Date: 21 November 2007
Click here for printable version
Click here for PGP verifiable version
-----BEGIN PGP SIGNED MESSAGE-----
AUSCERT External Security Bulletin Redistribution
ESB-2007.0942 -- [Win]
Vulnerability Note VU#138633 Invensys Wonderware InTouch
creates insecure NetDDE share
21 November 2007
AusCERT Security Bulletin Summary
Product: Invensys Wonderware InTouch 8.0
Operating System: Windows 2000
Impact: Execute Arbitrary Code/Commands
CVE Names: CVE-2007-6033
- --------------------------BEGIN INCLUDED TEXT--------------------
Vulnerability Note VU#138633
Invensys Wonderware InTouch creates insecure NetDDE share
Invensys Wonderware InTouch 8.0 creates a NetDDE share that could
allow an attacker to run arbitrary programs.
Invensys Wonderware InTouch HMI Software is used in Supervisory
Control And Data Acquisition (SCADA) systems.
Dynamic Data Exchange (DDE) was designed to allow Microsoft
Windows applications to share data. NetDDE is an extension to DDE
that was developed by Wonderware. NetDDE allows communications with
local DDE applications and with remote NetDDE agents using NetBIOS.
NetDDE is not supported in Windows Vista, but is included in Windows
NT, 2000, XP, and Server 2003.
InTouch 8.0 creates a universal NetDDE share. The permissions applied
to the share may allow a remote attacker to execute arbitrary
programs. Windows access permissions apply to NetDDE connections,
however if an attacker can obtain valid credentials, or possibly
if anonymous connections are enabled, the attacker could connect to
the NetDDE share and execute programs.
A remote attacker may be able to execute any application that accepts
This issue has been addressed in Wonderware InTouch version 9 and
later. Wonderware administrators with active support contracts who do
not want to upgrade can get an updated version of Wonderware 8.0.
Wonderware Tech Alert 98 contains information about obtaining
fixed software. Wonderware users that do not have an active support
contract should contact Wonderware for more information about updates.
Per Micrososoft Security Bulletin MS04-031 (which describes an
unrelated NetDDE vulnerability in Windows), blocking the below ports
at perirmeter firewalls can prevent remote NetDDE connections.
* Ports 135/udp, 137/udp, 138/udp, 445/udp, 135/tcp, 139/tcp,
445/tcp, and 593/tcp
* All unsolicited inbound traffic on ports greater than 1024
* Any other specifically configured RPC port
Vendor Status Date Updated
Invensys Vulnerable 19-Nov-2007
This vulnerability was reported by Neutralbit with assistance from
This document was written by Ryan Giobbi.
Date Public 11/19/2007
Date First Published 11/19/2007 10:38:25 AM
Date Last Updated 11/20/2007
Document Revision 21
If you have feedback, comments, or additional information about this
vulnerability, please send us email.
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to email@example.com
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
If you believe that your computer system has been compromised or attacked in
any way, we encourage you to let us know by completing the secure National IT
Incident Reporting Form at:
Australian Computer Emergency Response Team
The University of Queensland
Internet Email: firstname.lastname@example.org
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
-----BEGIN PGP SIGNATURE-----
-----END PGP SIGNATURE-----