oss-security - Re: CVE-2008-id Request -- ssmtp -- standardise() -- Buffer overflow

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Message-ID: <1310820388.1556281280172558128.JavaMail.root@zmail01.collab.prod.int.phx2.redhat.com>
Date: Mon, 26 Jul 2010 15:29:18 -0400 (EDT)
From: Josh Bressers <bressers@...hat.com>
To: oss-security@...ts.openwall.com
Cc: "Steven M. Christey" <coley@...us.mitre.org>
Subject: Re: CVE-2008-id Request -- ssmtp -- standardise() --
 Buffer overflow

Hi Steve,

I'm going to leave this one for you, I have no 2008 IDs.

Thanks.

-- 
    JB


----- "Jan Lieskovsky" <jlieskov@...hat.com> wrote:

> Hi Steve, vendors,
> 
>    Brendan Boerner reported:
>    [1] https://bugs.launchpad.net/ubuntu/+source/ssmtp/+bug/282424
> 
> a deficiency in the way ssmtp removed trailing '\n' sequence
> by processing lines beginning with a leading dot. A local user,
> could send a specially-crafted e-mail message via ssmtp send-only
> sendmail emulator, leading to ssmtp executable denial of service (exit
> with:
> ssmtp: standardise() -- Buffer overflow). Different vulnerability
> than CVE-2008-3962.
> 
> References:
>    [2] https://bugzilla.redhat.com/show_bug.cgi?id=582236
>    [3] https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2008-3962
>    [4] http://patch-tracker.debian.org/package/ssmtp/2.62-3
>    [5]
> http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041012.html
>    [6]
> http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041009.html
>    [7]
> http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041119.html
> 
> Debian Linux distribution patch:
>    [8]
> http://patch-tracker.debian.org/patch/series/view/ssmtp/2.62-3/345780-standardise-bufsize
> 
> Public PoC (from
> https://bugzilla.redhat.com/show_bug.cgi?id=582236#c0):
>    [9] ( 0. Install & configure ssmtp, of course )
>          1. (echo -n . ; for i in {1..2050} ; do echo -n $i ; done) |
> mail root
> 
> Couldn't find CVE-2008-XXXX ssmtp identifier for this
> (http://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=ssmtp).
> 
> Steve, could you allocate one?
> 
> Thanks && Regards, Jan.
> --
> Jan iankko Lieskovsky / Red Hat Security Response Team

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