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Category:   Application (Generic)  >   Siemens SIMATIC WinCC Vendors:   Siemens
Siemens SIMATIC WinCC Memory Corruption Error in Tag Simulator Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1025751
SecurityTracker URL:  http://securitytracker.com/id/1025751
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Jul 7 2011
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2004, 2005, 2005 SP1, 2007, 2008, 2008 SP1, 2008 SP2
Description:   A vulnerability was reported in Siemens SIMATIC WinCC. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create a specially crafted WinCC file that, when loaded by the target user, will trigger a memory corruption or null pointer error in the Tag Simulator and execute arbitrary code on the target system. The code will run with the privileges of the target user.

The following versions are affected:

ProTool 6.0 SP3 (phased-out)
WinCC flexible 2004 (phased-out)
WinCC flexible 2005 (phased-out)
WinCC flexible 2005 SP1
WinCC flexible 2007
WinCC flexible 2008
WinCC flexible 2008 SP1
WinCC flexible 2008 SP2

Billy Rios and Terry McCorkle reported these vulnerabilities.

Impact:   A remote user can create a file that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   The vendor has issued a fix, available at:

http://support.automation.siemens.com/WW/view/de/50182361

The vendor's advisory is available at:

http://support.automation.siemens.com/WW/llisapi.dll/csfetch/50182361/Siemens_Security_Advisory_SSA-170396.pdf?func=cslib.csFetch&nodeid=50368023

Vendor URL:  support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&lang=en&objid=50182361 (Links to External Site)
Cause:   Access control error
Underlying OS:  Windows (Any)

Message History:   None.


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