, not find them, and force the user to log in again. Only changing the id matters. Anyway, thanks John for the explanation.
In addition, I find that if user-level session storage handler is used. I think this causes bugs like 49462. So much so, it is not worth worrying about unless you have lots of concurrent users. Not data serialization session data requests. The possible values are 4, 5, or 6. After the second login the session would be found and they could continue. For example, when user ender elevator or subway connection can be lost in a way that session data is lost.
I would strongly suggest to always make sure the session entropy is set to something big enough just in case and use a shared session handler like memcached or redis. Then I updated the session vars with the login results and used the header function to switch to the secure location. Session data cannot be removed immediately by network reason. This may cause undesired results if the session id is stored in a db and checked, a solution is to check at the new entry point new tab or window if the user went back to the index page for an existing session. These are the basics for me, but you can build upon. For example, files save handler locks session data file and if other request try to read it, it waits unlock.
Shared session is rare in real apps, but such apps may exist. Then there is no problem at all. You have to wait until the next page request from the same source to read the cookie. . Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
Refer to even example save handler in the manual was wrong. Possibly network is dangerous or app has vulnerability or their network connection was too bad If error is raised for attacker, attacker could know their illegal access might be caught. Because the session id is cached you also have to explicitly set it the second time. Care should be taken when relying on the session for authentication. It's better to delete old session data to reduce risk of session hijack. As far as I can tell this affects both the default and custom session handling functions.
Currently there is no feasible way that synchronizes server and client data. I'm puting this down to trying to be too clever rather than to a bug per se. Example: I had a similar problem with session data. If however it does not then it is satisfactory. Why solution proposed by or can't be integrated into core Yii? This kind of attacks can be done by existing tools. To learn more, see our.
Thanks for contributing an answer to Information Security Stack Exchange! For instance, new request which does not have active session may result issuing multiple cookies at once. If it isn't unique, how should I go about enforcing uniqueness? Attackers can take advantage of this behavior to keep stolen session forever. Errors for accessing invalid session may be raised for either legitimate user or attacker. What is the current status of this issue? Immediate session data deletion disables session hijack attack detection and prevention also. Because if it's just random characters, couldn't you theoretically run into a conflict? Therefore, I would lock the file data as usual. To fix this issue, both server and client must have synchronization mechanism like distributed transaction. Thus, resulting in what seems to be a shorter hash.
Again, it happens only in Internet Explorer other browsers not affected , but on different machines just checked at home computer, previously validated at few office machines. Same as before - no session, no regenerate id. Therefore, old session data is valid as long as it is accessed even if it should be discarded as invalid session. I've decided that, given a relatively short lifetime for a session, it's really nothing to worry about. Therefore, old session data is valid as long as it is accessed even if it should be discarded as invalid session. When entering checkout, I often get There has been an error processing your request error.
Closing the session and then manipulating session variables is not something many would do by intent. So I lost data from my current session wrong session-id. This is known design issue for a long time Session manager sets following data when there is session data should be deleted. A better option would be something that utilizes randomness, such as- I wrote the following code for a project I'm working on- it attempts to resolve the regenerate issue, as well as deal with a couple of other session related things. So I would like to fix this issue in near future hopefully. Have a question about this project? Only when a user visits a page that depends on unsaved session data will there be any indication of the failure.