Vulnerability Note VU#675073

Microsoft Windows TrueType font array indexing vulnerability

Overview

A vulnerability in the Microsoft Windows TrueType font parsing component could allow an attacker to cause a denial-of-service condition in Microsoft Windows.

I. Description

The Microsoft Windows kernel includes a driver (win32k.sys) that handles a variety of graphics processing tasks, including the processing of TrueType fonts. A vulnerability exists in the way this driver validates array indexes. This can cause Windows to crash with a "blue screen."

II. Impact

By convincing a user to open a specially-crafted TrueType font file, a remote, unauthenticated attacker could cause a denial-of-service condition.

III. Solution

Apply an update

This issue is addressed in Microsoft Security Bulletin MS11-084.

Vendor Information

Vendor	Status	Date Notified	Date Updated
Microsoft Corporation	Affected	2011-06-13	2011-11-08

References

http://technet.microsoft.com/en-us/security/bulletin/ms11-084

Credit

This vulnerability was reported by Will Dormann of the CERT/CC.

This document was written by Will Dormann.

Other Information

Date Public:	2011-11-08
Date First Published:	2011-11-08
Date Last Updated:	2011-11-08
CERT Advisory:
CVE-ID(s):	CVE-2011-2004
NVD-ID(s):	CVE-2011-2004
US-CERT Technical Alerts:
Severity Metric:	2.92
Document Revision:	7