Application: SAP GUI VSFlexGrid.VSFlexGridL (Part of SAP GUI, SAP BO 2005, SAP BO 2007 ) Versions Affected: SAP GUI VSFlexGrid Activex Control sp<=14 Vendor URL: http://SAP.com Bugs: Buffer Overflovw Exploits: YES Reported: 26.11.2008 Vendor response: 27.11.208 Public Advisory: 06.10.2009 Originaly found by: Elazar Broad Author: Alexander Polyakov from Digital Security Research Group [DSecRG] Description *********** Component VSFlexGrid vulnerable to Buffer Overflow which was published in 2007 and not patched in SAPGUI untill this moment. This component and included in default SAPGUI installation. Details ******* Information about this vulnerability in public since 2007 (http://www.securityfocus.com/bid/26467/info) We found that wulnerable component VSFlexGrid is still not patched and is using in default SAP GUI Client installations Tested on: SAP Business One 2007 Client SAP Business One 2005 Client SAP GUI 7.10 (7100.2.7.1038) So every SAP client is vulnerable to remote buffer overflow. Attacker can construct html page which call vulnerable function "Acrchive" from ActiveX Object VSFlex7L with long parameter "ArcFileName". ActiveX component: VSFlexGrid path: c:\program files\sap\frontend\sapgui\vsflex7l.ocx object classid: C0A63B86-4B21-11D3-BD95-D426EF2C7949 prototype = "Sub Archive ( ByVal ArcFileName As String , ByVal FileName As String , ByVal Action As ArchiveSettings )" memberName = "Archive" progid = "VSFlex7L.VSFlexGrid" argCount = 3 Example ******* from Fix Information *************** SAP have two different SAP notes to address this issue: FOR SAP Business One Client The security issue is addressed with SAP note 1327004 (patch was released on July 8, 2009) For SAP GUI The security issue is addressed with SAP note 1092631 (patch was released on July 25, 2008) References ********** http://dsecrg.com/pages/vul/show.php?id=117 https://service.sap.com/sap/support/notes/1327004 https://service.sap.com/sap/support/notes/1092631 http://www.securityfocus.com/bid/26467/info About ***** Digital Security is one of the leading IT security companies in CEMEA, 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 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 Regards, 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 ---------------------------------------- This message and any attachment are confidential and may be privileged or otherwise protected from disclosure. If you are not the intended recipient any use, distribution, copying or disclosure is strictly prohibited. If you have received this message in error, please notify the sender immediately either by telephone or by e-mail and delete this message and any attachment from your system. Correspondence via e-mail is for information purposes only. Digital Security neither makes nor accepts legally binding statements by e-mail unless otherwise agreed. ----------------------------------------