Advisory Details

August 11th, 2009

Microsoft Office OWC10.Spreadsheet ActiveX BorderAround() Heap Corruption Vulnerability

ZDI-09-056
ZDI-CAN-273

CVE ID CVE-2009-2496
CVSS SCORE
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Office Word
Office Excel
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 8298. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS

This vulnerability allows attackers to execute arbitrary code on vulnerable installations of Microsoft Office. User interaction is required to exploit this vulnerability in that the target must visit a malicious page.

The specific vulnerability exists in the OWC10.Spreadsheet.10 ActiveX control installed by Microsoft Office. By accessing specific methods in a certain order heap corruption occurs leading to remote code execution. If exploited, complete control of the affected system can be achieved under the rights of the currently logged in user.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
http://www.microsoft.com/technet/security/bulletin/MS09-043.mspx
DISCLOSURE TIMELINE
  • 2007-12-11 - Vulnerability reported to vendor
  • 2009-08-11 - Coordinated public release of advisory
CREDIT Peter Vreugdenhil
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