Hash: SHA1

             AUSCERT External Security Bulletin Redistribution

                          ESB-2007.0697 -- [Win]
                 Autodesk Backburner 3.0.2 System Backdoor
                             13 September 2007


        AusCERT Security Bulletin Summary

Product:              Autodesk Backburner 3.0.2
Publisher:            Symantec
Operating System:     Windows
Impact:               Administrator Compromise
Access:               Remote/Unauthenticated
CVE Names:            CVE-2007-4749

Original Bulletin:    

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Hash: SHA1

                   Symantec Consulting Services
                        Security Advisory

   Advisory ID: SYMSA-2007-008
Advisory Title: Autodesk Backburner 3.0.2 : System Backdoor
        Author: Dave Hartley and Stephen Kapp
  Release Date: 12-09-2007
   Application: Autodesk Backburner 3.0.2
      Platform: Windows
      Severity: Remotely exploitable
 Vendor status: Verified by vendor - Workaround Suggested - No Patch
    CVE Number: CVE-2007-4749
     Reference: http://www.securityfocus.com/bid/25590


Autodesk Backburner is a facility wide network render manager for
3ds Max, Combustion, Inferno, Flame, Flint, Fire, Smoke, and Lustre.
Backburner provides a flexible, centralized solution for tracking
and prioritizing background render requests sent by multiple client
applications before sending them to available render nodes for



The Autodesk Backburner software remote job queueing tool allows
users to submit jobs consisting of operating system commands that
will be executed by the Backburner Manager service on the render
server(s) without authentication.

The commands are executed with the privileges of the user account
that started the Manager service on the remote server. Backburner is
designed to be used by administrators on a closed network, the
applications that use Backburner require partial administrative
permissions therfore the service runs with administrative
privileges. A malicous attacker could leverage this functionality
to gain remote administrative control over the host running the
Backburner software

The default behavior for the tool is to search for available servers
on the network. The Backburner Manager Server Service listens by
default on tcp port 3234 for incoming jobs and responds to broadcast
discover requests by default on udp port 3234.

The software can be downloaded for free from the vendors site:

Vendor Response:

"The backburner package is intended to be used in a closed network
i.e. one that does not have routing between its hosts and the rest
of the world. If a customer decides that he cannot do without
Internet connectivity, he should take the appropriate measures to
limit traffic on its subnet so that machines make use of a proxy
to access the Internet, to the very least.

The cmdjob  utility is well documented in the Backburner 2007.1
user’s guide. As well, a notice documents the security issue it
could represent for hosts using it on page 43 of the same guide.

By default, the cmdjob  utility is installed on the system. A user
can remove the cmdjob utility from his system if he does not wish
to submit jobs automatically. This should not affect the rest of
the Autodesk software infrastructure he already is using."


Remove the cmdjob functionality.  Alternatively, limit network
access to the specific ports to only those hosts that require it.

Common Vulnerabilities and Exposures (CVE) Information:

The Common Vulnerabilities and Exposures (CVE) project has assigned the
following names to these issues.  These are candidates for inclusion in
the CVE list (http://cve.mitre.org), which standardizes names for security


- - -------Symantec Consulting Services Advisory Information-------

For questions about this advisory, or to report an error:

For details on Symantec's Vulnerability Reporting Policy:

Consulting Services Advisory Archive:

Consulting Services Advisory PGP Key:

- - -------------Symantec Product Advisory Information-------------

To Report a Security Vulnerability in a Symantec Product:

For general information on Symantec's Product Vulnerability reporting and response:

Symantec Product Advisory Archive:

Symantec Product Advisory PGP Key:

- - ---------------------------------------------------------------

Copyright (c) 2007 by Symantec Corp.
Permission to redistribute this alert electronically is granted as
long as it is not edited in any way unless authorized by Symantec
Consulting Services. Reprinting the whole or part of this alert in
any medium other than electronically requires permission from

The information in the advisory is believed to be accurate at the
time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS
condition. There are no warranties with regard to this information.
Neither the author nor the publisher accepts any liability for any
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Symantec, Symantec products, and Symantec Consulting Services are
registered trademarks of Symantec Corp. and/or affiliated companies
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unregistered trademarks represented in this document are the sole
property of their respective companies/owners.
Version: GnuPG v1.4.7 (MingW32)


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