As a workaround, you can simply roll-your-own session IDs instead of using the JRun ones. This will also make your applications more portable. Kevin Spett SPI Labs http://www.spidynamics.com/ ----- Original Message ----- From: "Christoph Schnidrig" <christoph.schnidrigat_private> To: <bugtraqat_private> Sent: Friday, February 28, 2003 9:35 AM Subject: JRun: The Easiness of Session Fixation > Hi all > > The the Session-ID Fixation paper available from > http://www.acros.si/papers/session_fixation.pdf mentions that JRun > accepts abritrary Session-ID's and create new sessions with the proposed > Session-ID. This means that it is possible to send the following URL > http://foo/bar?jsessionid=foo123 and the JRun server will accept and use > the proposed Session-ID (foo123). Furthermore the server will set a > cookie in users browser with the proposed Session-ID! Using this > technique, it is much easier to exploit this kind of attack and to enter > in other's web application sessions. > > Is anybody aware of a vendor patch or another workaround? Is it possible > to enforce the server to create a new Session-ID? > > > Thanks a lot > > Christoph > > >
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