Secunia Research has discovered a vulnerability in SAP GUI, which can be exploited by malicious people to potentially compromise a user's system. The vulnerability is caused due to a boundary error in the included TabOne ActiveX control (sizerone.ocx) when copying tab captions. This can be exploited to cause a heap-based buffer overflow by e.g. adding multiple tabs via the "AddTab()" method. Successful exploitation may allow execution of arbitrary code. SAP GUI 6.40 Patch 29 and SAP GUI 7.10 are both affected.
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Secunia Research XX/XX/200X
- SAP GUI TabOne ActiveX Control Caption List Buffer Overflow -
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Table of Contents
Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10
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1) Affected Software
* SAP GUI 6.40 Patch 29
* SAP GUI 7.10
NOTE: Other versions may also be affected.
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2) Severity
Rating: Highly critical
Impact: System compromise
Where: Remote
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3) Vendor's Description of Software
"SAP GUI is SAP's universal client for accessing SAP functionality in
SAP applications such as - SAP ERP, SAP Business Suite (SAP CRM, SAP
SCM and SAP PLM), SAP Business Intelligence and so on. SAP GUI
functions like a browser. It gets information from the SAP server like
what, where, when and how, to display contents in its window.".
Product Link:
https://www.sdn.sap.com/irj/sdn/sap-gui
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4) Description of Vulnerability
Secunia Research has discovered a vulnerability in SAP GUI, which
can be exploited by malicious people to potentially compromise a
user's system.
The vulnerability is caused due to a boundary error in the included
TabOne ActiveX control (sizerone.ocx) when copying tab captions. This
can be exploited to cause a heap-based buffer overflow by e.g. adding
multiple tabs via the "AddTab()" method.
Successful exploitation may allow execution of arbitrary code.
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5) Solution
Update to the latest 7.10 PL, which sets the kill-bit for the ActiveX
control.
Users can also set the kill-bit manually by following the procedure
explained in SAP note 1092631.
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6) Time Table
13/11/2008 - Vendor notified.
13/11/2008 - Vendor response.
05/11/2008 - Vendor provides status update and informs that a patch has
been released for 7.10, which sets the kill-bit.
07/01/2009 - Public disclosure.
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7) Credits
Discovered by Carsten Eiram, Secunia Research.
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8) References
The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2008-4827 for the vulnerability.
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9) About Secunia
Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:
http://secunia.com/advisories/business_solutions/
Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private
individuals, who are interested in or concerned about IT-security.
http://secunia.com/advisories/
Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the
security and reliability of software in general:
http://secunia.com/secunia_research/
Secunia regularly hires new skilled team members. Check the URL below
to see currently vacant positions:
http://secunia.com/corporate/jobs/
Secunia offers a FREE mailing list called Secunia Security Advisories:
http://secunia.com/advisories/mailing_lists/
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10) Verification
Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2008-53/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
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