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Vulnerable Microsoft VC++ 2005 RTM runtime libraries installed with "Microsoft Security Essentials" (and numerous other Microsoft products)
From: "Stefan Kanthak" <stefan.kanthak () nexgo de>
Date: Mon, 3 Jun 2013 02:12:56 +0200

Hi @ll,

this is part 2 of "Defense in depth -- the Microsoft way", see
<http://seclists.org/fulldisclosure/2013/May/107>


On Windows NT 5.x the current "Microsoft Security Essentials" v4.2
(available from <http://www.microsoft.com/security_essentials>,
and offered as optional update KB2804527 via "Microsoft Update)
as well as MANY other Microsoft products [*] install outdated and
vulnerable Microsoft Visual C++ Runtime Libraries MSVC?80.DLL
v8.0.50727.42


| C:\>filever /S %SystemRoot%\msvc?80.dll
|         c:\windows\winsxs\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.42_x-ww_0de06acd\msvc*
| --a-- W32i   DLL ENU    8.0.50727.42 shp    479,232 09-22-2005 msvcm80.dll
| --a-- W32i   DLL ENU    8.0.50727.42 shp    548,864 09-22-2005 msvcp80.dll
| --a-- W32i   DLL ENU    8.0.50727.42 shp    626,688 09-22-2005 msvcr80.dll


These libraries come as part of the bundled component "Microsoft
Application Error Reporting"; its installer DW20Shared.msi contains
the outdated and vulnerable libraries (which are installed even if
a newer version is already present) in form of an MSI merge module
which in turn is part of Visual C++/Studio 2005 RTM, whose support
ended 2008-01-08, see
<http://support.microsoft.com/lifecycle/search/default.aspx?sort=PN&alpha=Visual+Studio+2005&Filter=FilterNO>

Current and supported versions of Visual C++/Studio 2005 SP1 come
with updated MSI merge modules, see
<http://support.microsoft.com/kb/2643995>


These libraries (as well as the MSI merge module) have been updated
multiple times since: see
<http://support.microsoft.com/kb/919588>
<http://support.microsoft.com/kb/923610>
<http://support.microsoft.com/kb/932391>
<http://support.microsoft.com/kb/932392>
<http://support.microsoft.com/kb/973544> (alias MS09-035)
<http://support.microsoft.com/kb/973882>
<http://support.microsoft.com/kb/2467175> (alias MS11-025)
<http://support.microsoft.com/kb/2538242> (alias MS11-025)


Due to the end-of-life condition of Visual C++/Studio 2005 RTM the
security bulletins MS09-035 and MS11-025 dont list these old versions
any more.


The FAQ section of
<http://technet.microsoft.com/en-us/security/bulletin/ms11-025> says:

| In the case where a system has no MFC applications currently installed
| but does have the vulnerable Visual Studio or Visual C++ runtimes
| installed, Microsoft recommends that users install this update as a
| defense-in-depth measure, in case of an attack vector being introduced
| or becoming known at a later time.

Of course the same holds for ATL applications (where MS09-035 recommends

| Developers who have built components and controls using ATL should
| download this update and recompile their components and controls
| following the guidance provided in the following MSDN article.

and refers to <http://msdn.microsoft.com/en-us/vstudio/ee309358.aspx>)
and CRT applications too.


The outdated and vulnerable libraries are NOT detected by the Windows
Update Agent and thus not replaced with their current version.


The VERY simple fix/mitigation: either uninstall DW20Shared.msi (run
MSIEXEC.EXE /X {95120000-00B9-0409-0000-0000000FF1CE})
or install the current MSVC++ 2005 Runtime Redistributable, see
<http://support.microsoft.com/kb/2538242>


Timeline:

2012-06-18    vendor informed

2012-06-20    vendor acknowledges receipt

2012-06-20    sent additional info (log files)

2012-08-01    vendor replies: not reproducible on Windows 7

2012-08-02    sent additional info: only Windows XP and Server 2003
              are affected, can be seen in the log files sent before

2012-10-09    sent additional info: (3rd party) products which dont
              ship a current MSVC++ 2005 Runtime are affected too

2012-11-29    vendor replies: not able to find vulnerabilities

2012-11-29    asked vendor what MS09-035 and MS11-025 are good for
              then, and for the purpose of their recommendations and
              FAQ

...

2013-06-03    report published


Stefan Kanthak


[*] DW20Shared.msi is bundled with numerous other Microsoft products too,
    including

    * Windows Defender
    * Forefront Security ...
    * Office 2003 (and every single component of it, Word, Excel, PowerPoint,
      Outlook, Visio, Access, Publisher, OneNote, Project, ...)
    * Office 2007 (and every single component of it, Word, Excel, PowerPoint,
      Outlook, Visio, Access, Publisher, OneNote, Project, ...)
    * Office 2010 (and every single component of it, Word, Excel, PowerPoint,
      Outlook, Visio, Access, Publisher, OneNote, Project, ...)
    * Office Communicator 2005
    * Office Groove 2007
    * Groove Server 2010
    * Sharepoint Services 2.0
    * Sharepoint Services 3.0
    * SharePoint Designer 2007
    * SharePoint Foundation 2010
    * SharePoint Server 2010
    * SQL Server 2005 Native Client
    * SQL Server 2008 Native Client
    * SQL Server 2010 Native Client
    * SQL Server 2012 Native Client
    * SQL Server Compact 3.5
    * .NET Framework 2.0
    * .NET Framework 3.0
    * .NET Framework 3.5
    ...

    Other products which dont ship with the MSVC++ 2005 Runtime
    (like the MDI to TIFF converter, see
    <http://www.microsoft.com/en-us/download/details.aspx?id=30328>)
    use the outdated and vulnerable libraries too.

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