ALERT - February 2011 Microsoft Security Bulletin Release

What is the purpose of this alert?

MS11-003

Cumulative Security Update for Internet Explorer (2482017)

CRITICAL

Remote Code Execution

Requires restart

Microsoft Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2.

MS11-004

Vulnerability in Internet Information Services (IIS) FTP Service Could Allow Remote Code Execution (2489256)

IMPORTANT

Remote Code Execution

May require restart

Microsoft Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2.

MS11-005

Vulnerability in Active Directory Could Allow Denial of Service (2478953)

IMPORTANT

Denial of Service

Requires restart

Microsoft Windows Server 2003

MS11-006

Vulnerability in Windows Shell Graphics Processing Could Allow Remote Code Execution (2483185)

CRITICAL

Remote Code Execution

Requires restart

Microsoft Windows XP, Windows Server 2003, Windows Vista, and Windows Server 2008.

MS11-007

Vulnerability in the OpenType Compact Font Format (CFF) Driver Could Allow Remote Code Execution (2485376)

CRITICAL

Remote Code Execution

Requires restart

Microsoft Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2.

MS11-008

Vulnerabilities in Microsoft Visio Could Allow Remote Code Execution (2451879)

IMPORTANT

Remote Code Execution

May require restart

Microsoft Visio 2002, Visio 2003, and Visio 2007.

MS11-009

Vulnerability in JScript and VBScript Scripting Engines Could Allow Information Disclosure (2475792)

IMPORTANT

Information Disclosure

May require restart

Microsoft Windows 7 and Windows Server 2008 R2.

MS11-010

Vulnerability in Windows  Client/Server Run-time Subsystem Could Allow Elevation of Privilege (2476687)

IMPORTANT

Elevation of Privilege

Requires restart

Microsoft Windows XP and Windows Server 2003.

MS11-011

Vulnerabilities in Windows  Kernel Could Allow Elevation of Privilege (2393802)

IMPORTANT

Elevation of Privilege

Requires restart

Microsoft Windows XP,  Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2.

MS11-012

Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (2479628)

IMPORTANT

Elevation of Privilege

Requires restart

Microsoft Windows XP,  Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2.

MS11-013

Vulnerabilities in Kerberos Could Allow Elevation of Privilege (2496930)

IMPORTANT

Elevation of Privilege

Requires restart

Microsoft Windows XP, Windows Server 2003,  Windows 7, and Windows Server 2008 R2.

MS11-014

Vulnerability in Local Security Authority Subsystem Service Could Allow Local Elevation of Privilege (2478960)

IMPORTANT

Elevation of Privilege

Requires restart

Microsoft Windows XP and Windows Server 2003.

Bulletin Title

Cumulative Security Update for Internet Explorer (2482017)

Executive Summary

This security update resolves two privately reported vulnerabilities and two publicly disclosed vulnerabilities in Internet Explorer. The vulnerabilities could allow remote code execution if a user views a specially crafted webpage using Internet Explorer or if a user opens a legitimate HTML file that loads a specially crafted library file. An attacker who successfully exploited any of these vulnerabilities could gain the same user rights as the local user.

The security update addresses the vulnerabilities by modifying the way that Internet Explorer handles objects in memory, handles Cascading Style Sheets, and loads external libraries. This security update also addresses the vulnerability first described in Microsoft Security Advisory 2488013.

Severity Ratings and Affected Software

This security update is rated CRITICAL for Internet Explorer 6, Internet Explorer 7, and Internet Explorer 8 on Windows clients; and MODERATE for Internet Explorer 6, Internet Explorer 7, and Internet Explorer 8 on Windows servers.

Attack Vectors

·         A maliciously crafted webpage.

·         A maliciously crafted HTML email.

Mitigating Factors

·         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.

·         Users would have to be persuaded to visit a malicious website.

·         Exploitation only gains the same user rights as the logged-on account.

·         By default, all versions of Outlook, Outlook Express, and Windows Mail open HTML email messages in the Restricted Sites zone.

·         By default, IE on Windows 2003 and Windows Server 2008 runs in a restricted mode.

·         SMB is commonly disabled on the perimeter firewall for CVE-2011-0038.

·         Exploitation only gains the same user rights as the logged-on account for CVE-2011-0038.

Restart Requirement

This update requires a restart.

Bulletins Replaced by This Update

MS10-090

Full Details

http://www.microsoft.com/technet/security/bulletin/MS11-003.mspx

Bulletin Title

Vulnerability in Internet Information Services (IIS) FTP Service Could Allow Remote Code Execution (2489256)

Executive Summary

This security update resolves a publicly disclosed vulnerability in Microsoft Internet Information Services (IIS) FTP Service. The vulnerability could allow remote code execution if an FTP server receives a specially crafted FTP command.

The security update addresses the vulnerability by modifying the way that the IIS FTP Service handles specially crafted FTP commands.

Severity Ratings and Affected Software

This security update is rated IMPORTANT for Microsoft FTP Service 7.0 for IIS 7.0 and Microsoft FTP Service 7.5 for IIS 7.0 when installed on all supported editions of Windows Vista and Windows Server 2008, and for Microsoft FTP Service 7.5 for Internet Information Services 7.5 on all supported editions of Windows 7 and Windows Server 2008 R2.

Attack Vectors

·         Maliciously crafted FTP commands.

Mitigating Factors

·         FTP Service is not installed by default.

Restart Requirement

This update requires a restart.

Bulletins Replaced by This Update

None

Full Details

http://www.microsoft.com/technet/security/bulletin/MS11-004.mspx

Bulletin Title

Vulnerability in Active Directory Could Allow Denial of Service (2478953)

Executive Summary

This security update resolves a publicly disclosed vulnerability in Active Directory. The vulnerability could allow denial of service if an attacker sent a specially crafted packet to an affected Active Directory server.

The security update addresses the vulnerability by correcting the way that the Active Directory server handles service principal name (SPN) update requests.

Severity Ratings and Affected Software

This security update is rated IMPORTANT for Active Directory on all supported editions of Windows Server 2003.

Attack Vectors

·         Maliciously crafted network packets.

Mitigating Factors

·         The attacker must have valid local administrator privileges on the domain-joined computer in order to exploit this vulnerability.

Restart Requirement

This update requires a restart.

Bulletins Replaced by This Update

MS10-068 and MS10-101.

Full Details

http://www.microsoft.com/technet/security/bulletin/MS11-005.mspx

Bulletin Title

Vulnerability in Windows Shell Graphics Processing Could Allow Remote Code Execution (2483185)

Executive Summary

This security update resolves a publicly disclosed vulnerability in the Windows Shell graphics processor. The vulnerability could allow remote code execution if a user views a specially crafted thumbnail image. An attacker who successfully exploited this vulnerability could gain the same user rights as the logged-on user.

The security update addresses the vulnerability by correcting the manner in which the Windows Shell graphics processor parses thumbnail images.

Severity Ratings and Affected Software

This security update is rated CRITICAL for all supported editions of Windows XP, Windows Server 2003, Windows Vista, and Windows Server 2008.

NOTE:  All supported editions of Windows 7 and Windows Server 2008 R2 are NOT AFFECTED by the vulnerability.

Attack Vectors

·         A maliciously crafted thumbnail image.

·         A maliciously crafted file share or WebDAV location.

Mitigating Factors

·         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.

·         Cannot be exploited automatically through email.

·         Exploitation only gains the same user rights as the logged-on account.

Restart Requirement

This update requires a restart.

Bulletins Replaced by This Update

MS10-046

Full Details

http://www.microsoft.com/technet/security/bulletin/MS11-006.mspx

Bulletin Title

Vulnerability in the OpenType Compact Font Format (CFF) Driver Could Allow Remote Code Execution (2485376)

Executive Summary

This security update resolves a privately reported vulnerability in the Windows OpenType Compact Font Format (CFF) driver. The vulnerability could allow remote code execution if a user views content rendered in a specially crafted CFF font.

The security update addresses the vulnerability by correcting the manner in which the Windows OpenType Compact Font Format (CFF) driver validates the parameter values of specially crafted OpenType fonts.

Severity Ratings and Affected Software

This security update is rated CRITICAL for all supported editions of Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2. This security update is also rated IMPORTANT for all supported editions of Windows XP and Windows Server 2003.

Attack Vectors

·         A maliciously crafted OpenType font.

·         A maliciously crafted webpage.

·         A maliciously crafted application.

Mitigating Factors

·         Users would have to be persuaded to visit a malicious website.

Restart Requirement

This update requires a restart.

Bulletins Replaced by This Update

MS10-091

Full Details

http://www.microsoft.com/technet/security/bulletin/MS11-007.mspx

Bulletin Title

Vulnerabilities in Microsoft Visio Could Allow Remote Code Execution (2451879)

Executive Summary

This security update resolves two privately reported vulnerabilities in Microsoft Visio. The vulnerabilities could allow remote code execution if a user opens a specially crafted Visio file. An attacker who successfully exploited either of these vulnerabilities could gain the same user rights as the logged-on user.

The security update addresses the vulnerabilities by correcting the way that Microsoft Visio handles corrupted structures and objects in memory when parsing specially crafted Visio files.

Severity Ratings and Affected Software

This security update is rated IMPORTANT for Microsoft Visio 2002 Service Pack 2, Microsoft Visio 2003 Service Pack 3, and Microsoft Visio 2007 Service Pack 2.

Attack Vectors

·         A maliciously crafted Visio file.

Mitigating Factors

·         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.

·         Exploitation only gains the same user rights as the logged-on account.

·         Cannot be exploited automatically through email, because a user must open an attachment that is sent in an email message.

·         Users would have to be persuaded to visit a malicious website.

Restart Requirement

This update may require a restart.

Bulletins Replaced by This Update

MS10-028 and MS10-036.

Full Details

http://www.microsoft.com/technet/security/bulletin/MS11-008.mspx

Bulletin Title

Vulnerability in JScript and VBScript Scripting Engines Could Allow Information Disclosure (2475792)

Executive Summary

This security update resolves a privately reported vulnerability in the JScript and VBScript scripting engines. The vulnerability could allow information disclosure if a user visited a specially crafted website.

The security update addresses the vulnerability by correcting the manner in which the JScript and VBScript scripting engines process scripts in webpages.

Severity Ratings and Affected Software

This security update is rated IMPORTANT for all supported editions of Windows 7 and MODERATE for all supported editions of Windows Server 2008 R2.

Attack Vectors

·         A maliciously crafted webpage.

Mitigating Factors

·         Users would have to be persuaded to visit a malicious website.

·         By default, all versions of Outlook, Outlook Express, and Windows Mail open HTML email messages in the Restricted Sites zone.

·         By default, IE on Windows 2003 and Windows Server 2008 runs in a restricted mode.

Restart Requirement

This update may require a restart.

Bulletins Replaced by This Update

MS10-022

Full Details

http://www.microsoft.com/technet/security/bulletin/MS11-009.mspx

Bulletin Title

Vulnerability in Windows Client/Server Run-time Subsystem Could Allow Elevation of Privilege (2476687)

Executive Summary

This security update resolves a privately reported vulnerability in the Microsoft Windows Client/Server Run-time Subsystem (CSRSS) in Windows XP and Windows Server 2003. The vulnerability could allow elevation of privilege if an attacker logs on to a user's system and starts a specially crafted application that continues running after the attacker logs off in order to obtain the logon credentials of subsequent users.

The security update addresses the vulnerability by correcting the manner in which user processes are terminated upon logoff.

Severity Ratings and Affected Software

This security update is rated IMPORTANT for all supported editions of Windows XP and Windows Server 2003.

Attack Vectors

·         A maliciously crafted application.

·         A maliciously crafted script.

Mitigating Factors

·         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.

Restart Requirement

This update requires a restart.

Bulletins Replaced by This Update

MS10-011

Full Details

http://www.microsoft.com/technet/security/bulletin/MS11-010.mspx

Bulletin Title

Vulnerabilities in Windows Kernel Could Allow Elevation of Privilege (2393802)

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.

The security update addresses the vulnerabilities by ensuring that the Windows kernel properly validates user-supplied data before allocating memory.

Severity Ratings and Affected Software

This security update is rated IMPORTANT for all supported versions of Microsoft Windows.

Attack Vectors

·         A maliciously crafted application.

·         A maliciously crafted script.

Mitigating Factors

·         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.

Restart Requirement

This update requires a restart.

Bulletins Replaced by This Update

MS10-047 and MS10-021.

Full Details

http://www.microsoft.com/technet/security/bulletin/MS11-011.mspx

Bulletin Title

Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (2479628)

Executive Summary

This security update resolves five privately reported vulnerabilities in Microsoft Windows. The vulnerabilities could allow elevation of privilege if an attacker logged on locally and ran a specially crafted application.

The security update addresses the vulnerabilities by correcting the way the Windows kernel-mode drivers validate input passed from user-mode.

Severity Ratings and Affected Software

This security update is rated IMPORTANT for all supported versions of Microsoft Windows.

Attack Vectors

·         A maliciously crafted application.

·         A maliciously crafted script.

Mitigating Factors

·         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.

Restart Requirement

This update requires a restart.

Bulletins Replaced by This Update

MS10-098

Full Details

http://www.microsoft.com/technet/security/bulletin/MS11-012.mspx

Bulletin Title

Vulnerabilities in Kerberos Could Allow Elevation of Privilege (2496930)

Executive Summary

This security update resolves one privately reported vulnerability and one publicly-disclosed vulnerability in Microsoft Windows. The more severe of these vulnerabilities could allow elevation of privilege if a local, authenticated attacker installs a malicious service on a domain-joined computer.

This update addresses the vulnerabilities by preventing the use of weak hashing algorithms in both Windows Kerberos and Windows KDC and by preventing the client from downgrading the encryption standard to DES for Kerberos communication between client and server.

Severity Ratings and Affected Software

This security update is rated IMPORTANT for all supported editions of Windows XP, Windows Server 2003, Windows 7, and Windows Server 2008 R2.

Attack Vectors

·         A maliciously crafted application.

Mitigating Factors

·         This vulnerability is not exploitable on domains where the domain controllers are running Windows Server 2008 or Windows Server 2008 R2.

·         An attacker must have valid logon credentials and be able to log on locally to exploit this vulnerability.

Restart Requirement

This update requires a restart.

Bulletins Replaced by This Update

MS10-014

Full Details

http://www.microsoft.com/technet/security/bulletin/MS11-013.mspx

Bulletin Title

Vulnerability in Local Security Authority Subsystem Service Could Allow Local Elevation of Privilege (2478960)

Executive Summary

This security update resolves a privately reported vulnerability in the Local Security Authority Subsystem Service (LSASS) in Windows XP and Windows Server 2003. The vulnerability could allow elevation of privilege if an attacker logs on to a system and runs a specially crafted application.

The security update addresses the vulnerability by correcting the manner in which LSASS handles specific values used in the authentication process.

Severity Ratings and Affected Software

This security update is rated IMPORTANT for all supported editions of Windows XP and Windows Server 2003.

Attack Vectors

·         A maliciously crafted application.

·         A maliciously crafted script.

Mitigating Factors

·         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.

Restart Requirement

This update requires a restart.

Bulletins Replaced by This Update

MS08-002

Full Details

http://www.microsoft.com/technet/security/bulletin/MS11-014.mspx