Update Report
Name KB2393802
Type Important
Average Threat Rating
Encounters More Info Related Content Alert Me Discuss
Version
Security
Release Date
2/11/2011
Summary
Microsoft Security Bulletin MS11-011 - Vulnerabilities in Windows Kernel Could Allow Elevation of Privilege (2393802)
Details
Executive Summary
This security update resolves one publicly disclosed vulnerability and one privately reported vulnerability in Microsoft Windows. The vulnerabilities could allow elevation of privilege if an attacker logged on locally and ran a specially crafted application. An attacker must have valid logon credentials and be able to log on locally to exploit these vulnerabilities. The vulnerabilities could not be exploited remotely or by anonymous users.

This security update is rated Important for all supported versions of Microsoft Windows. For more information, see the subsection, Affected and Non-Affected Software, in this section.

The security update addresses the vulnerabilities by ensuring that the Windows kernel properly validates user-supplied data before allocating memory. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.

Recommendation. The majority of customers have automatic updating enabled and will not need to take any action because this security update will be downloaded and installed automatically. Customers who have not enabled automatic updating need to check for updates and install this update manually. For information about specific configuration options in automatic updating, see Microsoft Knowledge Base Article 294871.

Notes