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Re: [Extra] Status of draft-ietf-extra-sieve-fcc

Ken Murchison <murch@fastmail.com> Thu, 10 January 2019 16:44 UTC

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To: extra@ietf.org, Alexey Melnikov <alexey.melnikov@isode.com>
References: <3489d633-6c9f-ccf5-8273-7101bf9fa55f@isode.com>
From: Ken Murchison <murch@fastmail.com>
Organization: FastMail US LLC
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Date: Thu, 10 Jan 2019 11:44:33 -0500
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Subject: Re: [Extra] Status of draft-ietf-extra-sieve-fcc
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On 1/10/19 11:40 AM, Alexey Melnikov wrote:
> Hi,
>
> Based on IESG review, I think the document should have some text about 
> the following security/privacy considerations:
>
> 1) Possible information disclosure from generated messages which are 
> filed to shared folders (as opposed to private folders). I.e. non 
> intended parties might discover that a Sieve script owner is on 
> holidays, owner's location, etc.
>
> 2) FCC can put owner over quota, causing denial of service.
>
> I don't believe we need to come up with any novel solutions to these 
> problems, but we should explain them.


3) Should I revert back to the RFC 5228 "fileinto" text about handling 
non-existent ":fcc" mailbox?

-- 

Ken Murchison
Cyrus Development Team
FastMail US LLC

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