Re: Last Call: <draft-levine-herkula-oneclick-04.txt> (Signalling one-click functionality for list email headers) to Proposed Standard (fwd)

Viktor Dukhovni <ietf-dane@dukhovni.org> Wed, 21 September 2016 00:01 UTC

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Subject: Re: Last Call: <draft-levine-herkula-oneclick-04.txt> (Signalling one-click functionality for list email headers) to Proposed Standard (fwd)
From: Viktor Dukhovni <ietf-dane@dukhovni.org>
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> On Sep 20, 2016, at 7:54 PM, John R. Levine <johnl@iecc.com> wrote:
> 
>> There's a reason why browsers send "Origin:" headers, the MUA should
>> do the same when doing POST requests based on email headers.
> 
> MUAs have been doing GETs and, for messages with forms in them, POSTs
> for over a decade.  What origin headers do they send now?  Why is this
> different?

I take no issue with GETs.  The "Origin:" header is comparatively new,
and AFAIK should be present in all POSTs that are triggered via email
content.

Perhaps some of the MUAs that submit forms (sorry, I don't use any that
do) predate "Origin:".  It may also possible that in this context adding
"Origin" is not a useful cross-origin security measure.  I hope someone
more knowlegeable in HTTP security will chime in.

-- 
-- 
	Viktor.