[DSECRG-09-015] SAP GUI 6.4 Buffer Overflow vulnerability

Type securityvulns
Reporter Securityvulns
Modified 2009-06-08T00:00:00


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

Original Advisory: http://dsecrg.com/pages/vul/show.php?id=115

Application: SAP GUI for Windows, EnjoySAP Versions Affected: Version 6.4 Vendor URL: http://SAP.com Bugs: Buffer Overflow Exploits: YES Reported: 13.11.2008 Vendor response: 17.11.2008 Date of Public Advisory: 08.06.2009 CVE-number:
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) .


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


target.Accept arg1

</script> </html>

Fix Information

The issue has been solved. See SAP note 1286637.


SAP note 1286637

https://service.sap.com/sap/support/notes/1286637 http://dsecrg.com/pages/vul/show.php?id=115


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

Regards, Alexander Polyakov Digital Security Research Group [DSecRG]

DIGITAL SECURITY tel/fax: +7(812)703-1547 tel: +7(812)430-9130 e-mail: research@dsecrg.com web: www.dsecrg.com

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