Advisory ID: 10132000-01

CVE CAN: None currently assigned.

Title: Multiple Vulnerabilities found in Sonata teleconferencing Application.

Class: Design Error

Remotely Exploitable: Yes

Locally Exploitable: Yes

Vulnerability Description:

Sonata is a teleconfrencing solution developed by Voyant Technologies. This advisory concerns the Sonata application server and bridge componet of the Sonata package.
The application server is an Ultra Sparc 5 running Solaris 2.x as required by Voyant technologies. The bridge is an IBM PC running OS/2 Warp. These hosts are usually
built in house by Voyant personnel and installed at customer locations by a field engineer.

Six vulnerabilities have been found in the application server host and Sonata package, they are categorized below:

1. Reused default user accounts and passwords.
2. Easily guessable passwords.
3. Poor file permissions.
4. Lack of host hardening.
5. X console authentication has been disabled.
6. Hard coded default passwords.

Sonata bridge OS/2 Warp.

Solution/Vendor Information/Workaround:

The vendor is currently working on a solution. See references section for Vendor contact information.

Vendor notified on: 10/13/2000

Credits:

This advisory was drafted with the help of the SecurityFocus.com Vulnerability Help Team. For more information or assistance drafting advisories please mail vulnhelp@securityfocus.com.

Voyant Technologies for responding.

Technical Description - Exploit/Concept Code:

I. Application Server, Solaris 2.x

By using available default services on the host an attacker can enumerate accounts. Using this easily obtainable account information combined with poor password selection and weak file permissions a remote attacker can gain root access. The passwords guessed are the default for _all_ installations of Sonata.

By default xhost authentication is disabled allowing a remote attacker to log key strokes and capture screen shots of the X console.

II. Bridging Server, OS/2 Warp.

These default passwords are also re-used on the bridging host (OS/2). Which has telnet enabled for remote administration.

I am not going to detail the exploit because the methods used to access these systems are only the most basic information gathering techniques one would use to audit a host.

References:

        Sonata product page.
        http://www.voyanttech.com/solutions/sonata/prod_description.php 

        Security Focus website.  
        http://www.securityfocus.com
                                               
        Vapid Labs.
        http://vapid.betteros.org
        Email: Larry W. Cashdollar <lwc@vapid.betteros.org>

The contents of this advisory are copyright (c) 2000 Larry W. Cashdollar and may be distributed freely provided that no fee is charged for this distribution and proper credit is given.

Ver 2.3 10/23/2000