Vulnerability Note VU#995220

Microsoft DirectShow buffer overflow

Overview

A buffer overflow in Microsoft DirectShow may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.

I. Description

Microsoft DirectShow is a programming architecture for streaming multimedia on the Microsoft Windows platform. An input validation error in the DirectShow architecture may allow a buffer overflow to occur in applications or components that use DirectShow. If a remote, unauthenticated attacker supplies an application or component that uses DirectShow with a specially crafted media file, that attacker may be able to trigger the buffer overflow and, consequently, execute arbitrary code.

For more information, including a list of affected software, please see MS05-050.

II. Impact

By convincing a user to open a specially crafted media file with an application that uses DirectShow, 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 MS05-050.

Do not accept media files from untrusted sources

By only accessing media files, such as *.avi files, from trusted or known sources, the chances of exploitation are reduced.

Systems Affected

Vendor	Status	Date Notified	Date Updated
Microsoft Corporation	Vulnerable	11-Oct-2005

References

http://www.microsoft.com/technet/security/Bulletin/MS05-050.mspx
http://eeye.com/html/research/advisories/AD20051011a.html

Credit

This vulnerability was reported by in Microsoft Security Bulletin MS05-050. Microsoft credits eEye Digital Security for reporting this vulnerability.

This document was written by Jeff Gennari.

Other Information

Date Public:	2005-10-11
Date First Published:	2005-10-11
Date Last Updated:	2005-10-14
CERT Advisory:
CVE-ID(s):	CAN-2005-2128
NVD-ID(s):	CAN-2005-2128
US-CERT Technical Alerts:
Metric:	14.70
Document Revision:	27

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Produced 2005 by US-CERT, a government organization
Disclaimers and copyright information

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