Re: [websec] Frame embedding: One problem, three possible specs?

[David Ross <[e-mail]>]

#3 is a narrowly scoped effort to standardize something that works pretty well today in practice (X-FRAME-OPTIONS).  A conflict with CSP would be bad, but per Adam it seems like overlap is looking less likely.  So proceeding down the current path on #3 sounds good to me.

David Ross
[e-mail]


-----Original Message-----
From: Adam Barth [mailto:[e-mail]] 
Sent: Thursday, July 07, 2011 3:24 PM
To: Thomas Roessler
Cc: Tobias Gondrom; Arthur Barstow; Brad Hill; Eric Rescorla; Alexey Melnikov; David Ross; Anne van Kesteren; Adrian Bateman; Brandon Sterne; Charles McCathieNevile; Maciej Stachowiak; Peter Saint-Andre; Michael(tm) Smith; Mark Nottingham; Jeff Hodges; [e-mail]; [e-mail]; [e-mail]
Subject: Re: Frame embedding: One problem, three possible specs?

My sense from talking with folks is that there isn't a lot of enthusiasm for supporting this use case in CSP at the present time.
We're trying to concentrate on a core set of directives for the first iteration.  If it helps reduce complexity, you might consider dropping option (1) for the time being.

Adam


On Thu, Jul 7, 2011 at 2:11 PM, Thomas Roessler <[e-mail]> wrote:
> (Warning, this is cross-posted widely. One of the lists is the IETF 
> websec mailing list, to which the IETF NOTE WELL applies: 
> http://www.ietf.org/about/note-well.html)
>
>
> Folks,
>
> there appear to be at least three possible specifications addressing this space, with similar but different designs:
>
> 1. A proposed deliverable in the WebAppSec group to take up on X-Frame-Options and express those in CSP:
>  http://www.w3.org/2011/07/appsecwg-charter.html
>
> (We expect that this charter might go to the W3C AC for review as soon 
> as next week.)
>
> 2. The "From-Origin" draft (aka "Cross-Origin Resource Embedding Exclusion") currently considered for publication as an FPWD in the Webapps WG:
>  
> http://lists.w3.org/Archives/Public/public-webapps/2011JulSep/0088.htm
> l
>
> This draft mentions integration into CSP as a possible path forward.
>
> 3. draft-gondrom-frame-options, an individual I-D mentioned to websec:
>  https://datatracker.ietf.org/doc/draft-gondrom-frame-options/
>  http://www.ietf.org/mail-archive/web/websec/current/msg00388.html
>
>
> How do we go about it?  One path forward might be to just proceed as currently planned and coordinate when webappsec starts working.
>
> Another path forward might be to see whether we can agree now on what forum to take these things forward in (and what the coordination dance might look like).
>
> Thoughts welcome.
>
> Regards,
> --
> Thomas Roessler, W3C  <[e-mail]>  (@roessler)
>
>
>
>