April 10, 2012
Microsoft Security Bulletin: April 10
Advisory Overview

April 10, 2012 - Qualys® Vulnerability R&D Lab has released new vulnerability checks in QualysGuard® to protect organizations against vulnerabilities that were announced in 6 security bulletins today. Customers can immediately audit their networks for these and other new vulnerabilities by accessing their QualysGuard subscription.Please visit our podcast page for patch tuesday prioritization and summary.

Vulnerability Details

Microsoft has released 6 security patches to fix newly discovered flaws in Microsoft Windows. Qualys has released the following checks for these new vulnerabilities:


Microsoft Internet Explorer Cumulative Security Update (MS12-023)
SEVERITY: Urgent Urgent-5 5
QUALYS ID: 100113
VENDOR REFERENCE: MS12-023
CVE REFERENCE: CVE-2012-0168 | CVE-2012-0169 | CVE-2012-0170 | CVE-2012-0171 | CVE-2012-0172
CVSS SCORES: Base 9.3 | Temporal 6.9
THREAT: Microsoft Internet Explorer is a Web browser available for Microsoft Windows.

Internet Explorer is prone to multiple vulnerabilities that could allow remote code execution.

Microsoft has released a security update that addresses the vulnerabilities by modifying the way Internet Explorer handles the printing of specially crafted HTML content and the way Internet Explorer handles objects in memory.

This security update is rated Critical for Internet Explorer 6, Internet Explorer 7, Internet Explorer 8 and Internet Explorer 9 on Windows clients and Moderate for Internet Explorer 6, Internet Explorer 7, Internet Explorer 8 and Internet Explorer 9 on Windows servers.

Note: Previously this was an iDefense exclusive vulnerability with iDefense ID: 684425.

IMPACT: The most severe vulnerabilities could allow remote code execution if a user views a specially crafted webpage using Internet Explorer. An attacker who successfully exploited any of these vulnerabilities could gain the same user rights as the current user.
SOLUTION: Patch:
Following are links for downloading patches to fix the vulnerabilities:

Windows XP Service Pack 3 (Internet Explorer 6)

Windows XP Professional x64 Edition Service Pack 2 (Internet Explorer 6)

Windows Server 2003 Service Pack 2 (Internet Explorer 6)

Windows Server 2003 x64 Edition Service Pack 2 (Internet Explorer 6)

Windows Server 2003 with SP2 for Itanium-based Systems (Internet Explorer 6)

Windows XP Service Pack 3 (Internet Explorer 7)

Windows XP Professional x64 Edition Service Pack 2 (Internet Explorer 7)

Windows Server 2003 Service Pack 2 (Internet Explorer 7)

Windows Server 2003 x64 Edition Service Pack 2 (Internet Explorer 7)

Windows Server 2003 with SP2 for Itanium-based Systems (Internet Explorer 7)

Windows Vista Service Pack 2 (Internet Explorer 7)

Windows Vista x64 Edition Service Pack 2 (Internet Explorer 7)

Windows Server 2008 for 32-bit Systems Service Pack 2 (Internet Explorer 7)

Windows Server 2008 for x64-based Systems Service Pack 2 (Internet Explorer 7)

Windows Server 2008 for Itanium-based Systems Service Pack 2 (Internet Explorer 7)

Windows XP Service Pack 3 (Internet Explorer 8)

For a complete list of patch download links, please refer to Microsoft Security Bulletin MS12-023.

Workaround:
1) Set Internet and Local intranet security zone settings to "High" to prompt before running ActiveX Controls and Active Scripting

2) Configure Internet Explorer to prompt before running Active Scripting or to disable Active Scripting in the Internet and Local intranet security zone

Impact of workaround #1 and #2: On visiting Web sites on the Internet or Intranet that use ActiveX or Active Scripting to provide additional functionality, you will be prompted frequently.


Microsoft Windows Remote Code Execution Vulnerability (MS12-024)
SEVERITY: Urgent Urgent-5 5
QUALYS ID: 90792
VENDOR REFERENCE: MS12-024
CVE REFERENCE: CVE-2012-0151
CVSS SCORES: Base 10 | Temporal 7.4
THREAT: A remote code execution vulnerability exists in Microsoft Windows. The vulnerability occurs when the Windows Authenticode Signature Verification function improperly validates the file digest of a specially crafted PE file (CVE-2012-0151).

The vulnerability could allow remote code execution if a user or application runs or installs a specially crafted, signed portable executable file on an affected system.

This security update is rated Critical for all supported releases of Microsoft Windows.

IMPACT: An attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. 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
SOLUTION: Patch:
Following are links for downloading patches to fix the vulnerabilities:

Windows XP Service Pack 3

Windows XP Professional x64 Edition Service Pack 2

Windows Server 2003 Service Pack 2

Windows Server 2003 x64 Edition Service Pack 2

Windows Server 2003 with SP2 for Itanium-based Systems

Windows Vista Service Pack 2

Windows Vista x64 Edition Service Pack 2

Windows Server 2008 for 32-bit Systems Service Pack 2

Windows Server 2008 for x64-based Systems Service Pack 2

Windows Server 2008 for Itanium-based Systems Service Pack 2

Windows 7 for 32-bit Systems

Windows 7 for 32-bit Systems Service Pack 1

Windows 7 for x64-based Systems

Windows 7 for x64-based Systems Service Pack 1

Windows Server 2008 R2 for x64-based Systems

Windows Server 2008 R2 for x64-based Systems Service Pack 1

Windows Server 2008 R2 for Itanium-based Systems

Windows Server 2008 R2 for Itanium-based Systems Service Pack 1

Refer to Microsoft Security Bulletin MS12-024 for further details.


Microsoft Forefront Unified Access Gateway Information Disclosure Vulnerability (MS12-026)
SEVERITY: Serious Serious-3 3
QUALYS ID: 90790
VENDOR REFERENCE: MS12-026
CVE REFERENCE: CVE-2012-0146 | CVE-2012-0147
CVSS SCORES: Base 5.8 | Temporal 4.3
THREAT: Microsoft Forefront Unified Access Gateway (UAG) is a reverse proxy and VPN solution that provides secure remote access to corporate networks for remote employees and business partners.

A spoofing vulnerability exists in Forefront Unified Access Gateway (UAG) that could lead to information disclosure. The vulnerability could allow spoofing by redirecting web traffic intended for the UAG server to a malicious website (CVE-2012-0146).

A vulnerability exists in Microsoft Unified Access Gateway (UAG) that could allow an unauthenticated user to access the default website of the Microsoft UAG server from the external network (CVE-2012-0147).

This security update is rated Important for Microsoft Forefront Unified Access Gateway 2010 Service Pack 1 and Microsoft Forefront Unified Access Gateway 2010 Service Pack 1 Update 1.

IMPACT: Successfully exploiting these vulnerabilities might allow a remote attacker to gain access to sensitive information.
SOLUTION: Patch:
Following are links for downloading patches to fix the vulnerabilities:

Microsoft Forefront Unified Access Gateway 2010 Service Pack 1

Microsoft Forefront Unified Access Gateway 2010 Service Pack 1 Update 1

Refer to Microsoft Security Bulletin MS12-026 for further details.


Microsoft Windows Common Controls Remote Code Execution Vulnerability (MS12-027)
SEVERITY: Urgent Urgent-5 5
QUALYS ID: 90793
VENDOR REFERENCE: MS12-027
CVE REFERENCE: CVE-2012-0158
CVSS SCORES: Base 9.3 | Temporal 7.7
THREAT: Windows Common Controls are ActiveX controls contained in the MSCOMCTL.OCX file.

A remote code execution vulnerability exists in the Windows common controls. The vulnerability occurs when the ActiveX controls, while being used in Internet Explorer, corrupts the system state in such a way as to allow an attacker to execute arbitrary code. (CVE-2012-0158)

Affected Software:
Microsoft Office 2003 Service Pack 3
Microsoft Office 2003 Web Components Service Pack 3
Microsoft Office 2007 Service Pack 2
Microsoft Office 2007 Service Pack 3
Microsoft Office 2010 (32-bit editions)
Microsoft Office 2010 Service Pack 1 (32-bit editions)
Microsoft SQL Server 2000 Analysis Services Service Pack 4
Microsoft SQL Server 2000 Service Pack 4
Microsoft SQL Server 2005 Express Edition with Advanced Services Service Pack 4
Microsoft SQL Server 2005 for 32-bit Systems Service Pack 4
Microsoft SQL Server 2005 for Itanium-based Systems Service Pack 4
Microsoft SQL Server 2005 for x64-based Systems Service Pack 4
Microsoft SQL Server 2008 for 32-bit Systems Service Pack 2
Microsoft SQL Server 2008 for 32-bit Systems Service Pack 3
Microsoft SQL Server 2008 for x64-based Systems Service Pack 2
Microsoft SQL Server 2008 for x64-based Systems Service Pack 3
Microsoft SQL Server 2008 for Itanium-based Systems Service Pack 2
Microsoft SQL Server 2008 for Itanium-based Systems Service Pack 3
Microsoft SQL Server 2008 R2 for 32-bit Systems
Microsoft SQL Server 2008 R2 for x64-based Systems
Microsoft SQL Server 2008 R2 for Itanium-based Systems
Microsoft BizTalk Server 2002 Service Pack 1
Microsoft Commerce Server 2002 Service Pack 4
Microsoft Commerce Server 2007 Service Pack 2
Microsoft Commerce Server 2009
Microsoft Commerce Server 2009 R2
Microsoft Visual FoxPro 8.0 Service Pack 1
Microsoft Visual FoxPro 9.0 Service Pack 2
Visual Basic 6.0 Runtime

This security update is rated Critical.

IMPACT: An attacker who successfully exploited this vulnerability could gain the same user rights as the logged-on user. If a user is logged on with administrative user rights, an attacker who successfully exploited this vulnerability could take complete control of an affected system.
SOLUTION: Patch:
Following are links for downloading patches to fix the vulnerabilities:

Microsoft Office 2003 Service Pack 3

Microsoft Office 2003 Web Components Service Pack 3

Microsoft Office 2007 Service Pack 2

Microsoft Office 2007 Service Pack 3

Microsoft Office 2010 (32-bit editions)

Microsoft Office 2010 Service Pack 1 (32-bit editions)

Microsoft SQL Server 2000 Analysis Services Service Pack 4

Microsoft SQL Server 2000 Service Pack 4

Microsoft SQL Server 2005 Express Edition with Advanced Services Service Pack 4

Microsoft SQL Server 2005 for 32-bit Systems Service Pack 4

Microsoft SQL Server 2005 for Itanium-based Systems Service Pack 4

Microsoft SQL Server 2005 for x64-based Systems Service Pack 4

Microsoft SQL Server 2008 for 32-bit Systems Service Pack 2

Microsoft SQL Server 2008 for 32-bit Systems Service Pack 3

Microsoft SQL Server 2008 for x64-based Systems Service Pack 2

Microsoft SQL Server 2008 for x64-based Systems Service Pack 3

Microsoft SQL Server 2008 for Itanium-based Systems Service Pack 2

Microsoft SQL Server 2008 for Itanium-based Systems Service Pack 3

Microsoft SQL Server 2008 R2 for 32-bit Systems

For a complete list of patch download links, please refer to Microsoft Security Bulletin MS12-027.


Microsoft Office Remote Code Execution Vulnerability (MS12-028)
SEVERITY: Critical Critical-4 4
QUALYS ID: 110179
VENDOR REFERENCE: MS12-028
CVE REFERENCE: CVE-2012-0177
CVSS SCORES: Base 8.5 | Temporal 6.3
THREAT: A remote code execution vulnerability exists in Microsoft Office Works File Converter. The Microsoft Works converter does not properly validate the .wps file format when parsing crafted files.

Microsoft has released a security update that addresses the vulnerability by correcting the Microsoft Works converter.

Affected Software:
Microsoft Office 2007 Service Pack 2
Microsoft Works 9
Microsoft Works 6-9 File Converter

This security update is rated Important.

IMPACT: The vulnerability could allow remote code execution if a user opens a specially crafted Word file. An attacker who successfully exploits this vulnerability could gain the same user rights as the logged-on user.
SOLUTION: Patch:
Following are links for downloading patches to fix the vulnerabilities:

Microsoft Office 2007 Service Pack 2

Microsoft Works 9

Microsoft Works 6-9 File Converter

Refer to Microsoft Security Bulletin MS12-028 for further details.

Workaround:
Do not open untrusted office files.


Microsoft .NET Framework Remote Code Execution Vulnerability (MS12-025)
SEVERITY: Critical Critical-4 4
QUALYS ID: 90757
VENDOR REFERENCE: 2639658
CVE REFERENCE: CVE-2012-0163
CVSS SCORES: Base 9.3 | Temporal 7.3
THREAT:

The .NET Framework is a software library used to provide a language agnostic software framework on the Windows platform. ASP.NET is a Web application framework developed and marketed by Microsoft.

This security update resolves one privately reported vulnerability in Microsoft .NET Framework and addresses the vulnerability by correcting the manner in which the Microsoft .NET Framework validates parameters when passing data to a function.

The vulnerability could allow remote code execution on a client system if a user views a specially crafted webpage using a web browser that can run XAML Browser Applications (XBAPs).

The vulnerability could also allow remote code execution on a server system running IIS, if that server allows processing ASP.NET pages and an attacker succeeds in uploading a specially crafted ASP.NET page to that server and then executes the page, as could be the case in a web hosting scenario.

This vulnerability could also be used by Windows .NET applications to bypass Code Access Security (CAS) restrictions. In a web browsing attack scenario, an attacker could host a website that contains a webpage that is used to exploit this vulnerability.

Affected Versions:
Microsoft .NET Framework 1.0 Service Pack 3, Microsoft .NET Framework 1.1 Service Pack 1, Microsoft .NET Framework 2.0 Service Pack 2, Microsoft .NET Framework 3.5.1, and Microsoft .NET Framework 4 on all supported editions of Microsoft Windows.

This security update is rated Critical.

IMPACT: Successfully exploiting this vulnerability could allow remote code execution on a client system. The compromised websites and websites that accept or host user-provided content or advertisements could contain specially crafted content that could exploit this vulnerability. In all cases, however, an attacker would have no way to force users to visit these websites. Instead, an attacker would have to convince users to visit the website, typically by getting them to click a link in an email message or Instant Messenger message that takes users to the attacker's website.
SOLUTION: Patch:
Following are links for downloading patches to fix the vulnerabilities:

Windows XP Service Pack 3 (Microsoft .NET Framework 1.0 Service Pack 3)

Windows XP Service Pack 3 (Microsoft .NET Framework 1.1 Service Pack 1)

Windows XP Service Pack 3 (Microsoft .NET Framework 2.0 Service Pack 2)

Windows XP Service Pack 3 (Microsoft .NET Framework 4)

Windows XP Professional x64 Edition Service Pack 2 (Microsoft .NET Framework 1.1 Service Pack 1)

Windows XP Professional x64 Edition Service Pack 2 (Microsoft .NET Framework 2.0 Service Pack 2)

Windows XP Professional x64 Edition Service Pack 2 (Microsoft .NET Framework 4)

Windows Server 2003 Service Pack 2 (Microsoft .NET Framework 1.1 Service Pack 1)

Windows Server 2003 Service Pack 2 (Microsoft .NET Framework 2.0 Service Pack 2)

Windows Server 2003 Service Pack 2 (Microsoft .NET Framework 4)

Windows Server 2003 x64 Edition Service Pack 2 (Microsoft .NET Framework 1.1 Service Pack 1)

Windows Server 2003 x64 Edition Service Pack 2 (Microsoft .NET Framework 2.0 Service Pack 2)

Windows Server 2003 x64 Edition Service Pack 2 (Microsoft .NET Framework 4)

Windows Server 2003 with SP2 for Itanium-based Systems (Microsoft .NET Framework 1.1 Service Pack 1)

Windows Server 2003 with SP2 for Itanium-based Systems (Microsoft .NET Framework 2.0 Service Pack 2)

Windows Server 2003 with SP2 for Itanium-based Systems (Microsoft .NET Framework 4)

For a complete list of patch download links, please refer to Microsoft Security Bulletin MS12-025.

This new vulnerability check is included in Qualys vulnerability signatures 2.2.96-3. Each QualysGuard account is automatically updated with the latest vulnerability signatures as they become available. To view the vulnerability signature version in your account, from the QualysGuard HOME menu, select the Account Info tab.

SELECTIVE SCAN INSTRUCTIONS USING QUALYSGUARD:

To perform a selective vulnerability scan, configure a scan profile to use the following options:

  1. Ensure access to TCP ports 135 and 139 are available.
  2. Enable Windows Authentication (specify Authentication Records).
  3. Enable the following Qualys IDs:
    • 100113
    • 90792
    • 90757
    • 90790
    • 90793
    • 110179
  4. If you would like the scan to return the Windows Hostname, also include QID 82044 and ensure access to UDP port 137 is available.
  5. If you would like to be notified if QualysGuard is unable to logon to a host (if Authentication fails), also include QID 105015.

In addition, prior to running a scan for these new vulnerabilities, you can estimate your exposure to these new threats by running the Risk Matrix Report, available from the QualysGuard HOME page.


Technical Support
For more information, customers may contact Qualys Technical Support directly at support@qualys.com or by telephone toll free at:
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About QualysGuard
QualysGuard is an on-demand security audit service delivered over the web that enables organizations to effectively manage their vulnerabilities and maintain control over their network security with centralized reports, verified remedies, and full remediation workflow capabilities with trouble tickets. QualysGuard provides comprehensive reports on vulnerabilities including severity levels, time to fix estimates and impact on business, plus trend analysis on security issues. By continuously and proactively monitoring all network access points, QualysGuard dramatically reduces security managers' time researching, scanning and fixing network exposures and enables companies to eliminate network vulnerabilities before they can be exploited.

Access for QualysGuard customers: https://qualysguard.qualys.com

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