Concurrent session control
Behaviour when Concurrent Sessions are exceeded Set max-sessions="-1" in case you do not want to limit the number of sessions, but still would like a reference to the SessionRegistry as explained above. Note that the element automatically registers a ConcurrentSessionFilter in the filter stack. In your security configuration, addĮxpired-url='/your-page-here' /> Using the security xml namespace makes this real easy.
![concurrent session control concurrent session control](https://jackrabbit.apache.org/archive/wiki/JCR/attachments/115513413/115513419.png)
Next is injecting a ConcurrentSessionControlAuthenticationStrategy. The SessionRegistry is a nice entry point to get information on the current logged in users, even if you’re not interested in concurrent session control. Also note that injecting this listener provides the SessionRegistry, which can now be even if you have not defined it explicitly. We will manage session concurrency in the application, so this is critical. This will make sure that when a timeout triggers a session invalidation the application will know about it. The HttpSessionEventPublisher listens to the servlet container for sessions being created or destroyed and publishes corresponding Spring Security events.
HttpSessionEventPublisher You need to inject a session events listener in your web.xml:![concurrent session control concurrent session control](https://slidetodoc.com/presentation_image/01c737729a932cbd3f0a2b63abcd909e/image-21.jpg)
However, to apply application logic to your sessions your application needs knowledge of the user sessions. We specified the timeout in the web.xml, which is handled by the servlet container (Tomcat in our case) – no Spring Security involved yet. In that case, it is a good idea to log out the user from the initial session, which is the approach we took. For a security critical application, it is likely that if a user tries to log in a second time he or she forgot to log out the first time.
CONCURRENT SESSION CONTROL SOFTWARE
While not strictly security as I see it, this is also useful if you supply software with paid subscription accounts. Restricting the number of concurrent sessions will make sure accounts can no longer be shared between multiple or too many users. Since users might use different devices you might want to allow more than one session, but a maximum for the number of sessions is good practice. Normally, each user has its own account, so it’s logical that a user can be logged in only once at a time. Concurrent session controlĬoncurrent session control for our use case amounts to controlling the number of sessions a user can have at the same time. The tracking-mode plays no essential role here, but it is what we use in our app.
In your web.xml, add the timeout to your session-config:Setting the timeout is easy, so this really is a quick win. For these reasons it is also very important never to expose a session ID in a URL, but I’m getting off topic here … Moreover, if an account is important enough, physical break-ins to get to a device with a session that remains valid is not unimaginable. Another reason is that this also limits possibilities for smart hackers: especially in combination with other attacks like CSRF or click-jacking, session hijacking is a big risk. This alone is enough reason to invalidate a user session after a certain time, e.g.
![concurrent session control concurrent session control](https://www.manageengine.com/products/self-service-password/images/how-to-restrict-multiple-login-for-users-in-adselfservice-plus.png)
Here you can find some nice examples of the problem never lying with the internet, but with the human mistakes in using it.Īn obvious mistake a user can make is forgetting to log out on a public computer, or if he’s unlucky – on a private device that is stolen at a later time. Category number two on OWASP top ten security threats of 2013 is broken authentication and session management. In general, sessions should be managed as restrictively as possible for your web application. We use Spring Security and Spring-MVC and I will talk about implementing a session timeout and concurrent session control: nice subjects from the trenches. As usual, because you haven’t yet had time to put any real effort into it, some security risks did surface. Private Date = FetchType.A web application me and my team are building recently underwent a security review.
CONCURRENT SESSION CONTROL PASSWORD
I've checked the getters and setters for the User class and they are all set and the password column is not annotated Nullable or Not Nullable. I tried to test today to create a new User and I get the error message rawPassword cannot be Null. The BCryptEncoder class was working well before.