ZDI-09-019: Microsoft Office PowerPoint OutlineTextRefAtom Parsing Memory Corruption Vulnerability

[ZDI Disclosures <zdi-disclosures@xxxxxxxxxxxxxxxx>]

ZDI-09-019: Microsoft Office PowerPoint OutlineTextRefAtom Parsing Memory
Corruption Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-09-019
May 12, 2009

-- CVE ID:
CVE-2009-0556

-- Affected Vendors:
Microsoft

-- Affected Products:
Microsoft Office PowerPoint

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 6944, 6965.
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. Exploitation
requires that the attacker coerce the target into opening a malicious
.PPT file.

The specific flaw exists in the parsing of the OutlineTextRefAtom
(3998).  By specifying an invalid "index" value during parsing memory
corruption occurs.  Proper exploitation can lead to remote code
execution 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/MS09-017.mspx

-- Disclosure Timeline:
2008-04-07 - Vulnerability reported to vendor
2009-05-12 - Coordinated public release of advisory

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

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