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                    National Cyber Alert System

              Technical Cyber Security Alert TA11-347A


Microsoft Updates for Multiple Vulnerabilities

   Original release date: December 13, 2011
   Last revised: --
   Source: US-CERT


Systems Affected

     * Microsoft Windows
     * Microsoft Office
     * Internet Explorer


Overview

   There are multiple vulnerabilities in Microsoft Windows, Office,
   and Internet Explorer. Microsoft has released updates to address
   these vulnerabilities.


I. Description

   The Microsoft Security Bulletin Summary for December 2011 describes
   multiple vulnerabilities in Microsoft Windows. Microsoft has
   released updates to address the vulnerabilities. Additional details
   for MS11-091 can be found in US-CERT vulnerability note VU#361441.


II. Impact

   A remote, unauthenticated attacker could execute arbitrary code,
   cause a denial of service, or gain unauthorized access to your
   files or system.


III. Solution

   Apply updates

   Microsoft has provided updates for these vulnerabilities in the
   Microsoft Security Bulletin Summary for December 2011. That
   bulletin describes any known issues related to the updates.
   Administrators are encouraged to note these issues and test for any
   potentially adverse effects. In addition, administrators should
   consider using an automated update distribution system such as
   Windows Server Update Services (WSUS).


IV. References

 * Microsoft Security Bulletin Summary for December 2011 -
   <https://technet.microsoft.com/en-us/security/bulletin/ms11-dec>

 * Microsoft Windows Server Update Services -
   <http://technet.microsoft.com/en-us/wsus/default.aspx>

 * US-CERT Vulnerability Note VU#361441 -
   <http://www.kb.cert.org/vuls/id/361441>

 ____________________________________________________________________

   The most recent version of this document can be found at:

     <http://www.us-cert.gov/cas/techalerts/TA11-347A.html>
 ____________________________________________________________________

   Feedback can be directed to US-CERT Technical Staff. Please send
   email to <cert@cert.org> with "TA11-347A Feedback VU#828387" in
   the subject.
 ____________________________________________________________________

   For instructions on subscribing to or unsubscribing from this
   mailing list, visit <http://www.us-cert.gov/cas/signup.html>.
 ____________________________________________________________________

   Produced 2011 by US-CERT, a government organization.

   Terms of use:

     <http://www.us-cert.gov/legal.html>
 ____________________________________________________________________

Revision History

  December 13, 2011: Initial release


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