Vulnerability Note VU#291396

Microsoft Windows Media Player vulnerable to buffer overflow in bitmap processing routine

Overview

Microsoft Windows Media Player contains a buffer overflow vulnerability that may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.

I. Description

Microsoft Windows Media Player (WMP) is an application that ships with Microsoft Windows systems used to play various types of media files. Windows Media Player fails to properly validate bitmap image files (.bmp), potentially allowing a buffer overflow to occur.

If the size field in the bitmap header is set to set to a value that is less than the actual size of the file, WMP will allocate an under-sized buffer to hold the bitmap. When data is copied to this buffer, the buffer overflow may occur. For more information, please see Microsoft Security Bulletin MS06-005.

Exploit code for this vulnerability is publicly available.

II. Impact

By persuading a user to open a specially crafted bitmap file with Windows Media Player, an attacker may be able to execute arbitrary code with the privileges of the user.

III. Solution

Apply an Update

Microsoft has addressed this issue in Microsoft Security Bulletin MS06-005.

Please see Microsoft Security Bulletin MS06-005 for a list of workarounds to mitigate this vulnerability.

Systems Affected

Vendor	Status	Date Updated
Microsoft Corporation	Vulnerable	14-Feb-2006

References

http://www.microsoft.com/technet/security/bulletin/ms06-005.mspx
http://support.microsoft.com/kb/912226
http://www.eeye.com/html/research/advisories/AD20060214.html
http://eeye.com/html/company/press/PR20060214.html

Credit

This vulnerability was reported in Microsoft Security Bulletin MS06-005. Microsoft credits Marc Maiffret of eEye Digital Security with providing information regarding this issue.

This document was written by Jeff Gennari.

Other Information

Date Public	02/14/2006
Date First Published	02/14/2006 02:06:56 PM
Date Last Updated	03/17/2006
CERT Advisory
CVE Name	CVE-2006-0006
US-CERT Technical Alerts
Metric	27.00
Document Revision	25

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Produced 2006 by US-CERT, a government organization
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