|CVSS SCORE||7.5, (AV:N/AC:L/Au:N/C:P/I:P/A:P)|
|TREND MICRO CUSTOMER PROTECTION||Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11740. For further product information on the TippingPoint IPS: http://www.tippingpoint.com|
The specific flaw exists within mshtml.dll and is a logic bug in the way it handles the 'extra size index' in certain CDispNode classes within the SetExpandedClipRect function. When the 'extra size index' is zero, the code fails to correctly adjust the class instance pointer before and uses the vftable pointer as a flag field. This corrupts the vftable pointer and can lead to remote code execution under the context of the current user. This issue is closely related to CVE-2009-3672.
Microsoft has issued an update to correct this vulnerability. More details can be found at: