bugtraq - Serena Dimensions CM Desktop Client does not validate the server SSL certificate

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Message-Id: <200905220757.n4M7v9WY032485@www3.securityfocus.com>
Date: Fri, 22 May 2009 01:57:09 -0600
From: roland.gruber.extern@...creditgroup.eu
To: bugtraq@...urityfocus.com
Subject: Serena Dimensions CM Desktop Client does not validate the server
 SSL certificate

Application: Serena Dimensions CM
Affected versions: 10.1 and later
Vulnerability: man-in-the-middle attacks
Problem type: remote

Problem description:
====================

The client/server connection can be SSL encrypted by setting "-ssl" in the listener.dat. The problem is that the Desktop client accepts any server certificates. They may be self signed or signed by a CA. But there is no user interaction required to accept the certificate. There is also no possibility to configure trusted certificates.

The vulnerability allows a man-in-the-middle attack where the attacker can read and modify the data betweeen client and server. This requires to modify the network traffic between client and server.

Resolution:
===========

There is currently no patch available for this problem.