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Date: Mon, 06 Sep 2010 20:19:52 +0200
From: Florian Weimer <>
Subject: Re: CVE Request 1, NSS 2, Qt: Doesn't handle wildcards in Common Name properly

* Jan Lieskovsky:

>   1, Network Security Services (NSS) handled wildcard (*) character
>      in the Common Name field of a x509v3 digital certificate.
>      If an attacker is able to get a carefully-crafted certificate,
>      signed by a Certificate Authority trusted by Firefox, the attacker
>      could use the certificate during the man-in-the-middle attack and
>      potentially confuse Firefox into accepting it by mistake. Different
>      vulnerability than CVE-2009-2408.
>      References:
>      [1]
>      [2]

Is this really a _security_ bug?  The CN was not validated by the CA,
so it's the CA's fault (which you have to trust, but still).

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