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Re: [lamps] S/MIME fix

Russ Housley <housley@vigilsec.com> Thu, 17 May 2018 13:42 UTC

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From: Russ Housley <housley@vigilsec.com>
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Subject: Re: [lamps] S/MIME fix
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On May 16, 2018, at 1:51 PM, Alexey Melnikov <alexey.melnikov@isode.com> wrote:
> On 16/05/2018 18:35, Jim Schaad wrote:
> 
>> I will note that unless multipart/mixed has some special text associated with it.  Text/html is defined by RFC 1866 to only hold a single HTML document.  Thus building an HTML document from multiple parts is not according to Hoyle.
> Yes, but people do this anyway, as separate HTML body parts are frequently valid HTML documents. So building from pieces works most(*) of the time.
> 
> (*) spam and phishing nonwithstanding.

I do not see a way to totally thwart eFail unless each portion of a multi-part is processed in its own sandbox.

Russ

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