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Date: Thu, 29 Jan 2015 13:58:00 -0500
From: Marc Deslauriers <>
Subject: Re: CVE request: xchat/hexchat don't properly verify
 SSL certificates

On 2015-01-29 01:52 PM, Vincent Danen wrote:
> As reported [1]:
> XChat did not verify that the server hostname matched the domain name in the
> subject's Common Name (CN) or subjectAltName field in X.509 certificates. This
> could allow a man-in-the-middle attacker to spoof an SSL server if they had a
> certificate that was valid for any domain name.
> The same code is used in hexchat.
> This was initially reported to hexchat in 2013 [2] and fixed last November [3]. 
> I'm not sure if it should receive a 2013 or a 2014 CVE.  Can one be assigned to
> this?
> Thanks.
> [1]
> [2]
> [3]

Looks like XChat-GNOME is vulnerable also.


Marc Deslauriers
Ubuntu Security Engineer     |
Canonical Ltd.               |

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