Vulnerability Note VU#319385

Microsoft Windows Media Format Runtime ASF handling buffer overflow

Original Release date: 12 Dec 2007 | Last revised: 13 Dec 2007


Microsoft Windows Media Format Runtime is vulnerable to a heap-based buffer overflow. This vulnerability may allow a remote, unauthenticated attacker to execute arbitrary code on an vulnerable system.


Microsoft Windows Media Format Runtime is used by various Windows Media applications such as Windows Media Player. The Windows Media Format Runtime includes the ability to play Advanced Systems Format (ASF) files, which can contain streaming audio, video, slide shows and synchronized events. A heap-based buffer overflow exists due to Microsoft Windows Media Format Runtime's improper parsing of ASF files. By successfully persuading a user to access a specially crafted ASF file, a remote, unauthenticated attacker could trigger the buffer overflow.


A remote, unauthenticated attacker could execute arbitrary code on a vulnerable system.


Microsoft has published Microsoft Security Bulletin MS07-068 in response to this issue. Users are strongly encouraged to review this bulletin and apply the referenced patches.

In addition to the patches referenced above, Microsoft has published workarounds for this issue. Users who are unable to apply the patches are strongly encouraged to implement these workarounds as appropriate.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
Microsoft CorporationAffected-12 Dec 2007
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



Microsoft credits Ryan Smith of ISS X-Force for reporting this vulnerability.

This document was written by Joseph W. Pruszynski.

Other Information

  • CVE IDs: CVE-2007-0064
  • Date Public: 11 Dec 2007
  • Date First Published: 12 Dec 2007
  • Date Last Updated: 13 Dec 2007
  • Severity Metric: 14.73
  • Document Revision: 14


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