oss-security - Re: KMail/KIO POP3 SSL MITM Flaw

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Message-ID: <CACqxkWK2=4-S1PgGC+8rX6oyQ=WosTpmnRVTtGqm6072kTdQgQ@mail.gmail.com>
Date: Sun, 22 Jun 2014 18:54:21 +0100
From: Nick Boyce <nick.boyce@...il.com>
To: oss-security@...ts.openwall.com
Cc: rich@....org
Subject: Re: KMail/KIO POP3 SSL MITM Flaw

On 18 June 2014 21:07, Richard Moore <rich@....org> wrote:

> Title:          KMail/KIO POP3 SSL MITM Flaw
> CVE:            CVE-2014-3494
> Versions:       kdelibs 4.10.95 to 4.13.2
[...]
> The POP3 kioslave used by kmail will accept invalid
> certificates without presenting a dialog to the user due
> a bug that leads to an inability to display the dialog
> combined with an error in the way the result is checked.
[...]
> This flaw allows an active attacker to perform MITM
> attacks against the ioslave which could result in the
> leakage of sensitive data such as the authentication
> details and the contents of emails.

Is there anything you can add as to how long this bug has been in the
codebase ?  In particular, is the Kmail in Debian 'oldstable' systems
affected (squeeze/kdelibs 4.4.5), or that in Debian 'stable' systems
(wheezy/kdelibs 4.8.4) ?

I'm not sure whether to interpret the 'Versions' line in the advisory
as "bug was introduced at kdelibs 4.10.95" - and there is no further
information on the CVE at Mitre [1], or in the Debian bug [2]; there
appears to be no relevant bug at bugs.kde.org (a search for the CVE,
or any of the keywords "kdelibs pop3 ssl kioslave" returns nothing
relevant).

There is an IBM ISS report [3] which implies the bug affects at least
kdelibs 4.6.x ....

[1] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3494
[2] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=752052
[3] http://xforce.iss.net/xforce/xfdb/93875

Thanks,

Nick

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