November 13, 2012
Microsoft Security Bulletin: November 13
Advisory Overview

November 13, 2012 - Qualys® Vulnerability R&D Lab has released new vulnerability checks in QualysGuard® to protect organizations against 19 vulnerabilities that were fixed in 6 bulletin(s) announced today by Microsoft. 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 bulletins to fix newly discovered flaws in Microsoft Windows. Qualys has released the following checks for these new vulnerabilities:


Microsoft Internet Explorer Cumulative Security Update (MS12-071)
SEVERITY: Urgent Urgent-5 5
QUALYS ID: 100124
VENDOR REFERENCE: MS12-071
CVE REFERENCE: CVE-2012-1538,CVE-2012-1539,CVE-2012-4775
CVSS SCORES: Base 9.3 | Temporal 6.9
THREAT: Microsoft Internet Explorer is prone to multiple vulnerabilities that could allow remote code execution.

Microsoft released a security update that addresses the following vulnerabilities by modifying the way Internet Explorer handles objects in memory.
- CFormElement Use After Free Vulnerability - (CVE-2012-1538)
- CTreePos Use After Free Vulnerability - (CVE-2012-1539)
- CTreeNode Use After Free Vulnerability - (CVE-2012-4775)

Affected Software:
Microsoft Internet Explorer version 9.

This security update is rated Critical.

Note: Previously this was an iDefense exclusive vulnerability with iDefense ID: 781062 and 781058.

IMPACT: Successfully exploiting these vulnerabilities could cause denial of service or execution of arbitrary code.
SOLUTION: Patch:
Following are links for downloading patches to fix the vulnerabilities:

Windows Vista Service Pack 2 (Internet Explorer 9)

Windows Vista x64 Edition Service Pack 2 (Internet Explorer 9)

Windows Server 2008 for 32-bit Systems Service Pack 2 (Internet Explorer 9)

Windows Server 2008 for x64-based Systems Service Pack 2 (Internet Explorer 9)

Windows 7 for 32-bit Systems (Internet Explorer 9)

Windows 7 for 32-bit Systems Service Pack 1 (Internet Explorer 9)

Windows 7 for x64-based Systems (Internet Explorer 9)

Windows 7 for x64-based Systems Service Pack 1 (Internet Explorer 9)

Windows Server 2008 R2 for x64-based Systems (Internet Explorer 9)

Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Internet Explorer 9)

Refer to Microsoft Security Bulletin MS12-071 for further details.

Workaround:
Set Internet and Local intranet security zone settings to "High" to block ActiveX Controls and Active Scripting in these zones.
Add sites that you trust to the Internet Explorer Trusted sites zone.
Configure Internet Explorer to prompt before running Active Scripting or to disable Active Scripting in the Internet and Local intranet security zone.


Microsoft Windows Shell Remote Code Execution Vulnerability (MS12-072)
SEVERITY: Critical Critical-4 4
QUALYS ID: 90844
VENDOR REFERENCE: MS12-072
CVE REFERENCE: CVE-2012-1527,CVE-2012-1528
CVSS SCORES: Base 9.3 | Temporal 6.9
THREAT: This security update resolves two privately reported vulnerabilities in Microsoft Windows. The vulnerabilities could allow remote code execution if a user browses to a specially crafted briefcase in Windows Explorer.

Microsoft has released a security update that addresses the vulnerabilities by modifying the way that Microsoft Windows handles a specially crafted briefcase.

This security update is rated Critical for all supported editions of Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008 (except for Windows Server 2008 for Itanium-based Systems), Windows 7, Windows Server 2008 R2 (except for Windows Server 2008 R2 for Itanium-based Systems), Windows 8 (except for Windows RT), and Windows Server 2012.

IMPACT: Successfully exploiting this vulnerability could allow an attacker to execute arbitrary code.
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 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 8 for 32-bit Systems

Windows 8 for 64-bit Systems

Windows Server 2012

Refer to Microsoft Security Bulletin MS12-072 for further details.

Workaround:
1) Create a backup copy of the registry keys by performing the following command from an elevated command prompt:

Regedit.exe /e briefcase_workaround_rollback.reg HKEY_CLASSES_ROOT\CLSID\{85BBD920-42A0-1069-A2E4-08002B30309D}

2) Create a text file named Disable_briefcase.reg with the following contents:

Windows Registry Editor Version 5.00

[-HKEY_CLASSES_ROOT\CLSID\{85BBD920-42A0-1069-A2E4-08002B30309D}]

3) Run Disable_briefcase.reg with the following command from an elevated command prompt:

Regedit.exe /s Disable_briefcase.reg


Microsoft Internet Information Services (IIS) Information Disclosure Vulnerability (MS12-073)
SEVERITY: Critical Critical-4 4
QUALYS ID: 90842
VENDOR REFERENCE: MS12-073
CVE REFERENCE: CVE-2012-2531,CVE-2012-2532
CVSS SCORES: Base 6.8 | Temporal 5
THREAT: Microsoft Internet Information Service is a Web server available for Microsoft Windows.

Microsoft IIS is prone to an information disclosure vulnerability, This vulnerability is caused by the way that the Microsoft IIS FTP service handles specially crafted FTP commands and also when Microsoft IIS improperly manages the permissions of a log file. (CVE-2012-2531, CVE-2012-2532)

Affected Software:
Microsoft FTP Service 7.0 for IIS 7.0
Microsoft FTP Service 7.5 for IIS 7.0
Microsoft FTP Service 7.5 for IIS 7.5
Internet Information Services 7.5

IMPACT: An attacker who successfully exploited this vulnerability could execute a limited set of FTP commands, prior to the session switching to Transport Layer Security, and discover the usernames and/or passwords of configured accounts.
SOLUTION: Patch:
Following are links for downloading patches to fix the vulnerabilities:

Windows Vista Service Pack 2 (Microsoft FTP Service 7.0 for IIS 7.0)

Windows Vista Service Pack 2 (Microsoft FTP Service 7.5 for IIS 7.0)

Windows Vista x64 Edition Service Pack 2 (Microsoft FTP Service 7.0 for IIS 7.0)

Windows Vista x64 Edition Service Pack 2 (Microsoft FTP Service 7.5 for IIS 7.0)

Windows Server 2008 for 32-bit Systems Service Pack 2 (Microsoft FTP Service 7.0 for IIS 7.0)

Windows Server 2008 for 32-bit Systems Service Pack 2 (Microsoft FTP Service 7.5 for IIS 7.0)

Windows Server 2008 for x64-based Systems Service Pack 2 (Microsoft FTP Service 7.0 for IIS 7.0)

Windows Server 2008 for x64-based Systems Service Pack 2 (Microsoft FTP Service 7.5 for IIS 7.0)

Windows 7 for 32-bit Systems (Microsoft FTP Service 7.5 for IIS 7.5)

Windows 7 for 32-bit Systems (Internet Information Services 7.5)

Windows 7 for 32-bit Systems Service Pack 1 (Microsoft FTP Service 7.5 for IIS 7.5)

Windows 7 for 32-bit Systems Service Pack 1 (Internet Information Services 7.5)

Windows 7 for x64-based Systems (Microsoft FTP Service 7.5 for IIS 7.5)

Windows 7 for x64-based Systems (Internet Information Services 7.5)

Windows 7 for x64-based Systems Service Pack 1 (Microsoft FTP Service 7.5 for IIS 7.5)

For a complete list of patch download links, please refer to Microsoft Security Bulletin MS12-073.


Microsoft .NET Framework Remote Code Execution Vulnerability (MS12-074)
SEVERITY: Critical Critical-4 4
QUALYS ID: 90841
VENDOR REFERENCE: MS12-074
CVE REFERENCE: CVE-2012-1895,CVE-2012-1896,CVE-2012-2519,CVE-2012-4776,CVE-2012-4777
CVSS SCORES: Base 7.5 | Temporal 5.5
THREAT: The Microsoft .NET Framework is a software framework for computers running Microsoft Windows operating systems.

Microsoft .NET Framework is exposed to the following vulnerabilities:

1) An elevation of privilege vulnerability exists in the way that .NET Framework validates the permissions of certain objects performing reflection (CVE-2012-1895).
2) An information disclosure vulnerability exists in Microsoft .NET Framework due to the improper sanitization of output when a function is called from partially trusted code (CVE-2012-1896).
3) A remote code execution vulnerability exists in the way Microsoft .NET Framework handles the loading of DLL files (CVE-2012-2519).
4) A remote code execution vulnerability exists in the way Microsoft .Net Framework retrieves the default web proxy settings (CVE-2012-4776).
5) An elevation of privilege vulnerability exists in the way Microsoft .Net Framework validates permissions for objects involved with reflection (CVE-2012-4777).

This security update is rated Critical for Microsoft .NET Framework 2.0 Service Pack 2, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4, and Microsoft .NET Framework 4.5. It is rated Important for Microsoft .NET Framework 1.0 Service Pack 3 and Microsoft .NET Framework 1.1 Service Pack 1.

IMPACT: Successfully exploiting these security might allow a remote attacker to execute arbitrary code.
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 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 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 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 x64 Edition Service Pack 2 (Microsoft .NET Framework 4)

For a complete list of patch download links, please refer to Microsoft Security Bulletin MS12-074.


Microsoft Windows Kernel-Mode Drivers Remote Code Execution Vulnerability (MS12-075)
SEVERITY: Critical Critical-4 4
QUALYS ID: 90843
VENDOR REFERENCE: MS12-075
CVE REFERENCE: CVE-2012-2530,CVE-2012-2553,CVE-2012-2897
CVSS SCORES: Base 10 | Temporal 7.4
THREAT: The Windows kernel is the core of the operating system. It provides system-level services such as device management and memory management, allocates processor time to processes, and manages error handling.

The kernel is prone to the following vulnerabilities:

A remote code execution vulnerability exists in the way that affected components handle a specially crafted TrueType font file.

An elevation of privilege vulnerability exists when the Windows kernel-mode driver improperly handles objects in memory.

Microsoft has released a security update that addresses the vulnerabilities by correcting the way that the Windows kernel-mode drivers handle objects in memory.

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

IMPACT: An attacker who successfully exploits this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full 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

Windows 8 for 32-bit Systems

Windows 8 for 64-bit Systems

For a complete list of patch download links, please refer to Microsoft Security Bulletin MS12-075.


Microsoft Excel Remote Code Execution Vulnerabilities (MS12-076)
SEVERITY: Critical Critical-4 4
QUALYS ID: 110195
VENDOR REFERENCE: MS12-076
CVE REFERENCE: CVE-2012-1885,CVE-2012-1886,CVE-2012-1887,CVE-2012-2543
CVSS SCORES: Base 9.3 | Temporal 6.9
THREAT: Microsoft Excel is a proprietary spreadsheet application written and distributed by Microsoft.

Excel is prone to multiple remote code execution vulnerabilities that exist in the way that Microsoft Excel handles specially crafted Excel files.

Microsoft has released a security update that addresses the vulnerabilities by correcting how Microsoft Excel parses and validates data when opening specially crafted Excel files.

This security update is rated Important for all supported editions of Microsoft Excel 2003, Microsoft Excel 2007, Microsoft Excel 2010, Microsoft Office 2008 for Mac, and Microsoft Office for Mac 2011; it is also rated Important for supported versions of Microsoft Excel Viewer and Microsoft Office Compatibility Pack.

IMPACT: The vulnerabilities could allow remote code execution if a user opens a specially crafted Office file. An attacker who successfully exploits these vulnerabilities could gain the same user rights as the logged-on user.
SOLUTION: Patch:

Refer to Microsoft Security Bulletin MS12-076 for further details.

Workaround:
1) Use the Microsoft Office Isolated Conversion Environment (MOICE) when opening files from unknown or un-trusted sources because it protects Office 2003 installations by more securely opening Word, Excel, and PowerPoint binary format files. Information on MOICE can be found at KB935865.

Impact of workaround #1-
Office 2003 and earlier formatted documents that are converted to the 2007 Microsoft Office System Open XML format by MOICE lose their macro functionality. Documents protected with passwords and Digital Rights Management cannot be converted.

2) Microsoft Office File Block policy should be used to block the opening of Office 2003 and earlier documents from unknown or untrusted sources. The following registry scripts can be used to set the File Block policy.

Impact of workaround #2-
If File Block policy is configured without special "exempt directory" configuration (see KB922848), Office 2003 files or earlier versions will not open in Office 2003 or 2007 Microsoft Office System.

3) Set Office File Validation to disable the opening of files that fail validation in Excel 2003 and Excel 2007

Impact of workaround #3-
Office File Validation will no longer allow the opening of suspicious files.

4) Do not open Excel files from untrusted sources

This new vulnerability check is included in Qualys vulnerability signatures 2.2.270-3. 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:
    • 100124
    • 90844
    • 90842
    • 90841
    • 90843
    • 110195
  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
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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.

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