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ZDI-11-346 : Microsoft Office 2007 Office Art Shape Record Hierarchy
Parsing Remote Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-11-346
December 13, 2011

- -- CVE ID:
CVE-2011-3413

- -- CVSS:
7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P

- -- Affected Vendors:

Microsoft


Microsoft



- -- Affected Products:

Microsoft Office Excel


Microsoft Office PowerPoint



- -- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 11931.
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

- -- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Microsoft Office 2007. User interaction is
required to exploit this vulnerability in that the target must visit a
malicious page or open a malicious file.

The specific flaw exists within how the application processes a shape
record hierarchy. Due to the application not properly checking the types
of elements within containers, the application will incorrectly modify a
property of the object. This modification can be used to cause memory
corruption of the type which can lead to code execution under the
context of the application.

- -- Vendor Response:

Microsoft has issued an update to correct this vulnerability. More
details can be found at:

http://technet.microsoft.com/en-us/security/bulletin/MS11-094



- -- Disclosure Timeline:
2011-06-29 - Vulnerability reported to vendor
2011-12-13 - Coordinated public release of advisory

- -- Credit:
This vulnerability was discovered by:

* Anonymous



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