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bugtraq: ZDI-07-046: Microsoft Windows Media Player Skin Parsing

ZDI-07-046: Microsoft Windows Media Player Skin Parsing Size Mismatch Heap Overflow Vulnerability

From: <zdi-disclosures_at_nospam>
Date: Tue Aug 14 2007 - 20:31:15 GMT
To: full-disclosure@lists.grok.org.uk, bugtraq@securityfocus.com, vulnwatch@vulnwatch.org, vulndiscuss@vulnwatch.org


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): Established by TippingPoint, a division of 3Com, The Zero Day Initiative (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. 3Com does not re-sell the vulnerability details or any exploit code. Instead, upon notifying the affected product vendor, 3Com provides its customers with zero day protection through its intrusion prevention 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 helping to secure a broader user base, 3Com provides this vulnerability information confidentially to security vendors (including competitors) who have a vulnerability protection or mitigation product.

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