ZDI-10-246: Microsoft Excel MSODrawing Improper Exception Handling Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-10-246

November 9, 2010

-- CVE ID:
CVE-2010-3335

-- CVSS:
9, (AV:N/AC:L/Au:N/C:P/I:P/A:C)

-- Affected Vendors:
Microsoft

-- Affected Products:
Microsoft Office Excel

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 10634.
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. 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 frees resources when
parsing a malformed Office Art record. Due to the application not
properly freeing up resources during handling a parsing error, the
application will later access the freed reference 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://www.microsoft.com/technet/security/bulletin/MS10-087.mspx

-- Disclosure Timeline:
2010-06-30 - Vulnerability reported to vendor
2010-11-09 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Anonymous

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