Microsoft Knowledge Base Article 970927 documents the currently known issues that customers may experience when installing this security update. See also the section, Detection and Deployment Tools and Guidance, later in this bulletin.
For information about specific configuration options in automatic updating, see Microsoft Knowledge Base Article 294871.įor administrators and enterprise installations, or end users who want to install this security update manually, Microsoft recommends that customers apply the update immediately using update management software, or by checking for updates using the Microsoft Update service. Customers who have not enabled automatic updating need to check for updates and install this update manually. 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. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information. The security update addresses the vulnerabilities by changing the way the Remote Desktop Connection deals with unexpected parameters sent by the RDP server and by correctly validating parameters passed to the Remote Desktop Connection ActiveX control methods. For more information, see the subsection, Affected and Non-Affected Software, in this section.
This security update is rated Important for RDP Version 6.0 that administrators can manually install on Windows Server 2003 Service Pack 2 and Windows Server 2003 圆4 Edition Service Pack 2 and is rated Critical for all other versions of RDP that administrators can manually install on supported Windows editions. This security update is rated Important for default versions of RDP on supported editions of Windows Vista, Windows Vista for 圆4-based Systems, and Remote Desktop Connection Client for Mac 2.0 and is rated Critical for default versions of RDP on all other supported Windows editions. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.
The vulnerabilities could allow remote code execution if an attacker successfully convinced a user of Terminal Services to connect to a malicious RDP server or if a user visits a specially crafted Web site that exploits this vulnerability. This security update resolves two privately reported vulnerabilities in Microsoft Remote Desktop Connection. Version: 2.1 General Information Executive Summary Published: Aug| Updated: November 04, 2009 Security Bulletin Microsoft Security Bulletin MS09-044 - Critical Vulnerabilities in Remote Desktop Connection Could Allow Remote Code Execution (970927)