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TPTI-10-02: Microsoft Office PowerPoint Viewer TextCharsAtom Record Code Execution Vulnerability
From: ZDI Disclosures <zdi-disclosures () tippingpoint com>
Date: Tue, 9 Feb 2010 14:10:30 -0600

TPTI-10-02: Microsoft Office PowerPoint Viewer TextCharsAtom Record Code Execution Vulnerability
http://dvlabs.tippingpoint.com/advisory/TPTI-10-02
February 9, 2010

-- CVE ID:
CVE-2010-0034

-- Affected Vendors:
Microsoft

-- Affected Products:
Microsoft Office PowerPoint Viewer

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 9439. 
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 PowerPoint Viewer. User
interaction is required to exploit this vulnerability in that the target
must open a malicious PowerPoint PPT file.

The specific flaw exists in the handling of TextCharsAtom (0x0fa0)
records contained in a PPT file. Due to the lack of bounds checking on
the size argument an unchecked memcpy copies user-supplied data from the
file to the stack, overflowing key exception structures. Exploitation of
this vulnerability can lead to remote compromise of the affected system
under the credentials of the currently logged in user.

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

http://www.microsoft.com/technet/security/Bulletin/MS10-004.mspx

-- Disclosure Timeline:
2009-10-29 - Vulnerability reported to vendor
2010-02-09 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Cody Pierce, TippingPoint DVLabs

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