ZDI-07-046: Microsoft Windows Media Player Skin Parsing Size Mismatch
            Heap Overflow Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-07-046.html
August 14, 2007

-- CVE ID:
CVE-2007-3037

-- Affected Vendor:
Microsoft

-- Affected Products:
Windows Media Player 7.1
Windows Media Player 9
Windows Media Player 10
Windows Media Player 11

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability since August 14, 2007 by Digital Vaccine protection
filter ID 5535. For further product information on the TippingPoint IPS:

    http://www.tippingpoint.com 

-- Vulnerability Details:
This vulnerability allows attackers to execute arbitrary code on
vulnerable installations of Microsoft Windows Media Player. 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 during the parsing of malformed skin files
(WMZ). A size compressed / decompressed size mismatch can result in an
under allocated heap buffer which can be leveraged by an attacker to
eventually execute arbitrary code under the context of the current
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/MS07-047.mspx

-- Disclosure Timeline:
2007.03.19 - Vulnerability reported to vendor
2007.08.14 - Digital Vaccine released to TippingPoint customers
2007.08.14 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by Piotr Bania.

-- About the Zero Day Initiative (ZDI):
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(ZDI) represents a best-of-breed model for rewarding security
researchers for responsibly disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:

    http://www.zerodayinitiative.com

The ZDI is unique in how the acquired vulnerability information is used.
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technology. Explicit details regarding the specifics of the
vulnerability are not exposed to any parties until an official vendor
patch is publicly available. Furthermore, with the altruistic aim of
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who have a vulnerability protection or mitigation product.


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