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From: Peter Wang <>
To: notmuch mailing list <>
Subject: Re: a DoS vulnerability associated with conflated Message-IDs?
Date: Mon, 29 Oct 2012 22:15:16 +1100	[thread overview]
Message-ID: <20121029221516.GB20292@hili.localdomain> (raw)
In-Reply-To: <>

On Thu, 08 Mar 2012 11:37:09 -0500, Daniel Kahn Gillmor <> wrote:
> notmuch currently treats all messages with the same Message-ID as
> the same message.  I think this could be a vulnerability :(
> If two messages have the same Message-ID, is there a guarantee of which
> of these messages will be produced during a notmuch show?
> Either way, it seems to create a potential DoS attack on notmuch users.

Yesterday I was expecting a confirmation message which, seemingly, never
came.  It turns out my maildir already contained a message from the
same system.  From three years ago.  With the same Message-ID.

Malice has nothing on incompetence.

Could we distinguish messages with identical Message-IDs based on
some header fields, e.g. Date, From?


  parent reply	other threads:[~2012-10-29 11:15 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-08 16:37 a DoS vulnerability associated with conflated Message-IDs? Daniel Kahn Gillmor
2012-03-08 17:04 ` James Vasile
2012-03-08 17:16   ` Daniel Kahn Gillmor
2012-03-08 17:38     ` Jeremy Nickurak
2012-03-10 17:38       ` Tom Prince
2012-10-29 11:15 ` Peter Wang [this message]
2017-08-04 20:42   ` David Bremner
2017-08-04 22:15     ` Daniel Kahn Gillmor
2022-07-30 12:41       ` David Bremner

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