Re: [OAUTH-WG] Quick question about error response for "response_type=unknown"

2012-02-20 Thread William Mills
I does allow some parts of your server config to be discovered.  More of a problem in error responses is usually echoing back the user data, or allowing user enumeration for example.  Care is required, but you don't have a ton of options here. From: Igor Fayn

Re: [OAUTH-WG] [apps-discuss] Apps Area review of draft-ietf-oauth-v2-threatmodel-01

2012-02-20 Thread Igor Faynberg
Yet another +1 Igor On 2/20/2012 5:19 PM, André DeMarre wrote: +1 for keeping the rationale easily accessible in non-normative security documents. Doing so is great for everyone, implementors and spec authors alike. Security can be very nuanced, and some countermeasures are easy to overlook. A

Re: [OAUTH-WG] [apps-discuss] Apps Area review of draft-ietf-oauth-v2-threatmodel-01

2012-02-20 Thread André DeMarre
+1 for keeping the rationale easily accessible in non-normative security documents. Doing so is great for everyone, implementors and spec authors alike. Security can be very nuanced, and some countermeasures are easy to overlook. Also, being transparent with security rationale encourages people to

Re: [OAUTH-WG] Quick question about error response for "response_type=unknown"

2012-02-20 Thread Igor Faynberg
Could there be a potential security hole in providing an error response? (Not that I see it, but many problems in the past had been caused by helpful responese.) Igor On 2/20/2012 11:57 AM, William Mills wrote: Respond with an error in protocol. Thta won't include a redirect, and the client

Re: [OAUTH-WG] Quick question about error response for "response_type=unknown"

2012-02-20 Thread William Mills
Respond with an error in protocol.  Thta won't include a redirect, and the client has to know what to do. From: nov matake To: oauth WG Sent: Monday, February 20, 2012 6:11 AM Subject: [OAUTH-WG] Quick question about error response for "response_type=unknow

[OAUTH-WG] Quick question about error response for "response_type=unknown"

2012-02-20 Thread nov matake
Hi OAuthers, My apologies if you already discussed this. When OAuth server received unknown response_type, how should the server handle the error? 1. Show the error to the user without redirecting back to the client 2. Redirect back to the client including the error in query 3. Redirect back to