Vulnerability Note VU#675073

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.

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."

Impact

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

Solution

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

Vendor Information (Learn More)

Vendor	Status	Date Notified	Date Updated
Microsoft Corporation	Affected	13 Jun 2011	08 Nov 2011

If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group	Score	Vector
Base	7.1	AV:N/AC:M/Au:N/C:N/I:N/A:C
Temporal	6.2	E:ND/RL:OF/RC:C
Environmental	6.2	CDP:ND/TD:ND/CR:ND/IR:ND/AR:ND

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

• CVE IDs: CVE-2011-2004
• Date Public: 08 Nov 2011
• Date First Published: 08 Nov 2011
• Date Last Updated: 28 Mar 2012
• Severity Metric: 2.92
• Document Revision: 10