Re: [OAUTH-WG] What Does Logout Mean?
David Waite <david@alkaline-solutions.com> Wed, 28 March 2018 18:25 UTC
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From: David Waite <david@alkaline-solutions.com>
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Date: Wed, 28 Mar 2018 12:25:23 -0600
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Cc: Bill Burke <bburke@redhat.com>, Mike Jones <Michael.Jones@microsoft.com>, Roberto Carbone <carbone@fbk.eu>, "oauth@ietf.org" <oauth@ietf.org>, Nat Sakimura <nat@sakimura.org>
To: "Richard Backman, Annabelle" <richanna@amazon.com>
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Subject: Re: [OAUTH-WG] What Does Logout Mean?
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> On Mar 28, 2018, at 11:40 AM, Richard Backman, Annabelle <richanna@amazon.com> wrote: > > I'm reminded of this session from IIW 21 <http://iiw.idcommons.net/What_Does_%E2%80%9CLogOUT%E2%80%99_mean%3F>. ☺ I look forward to reading the document distilling the various competing use cases and requirements into some semblance of sanity. I was just thinking how much I’d like to discuss this at an IIW. While developing the DTVA submission I wound up taking IMHO a different stance on sessions and logout, both technically and conceptually. > > > If the framework has no way of invalidating a session across the cluster… > > Is this a common deficiency in application frameworks? It seems to me that much of the value of a server-side session record is lost if its state isn’t synchronized across the fleet. Most application frameworks are relatively simple - they initiate a session and maintain it locally. They don’t have a single session record that is maintained across all applications in a domain. Even frameworks with native support for federation protocols or form-based SSO wind up using this authentication to create an application-specific session. Many also attempt to maintain the session information in an ideally integrity-protected, time limited, etc cookie, similar to an access token, rather than having a database within their application for synchronizing the session state. You wind up needing an additional state mechanism in this case to record invalidated sessions/tokens, which is typically not provided by frameworks. This was one of the primary focuses of my DTVA submission - a REST API where you could submit the `sid` of a token in order to find out if it had been invalidated. If you were using some cookie-based storage mechanism, tossing the `sid` in let you make this API call after discarding the id_token - hopefully allowing for application developers to add checks for an invalidated session as part of their global pipeline. -DW
- [OAUTH-WG] What Does Logout Mean? Mike Jones
- Re: [OAUTH-WG] What Does Logout Mean? Bill Burke
- Re: [OAUTH-WG] What Does Logout Mean? Richard Backman, Annabelle
- Re: [OAUTH-WG] What Does Logout Mean? David Waite
- Re: [OAUTH-WG] What Does Logout Mean? Bill Burke
- Re: [OAUTH-WG] What Does Logout Mean? Richard Backman, Annabelle
- Re: [OAUTH-WG] What Does Logout Mean? Bill Burke
- Re: [OAUTH-WG] What Does Logout Mean? Richard Backman, Annabelle
- Re: [OAUTH-WG] What Does Logout Mean? Bill Burke
- Re: [OAUTH-WG] What Does Logout Mean? Richard Backman, Annabelle
- Re: [OAUTH-WG] What Does Logout Mean? Bill Burke
- Re: [OAUTH-WG] What Does Logout Mean? Phil Hunt