The Glider

Severity Rating: Important
Revision Note: V1.1 (February 1, 2012): Added a link to Microsoft Knowledge Base Article 2633171 under Known Issues in the Executive Summary.
Summary: This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if an attacker logs on to an affected system and runs a specially crafted application designed to exploit the vulnerability. An attacker must have valid logon credentials and be able to log on locally to exploit this vulnerability. The vulnerability could not be exploited remotely or by anonymous users.

Severity Rating: Critical
Revision Note: V1.3 (February 1, 2012): Corrected registry keys and installation switches in the deployment tables for Windows Server 2003 and Windows Server 2008, and installation switches in the deployment table for Windows Vista. This is an informational change only. There were no changes to the security update files or detection logic.
Summary: This security update resolves one publicly disclosed vulnerability and three privately reported vulnerabilities in Microsoft .NET Framework. The most severe of these vulnerabilities could allow elevation of privilege if an unauthenticated attacker sends a specially crafted web request to the target site. An attacker who successfully exploited this vulnerability could take any action in the context of an existing account on the ASP.NET site, including executing arbitrary commands. In order to exploit this vulnerability, an attacker must be able to register an account on the ASP.NET site, and must know an existing user name.

Severity Rating: Critical
Revision Note: V1.2 (January 27, 2012): Corrected the aggregate severity rating for the KB2631813 update package in the Affected Software table for all supported editions of Windows XP, Windows Server 2003, Windows Vista, and Windows Server 2008. This is a bulletin change only. There were no changes to the security update files or detection logic. Customers should apply all update packages offered for the software installed on their systems. See the update FAQ for details.
Summary: This security update resolves two privately reported vulnerabilities in Microsoft Windows. The vulnerabilities could allow remote code execution if a user opens a specially crafted media file. An attacker who successfully exploited the vulnerabilities could gain the same user rights as the local user. 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.

Severity Rating: Important
Revision Note: V2.3 (January 24, 2012): Added an entry to the update FAQ to announce a detection change for KB2251481, KB2251487, and KB2251489 to correct an installation issue. This is a detection change only. There were no changes to the security update files. Customers who have already successfully updated their systems do not need to take any action.
Summary: This security update resolves a privately reported vulnerability in Microsoft XML Editor. The vulnerability could allow information disclosure if a user opened a specially crafted Web Service Discovery (.disco) file with one of the affected software listed in this bulletin. Note that this vulnerability would not allow an attacker to execute code or to elevate their user rights directly, but it could be used to produce information that could be used to try to further compromise the affected system.

Severity Rating: Important
Revision Note: V4.2 (January 24, 2012): Added an entry to the update FAQ to announce a detection change for KB2538242, KB2538243, KB2467173, KB2538218, KB2538241, and KB2542054 to correct an installation issue. This is a detection change only. There were no changes to the security update files. Customers who have already successfully updated their systems do not need to take any action.
Summary: This security update resolves a publicly disclosed vulnerability in certain applications built using the Microsoft Foundation Class (MFC) Library. The vulnerability could allow remote code execution if a user opens a legitimate file associated with such an affected application, and the file is located in the same network folder as a specially crafted library file. For an attack to be successful, a user must visit an untrusted remote file system location or WebDAV share and open a document from this location that is then loaded by the affected application.

Severity Rating: Important
Revision Note: V1.1 (January 18, 2012): Added MS10-085 as a bulletin replaced by the KB2585542 update for Windows 7 for 32-bit Systems, Windows 7 for x64-based Systems, Windows Server 2008 R2 for x64-based Systems, and Windows Server 2008 R2 for Itanium-based Systems. This is an informational change only. There were no changes to the detection logic or the update files.
Summary: This security update resolves a publicly disclosed vulnerability in SSL 3.0 and TLS 1.0. This vulnerability affects the protocol itself and is not specific to the Windows operating system. The vulnerability could allow information disclosure if an attacker intercepts encrypted web traffic served from an affected system. TLS 1.1, TLS 1.2, and all cipher suites that do not use CBC mode are not affected.

Severity Rating: Important
Revision Note: V2.1 (January 16, 2012): Added a link to Microsoft Knowledge Base Article 2607664 under Known Issues in the Executive Summary. Also, revised entry in the update FAQ to clarify why the upgrade to AntiXSS Library version 4.2.1 is only available from the Microsoft Download Center.
Summary: This security update resolves one privately reported vulnerability in the Microsoft Anti-Cross Site Scripting (AntiXSS) Library. The vulnerability could allow information disclosure if an attacker passes a malicious script to a website using the sanitization function of the AntiXSS Library. The consequences of the disclosure of that information depends on the nature of the information itself. Note that this vulnerability would not allow an attacker to execute code or to elevate the attacker's user rights directly, but it could be used to produce information that could be used to try to further compromise the affected system. Only sites that use the sanitization module of the AntiXSS Library are affected by this vulnerability.

Severity Rating: Important
Revision Note: V1.2 (January 10, 2012): Announced that this update, MS11-099, enables the protections provided in the Vulnerability in SSL/TLS Could Allow Information Disclosure update, MS12-006, for Internet Explorer. For more information, see the Update FAQ.
Summary: This security update resolves three privately reported vulnerabilities in Internet Explorer. The most severe vulnerability could allow remote code execution if a user opens a legitimate HyperText Markup Language (HTML) file that is located in the same directory as a specially crafted dynamic link library (DLL) file.

Severity Rating: Important
Revision Note: V1.0 (January 10, 2012): Bulletin published.
Summary: This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow remote code execution if a user opens a specially crafted Microsoft Office file containing a malicious embedded ClickOnce application. An attacker who successfully exploited this vulnerability could gain the same user rights as the local user. 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.

Severity Rating: Important
Revision Note: V1.0 (January 10, 2012): Bulletin published.
Summary: This security update resolves one privately reported vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if an attacker successfully exploited this vulnerability. The attacker could then take complete control of the affected system and install programs; view, change, or delete data; or create new accounts with full user rights. Only systems configured with a Chinese, Japanese, or Korean system locale are affected.