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Date: Tue, 4 Dec 2012 15:48:21 -0700
From: Vincent Danen <>
To: Moritz Muehlenhoff <>
Cc:, Kurt Seifried <>
Subject: Re: CVE request: Dovecot DoS in 2.x (fixed in 2.1.11)

* [2012-12-04 23:01:42 +0100] Moritz Muehlenhoff wrote:

>On Tue, Dec 04, 2012 at 06:12:29PM +0100, Matthias Weckbecker wrote:
>> Hi Kurt, Vincent, vendors, ...
>> Quoting Kurt Seifried <>:
>> >Hash: SHA1
>> >
>> >On 12/03/2012 10:33 AM, Vincent Danen wrote:
>> >>Could a CVE be assigned for the following please?
>> >>
>> >>Dovecot 2.1.11 was released and includes a fix for a crash
>> >>condition when the IMAP server was issued a SEARCH command with
>> >>multiple KEYWORD parameters.  An authenticated remote user could
>> >>use this flaw to crash Dovecot.
>> >>
>> [...]
>> >>
>> >>
>> >>Thanks.
>> >
>> >Please use CVE-2012-5620 for this issue.
>> >
>> We were discussing this issue too at [1] and think that it does only
>> affect the current connection, no subsequent (i.e. new) connections
>> are affected.
>> What's your opinion wrt this?
>> [1]
>Upstream (Timo Sirainen) disputed the issue in the Debian BTS:

Ahhh... yes, Timo is correct.  If you're only DoS'ing your own
connection, I wouldn't consider this a flaw.

I (mistakenly) thought this took down the entire dovecot server.  My

Can we have this CVE rejected or disputed?  As Timo says, it's a
pointless CVE.

Thanks, and sorry about that.

Vincent Danen / Red Hat Security Response Team 

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