Finding and Fixing Combined Security Update (MS12-034) , a High Risk Vulnerability

With Notes on Remediation, Penetration Testing, Disclosures, Patching and Exploits

Contents

  • Vital information on this issue
  • Scanning For and Finding Combined Security Update (MS12-034)
  • Penetration Testing (Pentest) for this Vulnerability
  • Security updates on Combined Security Update (MS12-034)
  • Disclosures related to Combined Security Update (MS12-034)
  • Confirming the Presence of Combined Security Update (MS12-034)
  • False positive/negatives
  • Patching/Repairing this vulnerability
  • Exploits related to Combined Security Update (MS12-034)

Vital Information on This Issue
Combined Security Update (MS12-034) is a high risk vulnerability that is one of the most frequently found on networks around the world. This issue has been around since at least 1990 but has proven either difficult to detect, difficult to resolve or prone to being overlooked entirely.


Vulnerability Name: Combined Security Update (MS12-034)
Test ID: 14691
Risk: High
Category: Policy Checks
Type: Attack
Summary: Multiple vulnerabilities have been found to affect the remote host: - Unspecified vulnerability in the TrueType font parsing engine in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows remote attackers to execute arbitrary code via crafted font data in a Word document or web page, as exploited in the wild in November 2011 by Duqu, aka "TrueType Font Parsing Vulnerability." - Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, Windows 7 Gold and SP1, and Windows 8 Consumer Preview; Office 2003 SP3, 2007 SP2 and SP3, and 2010 Gold and SP1; Silverlight 4 before 4.1.10329; and Silverlight 5 before 5.1.10411 allow remote attackers to execute arbitrary code via a crafted TrueType font (TTF) file, aka "TrueType Font Parsing Vulnerability." - Microsoft .NET Framework 4 does not properly allocate buffers, which allows remote attackers to execute arbitrary code via a crafted XAML browser application (aka XBAP) or a crafted .NET Framework application, aka ".NET Framework Buffer Allocation Vulnerability." - Microsoft .NET Framework 4 does not properly compare index values, which allows remote attackers to cause a denial of service (application hang) via crafted requests to a Windows Presentation Foundation (WPF) application, aka ".NET Framework Index Comparison Vulnerability." - GDI+ in Microsoft Windows Vista SP2 and Server 2008 SP2 and Office 2003 SP3, 2007 SP2 and SP3, and 2010 Gold and SP1 does not properly validate record types in EMF images, which allows remote attackers to execute arbitrary code via a crafted image, aka "GDI+ Record Type Vulnerability." - Heap-based buffer overflow in the Office GDI+ library in Microsoft Office 2003 SP3 and 2007 SP2 and SP3 allows remote attackers to execute arbitrary code via a crafted EMF image in an Office document, aka "GDI+ Heap Overflow Vulnerability." - Double free vulnerability in Microsoft Silverlight 4 before 4.1.10329 on Windows allows remote attackers to execute arbitrary code via vectors involving crafted XAML glyphs, aka "Silverlight Double-Free Vulnerability." - win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, Windows 7 Gold and SP1, and Windows 8 Consumer Preview does not properly handle user-mode input passed to kernel mode for windows and messages, which allows local users to gain privileges via a crafted application, aka "Windows and Messages Vulnerability." - win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, Windows 7 Gold and SP1, and Windows 8 Consumer Preview does not properly manage Keyboard Layout files, which allows local users to gain privileges via a crafted application, aka "Keyboard Layout File Vulnerability." - win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, Windows 7 Gold and SP1, and Windows 8 Consumer Preview does not properly handle user-mode input passed to kernel mode, which allows local users to gain privileges via a crafted application, aka "Scrollbar Calculation Vulnerability."
Impact:
Solution: See solution provided at:http://technet.microsoft.com/en-us/security/bulletin/ms12-034
CVE: CVE-2011-3402 CVE-2012-0159
CVE-2012-0162 CVE-2012-0164
CVE-2012-0165 CVE-2012-0167
CVE-2012-0176 CVE-2012-0180
CVE-2012-0181
CVE-2012-1848
More Information: http://technet.microsoft.com/en-us/security/bulletin/ms12-034
Nist NVD (CVSS): AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS Score: 10.0
For more information on this also issue see: www.securiteam.com

Scanning For and Finding Combined Security Update (MS12-034)
Use of Vulnerability Management tools, like AVDS, are standard practice for the discovery of this vulnerability. The primary failure of VA in finding this vulnerability is related to setting the proper scope and frequency of network scans. It is vital that the broadest range of hosts (active IPs) possible are scanned and that scanning is done frequently. We recommend weekly. Your existing scanning solution or set of test tools should make this not just possible, but easy and affordable. If that is not the case, please consider AVDS.

Penetration Testing (pentest) for this Vulnerability
The Combined Security Update (MS12-034) is prone to false positive reports by most vulnerability assessment solutions. AVDS is alone in using behavior based testing that eliminates this issue. For all other VA tools security consultants will recommend confirmation by direct observation. In any case Penetration testing procedures for discovery of Combined Security Update (MS12-034) produces the highest discovery accuracy rate, but the infrequency of this expensive form of testing degrades its value. The ideal would be to have pentesting accuracy and the frequency and scope possibilities of VA solutions, and this is accomplished only by AVDS.

Security Updates on Combined Security Update (MS12-034)
For the most current updates on this vulnerability please check www.securiteam.com Given that this is one of the most frequently found vulnerabilities, there is ample information regarding mitigation online and very good reason to get it fixed. Hackers are also aware that this is a frequently found vulnerability and so its discovery and repair is that much more important. It is so well known and common that any network that has it present and unmitigated indicates "low hanging fruit" to attackers.

Disclosures related to this vulnerability
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3402 https://technet.microsoft.com/library/security/ms12-034 http://www.cvedetails.com/microsoft-bulletin/ms12-034/

Confirming the Presence of Combined Security Update (MS12-034)
AVDS is currently testing for and finding this vulnerability with zero false positives. If your current set of tools is indicating that it is present but you think it is probably a false positive, please contact us for a demonstration of AVDS.

False positive/negatives
The secret killer of VA solution value is the false positive. There was an industry wide race to find the most vulnerabilities, including Combined Security Update (MS12-034) ,and this resulted in benefit to poorly written tests that beef up scan reports by adding a high percentage of uncertainty. This may have sold a lot of systems some years ago, but it also stuck almost all VA solutions with deliberately inaccurate reporting that adds time to repairs that no administrator can afford. Beyond Security did not participate in this race to mutually assured destruction of the industry and to this day produces the most accurate and actionable reports available.

Patching/Repairing this Vulnerability
http://www.openssh.com/ Combined Security Update (MS12-034) is a high risk vulnerability that is also high frequency and high visibility. This is the most severe combination of security factors that exists and it is extremely important to find it on your network and fix it as soon as possible.

Exploits related to Combined Security Update (MS12-034)
https://technet.microsoft.com/en-us/library/security/ms12-034.aspx

Please also visit www.securiteam.com to view any exploits available for this vulnerability, or search using "Combined Security Update (MS12-034) exploits".


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