Vulnerability Note VU#739376

Microsoft Windows Media Player creates URL shortcut that may contain HTML code in known location in Local Computer Zone

Overview

There is a vulnerability in the creation of Internet shortcuts in Windows Media Player version 6.4 and 7. This vulnerability may allow attackers to execute arbitrary commands when a victim views a malicious web page.

I. Description

Windows Media Player versions 6.4 and 7 create Internet shortcuts in a known location in the user's temporary files folder. Because local files are presumed to be trusted, applications should not allow remote attackers to create files in known locations.

II. Impact

When a victim views a malicious web page, an attacker could create a local file with a predictable name in the user's temporary files folder. If the attacker chooses to embed script commands in this file, these commands will be executed in the "My Computer" zone when the file is opened in Internet Explorer. This will allow the remote intruder to execute arbitrary commands as the user viewing the web page.

III. Solution

Apply a Patch

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

http://www.microsoft.com/technet/security/bulletin/MS01-029.asp

Systems Affected

Vendor	Status	Date Updated
Microsoft Corporation	Vulnerable	16-Jul-2002

References

http://www.microsoft.com/technet/security/bulletin/MS01-029.asp
http://www.securityfocus.com/bid/2765

Credit

This document was written by Cory F. Cohen.

Other Information

Date Public	05/23/2001
Date First Published	09/27/2002 01:42:07 PM
Date Last Updated	09/27/2002
CERT Advisory
CVE-ID(s)	CAN-2001-0243
NVD-ID(s)	CAN-2001-0243
US-CERT Technical Alerts
Metric	9.58
Document Revision	11

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