SAP GUI 6.4 - ActiveX Accept Remote Buffer Overflow PoC

ID EDB-ID:8899
Type exploitdb
Reporter DSecRG
Modified 2009-06-08T00:00:00


SAP GUI 6.4 ActiveX (Accept) Remote Buffer Overflow PoC. Dos exploit for windows platform

                                            Digital Security Research Group [DSecRG] Advisory      #DSECRG-09-015

Original Advisory:

Application:                    SAP GUI for Windows,  EnjoySAP
Versions Affected:              Version 6.4 
Vendor URL:           
Bugs:                           Buffer Overflow
Exploits:                       YES
Reported:                       13.11.2008
Vendor response:                17.11.2008
Date of Public Advisory:        08.06.2009
Author:                         Alexander Polyakov
                                Digital Security Research Group [DSecRG] (research [at] dsec [dot] ru)


SAP GUI for Windows version 6.4 contains ActiveX component SAPIrRfc  which is vulnerable to Buffer overflow attack.    

file = sapirrfc.dll
GUID = F6908F83-ADA6-11D0-87AA-00AA00198702


Attacker can construct html page which will call vulnerable function "Accept" from ActiveX Object SAPIrRfc with long parameter.
When user open this vulnerable page it will occur DOS (Example 1) or full remote control on target system (Example2 execute calc.exe aviable by request) .


<object classid='clsid:77F12F8A-F117-11D0-8CF1-00A0C91D9D87' id='target' />


target.Accept arg1 


Fix Information
The issue has been solved. See SAP note 1286637.

SAP note 1286637


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# [2009-06-08]