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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <p style="margin: 10px 0 0 0; margin-top: 0">I'm not actually certain we're as vulnerable as it might seem. I'm not very up on this space, but it seems to me that the threat of me tricking another browser into submitting anything to the IdP under my session is already blocked if the containers actually enforce the COOKIE option for their sessions. We (can and do) set that in web.xml, and if you can't feed in JSESSIONID on the URL, then you can't make a submission like that work unless you can give somebody else your cookie.</p> <p style="margin: 10px 0 0 0">I don't know for a fact that containers enforce that. It's a bug if they don't. We certainly should check Jetty and Tomcat on that point.</p> </td>
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