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Re: [OAUTH-WG] Multi-AS State Re-Use

Nat Sakimura <sakimura@gmail.com> Wed, 11 May 2016 21:59 UTC

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From: Nat Sakimura <sakimura@gmail.com>
Date: Wed, 11 May 2016 21:59:29 +0000
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To: Daniel Fett <fett@uni-trier.de>, oauth@ietf.org
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Subject: Re: [OAUTH-WG] Multi-AS State Re-Use
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Agreed. Also, pointing to OWASP guide or something for CSRF token may be
useful.
On Tue, May 10, 2016 at 11:37 Daniel Fett <fett@uni-trier.de> wrote:

> Regardless of what state actually is, the documentation (also the one
> for OIDC) should make clear that the same state should not be sent to
> two different AS, and that a state issued for AS #1 should be invalid
> for AS #2.
>
> Am 10.05.2016 um 09:31 schrieb Anthony Nadalin:
> > STATE can be anything, it does not have to be a NONCE so changing this
> > would cause issues at this time for existing deployments
> >
> >
> >
> > *From:*OAuth [mailto:oauth-bounces@ietf.org] *On Behalf Of *Nat Sakimura
> > *Sent:* Monday, May 9, 2016 7:34 PM
> > *To:* Guido Schmitz <g.schmitz@gtrs.de>; oauth@ietf.org
> > *Subject:* Re: [OAUTH-WG] Multi-AS State Re-Use
> >
> >
> >
> > As far as I am aware of, state was meant to be nonce. Replay possibility
> > etc. were known. It is probably a bad documentation that every reviewers
> > missed because they were assuming it.
>
>
> --
> Informationssicherheit und Kryptografie
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-- 
Nat Sakimura
Chairman of the Board, OpenID Foundation
Trustee, Kantara Initiative

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