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Microsoft Windows Media Player buffer overflow in Active Stream Redirector (.asx) file parser

Vulnerability Note VU#187528

Original Release Date: 2002-09-27 | Last Revised: 2002-09-27


There is a buffer overflow in the parsing of Active Stream Redirector (.ASX) files. This buffer overflow may allow a remote attacker to execute arbitrary code when a user views a malicious web page.


There is a buffer overflow in the processing of Active Stream Redirector (.ASX) files in Windows Media Player version 6.4 and 7. An Active Stream Redirector is a file type used by Windows Media Player to determine where a media stream can be found on the Internet, and how to play it.

This vulnerability is a variant of the vulnerability described in VU#675320 and MS00-090.


An attacker may be able to execute arbitrary code on vulnerable systems when the user visits a web page.


Apply a Patch

Microsoft has published patches correcting this vulnerability. The patches are listed in their advisory at:

Vendor Information


Microsoft Corporation Affected

Updated:  July 16, 2002



Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.


Microsoft has published a security bulletin describing this vulnerability at:

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This document was written by Cory F. Cohen.

Other Information

CVE IDs: CVE-2001-0242
Severity Metric: 4.43
Date Public: 2001-05-23
Date First Published: 2002-09-27
Date Last Updated: 2002-09-27 17:47 UTC
Document Revision: 7

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