Re: [http-state] Ticket 6: host-only cookies
Adam Barth <ietf@adambarth.com> Fri, 22 January 2010 19:16 UTC
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From: Adam Barth <ietf@adambarth.com>
Date: Fri, 22 Jan 2010 11:16:05 -0800
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To: Dan Winship <dan.winship@gmail.com>
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Cc: Daniel Stenberg <daniel@haxx.se>, http-state <http-state@ietf.org>
Subject: Re: [http-state] Ticket 6: host-only cookies
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On Fri, Jan 22, 2010 at 11:09 AM, Dan Winship <dan.winship@gmail.com> wrote: > On 01/22/2010 12:49 PM, Adam Barth wrote: >> In this case, we see that every non-IE user agent has decided to >> support host-only cookies. Given the collective market share of these >> user agents, that's strong evidence that the behavior is sufficiently >> interoperable with existing servers. > > In this case the problem isn't whether the client behavior is > interoperable with servers, it's whether the server behavior (of > expecting host-only cookies to actually be treated as host-only) is > interoperable with clients. And more than 50% of the time, it's not. > >> Also, there is a large security >> benefit to implementing host-only cookies. > > But there's a large security FAIL for servers if their security model > assumes that clients will implement host-only cookies, and then it turns > out that some clients don't. And since we already know that some > (/many/most) clients don't, sites that want to be secure have to find > some other way to protect themselves and their users that doesn't depend > on having working host-only cookies. (Because, as recently demonstrated, > hackers can do plenty of damage even if they can only hack IE users. :) Indeed. I think you're arguing that we should warn servers about IE's behavior in the specification directly instead of referring to a second document. I'd be inclined to note this behavior where we explain host-only cookies and again in the security consideration section. Those should be the two most common places folks will look for this kind of information. Adam
- [http-state] Ticket 6: host-only cookies Adam Barth
- Re: [http-state] Ticket 6: host-only cookies Daniel Stenberg
- Re: [http-state] Ticket 6: host-only cookies Dan Winship
- Re: [http-state] Ticket 6: host-only cookies Adam Barth
- Re: [http-state] Ticket 6: host-only cookies Adam Barth
- Re: [http-state] Ticket 6: host-only cookies Dan Winship
- Re: [http-state] Ticket 6: host-only cookies Adam Barth
- Re: [http-state] Ticket 6: host-only cookies Maciej Stachowiak
- Re: [http-state] Ticket 6: host-only cookies Roy T. Fielding
- Re: [http-state] Ticket 6: host-only cookies Adam Barth
- Re: [http-state] Ticket 6: host-only cookies Roy T. Fielding
- Re: [http-state] Ticket 6: host-only cookies Adam Barth
- Re: [http-state] Ticket 6: host-only cookies Bil Corry
- Re: [http-state] Ticket 6: host-only cookies Adam Barth
- Re: [http-state] Ticket 6: host-only cookies Eran Hammer-Lahav
- Re: [http-state] Ticket 6: host-only cookies Julian Reschke
- Re: [http-state] Ticket 6: host-only cookies Bil Corry
- Re: [http-state] Ticket 6: host-only cookies Adam Barth
- Re: [http-state] Ticket 6: host-only cookies Julian Reschke
- Re: [http-state] Ticket 6: host-only cookies Dan Winship
- Re: [http-state] Ticket 6: host-only cookies Lisa Dusseault
- Re: [http-state] Ticket 6: host-only cookies Blake Frantz
- Re: [http-state] Ticket 6: host-only cookies Adam Barth
- Re: [http-state] Ticket 6: host-only cookies Bil Corry
- Re: [http-state] Ticket 6: host-only cookies Adam Barth
- Re: [http-state] Ticket 6: host-only cookies Dave Kristol
- Re: [http-state] Ticket 6: host-only cookies Adam Barth
- Re: [http-state] Ticket 6: host-only cookies Dave Kristol
- Re: [http-state] Ticket 6: host-only cookies Adam Barth
- Re: [http-state] Ticket 6: host-only cookies Bil Corry
- Re: [http-state] Ticket 6: host-only cookies Mark Pauley