Microsoft KB Archive/321676

= MS02-032: Patch Available for WMP Active Playlist Vulnerability =

Article ID: 321676

Article Last Modified on 2/22/2007

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APPLIES TO


 * Microsoft Windows Media Player 8.01
 * Microsoft Windows Media Player 8.01

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This article was previously published under Q321676



SYMPTOMS
The Windows Media Player Active Playlist vulnerability is a local script execution vulnerability. An attacker who can successfully exploit this vulnerability can cause HTML scripts to run as if they were run locally on the user's computer. The scripts can take any action that the user was can take, including adding, changing or deleting files or changing security settings.

This particular vulnerability is subject to a significant mitigating factor. A successful attack requires that the following specific series of actions occur in an exact order, or the attack does not work:
 * 1) You must play a specially-formed media file from an attacker.
 * 2) After you play the file, you must quit Windows Media Player without playing another file.
 * 3) You must then view a Web page that was constructed by the attacker.



CAUSE
The vulnerability results because of a flaw in how the Windows Media active playlist information is stored on the local computer. Specifically, the playlist is stored in a fixed, known location.



RESOLUTION
The update for this problem is included in the Windows Media Player rollup package that is referenced in the following article in the Microsoft Knowledge Base:

320920 MS02-032: Windows Media Player Rollup Available



STATUS
Microsoft has confirmed that this problem may cause a degree of security vulnerability in the versions of Windows Media Player that are listed earlier in this article.

Additional query words: security_patch wmp

Keywords: kbbug kbfix kbsecvulnerability kbqfe kbenv kbsecurity kbsecbulletin kbsechack kbwinxpsp1fix KB321676

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