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         National Cyber Alert System

   Technical Cyber Security Alert TA07-345A


Microsoft Updates for Multiple Vulnerabilities

   Original release date: December 11, 2007
   Last revised: --
   Source: US-CERT

Systems Affected

     * Microsoft Windows
     * Microsoft Internet Explorer

Overview

   Microsoft has released updates that address critical vulnerabilities
   in Microsoft Windows and Internet Explorer. Exploitation of these
   vulnerabilities could allow a remote, unauthenticated attacker to
   execute arbitrary commands.

I. Description

   Microsoft has released updates to address vulnerabilities that affect
   Microsoft Windows and Internet Explorer as part of the Microsoft
   Security Bulletin Summary for December 2007. The most severe
   vulnerabilities could allow a remote, unauthenticated attacker to
   execute arbitrary commands. For more information, see the US-CERT
   Vulnerability Notes Database.

II. Impact

   A remote, unauthenticated attacker could execute arbitrary commands on
   a vulnerable system.

III. Solution

Apply updates from Microsoft

   Microsoft has provided updates for these vulnerabilities in the
   December 2007 security bulletins. The security bulletins describe any
   known issues related to the updates. Administrators are encouraged to
   note these issues and test for any potentially adverse effects.
   Administrators should consider using an automated update distribution
   system such as Windows Server Update Services (WSUS).

IV. References

 * US-CERT Vulnerability Notes for Microsoft December 2007 updates -
   <http://www.kb.cert.org/vuls/byid?searchview&query=ms07-dec>

 * Microsoft Security Bulletin Summary for December 2007 -
   <http://www.microsoft.com/technet/security/bulletin/ms07-dec.mspx>

 * Microsoft Update - <https://www.update.microsoft.com/microsoftupdate/>
 
 * Windows Server Update Services -
   <http://www.microsoft.com/windowsserversystem/updateservices/default.mspx>
 
 * Securing Your Web Browser - <http://www.us-cert.gov/reading_room/securing_browser/>
 
 _________________________________________________________________

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

     <http://www.us-cert.gov/cas/techalerts/TA07-345A.html>
 _________________________________________________________________

   Feedback can be directed to US-CERT Technical Staff. Please send
   email to <cert@cert.org> with "TA07-345A Feedback VU#437393" in the
   subject.
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   For instructions on subscribing to or unsubscribing from this
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   Produced 2007 by US-CERT, a government organization.

   Terms of use:

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

Revision History

   December 11, 2007: Initial release


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