oss-security - CVE Request -- aMSN -- improper SSL certificate validation (MITM)

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Date: Wed, 10 Mar 2010 17:15:04 +0100
From: Jan Lieskovsky <jlieskov@...hat.com>
To: "Steven M. Christey" <coley@...us.mitre.org>
CC: oss-security <oss-security@...ts.openwall.com>,
        "Alvaro J. Iradier Muro" <airadier@...rs.sourceforge.net>
Subject: CVE Request -- aMSN -- improper SSL certificate validation (MITM)

Hi Steve, vendors,

   Gabriel Menezes Nunes reported:
     [1] http://seclists.org/bugtraq/2009/Jun/239

   a deficiency in the way aMSN messenger validated SSL certificates when
   connecting to the MSN server. A remote attacker could conduct man-in-the-middle
   attacks and / or impersonate trusted servers.

   Affected version:
     Issue originally reported against aMSN v0.97.2, but further research showed [4]
     latest aMSN v0.98.3 still suffers from the flaw.

   References:
     [2] http://www.juniper.net/security/auto/vulnerabilities/vuln35507.html
     [3] http://secunia.com/advisories/35621/
     [4] http://www.opensource-archive.org/showthread.php?p=183821
     [5] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=572818

   Upstream (testing) patch:
     [6] http://amsn.svn.sourceforge.net/viewvc/amsn/trunk/?view=log&pathrev=11991

Not sure, if this already got a CVE id, but in case if not, could you allocate one?

Thanks && Regards, Jan.
--
Jan iankko Lieskovsky / Red Hat Security Response Team

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