US-CERT Technical Cyber Security Alert TA06-073A -- Microsoft Office and Excel Vulnerabilities

15/03/06, US-CERT Technical Cyber Security Alert TA06-073A -- Microsoft Office and Excel Vulnerabilities
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To: cert-advisory@cert.org
Subject: US-CERT Technical Cyber Security Alert TA06-073A -- Microsoft Office and Excel Vulnerabilities
From: CERT Advisory <cert-advisory@cert.org>
Date: Tue, 14 Mar 2006 18:03:58 -0500
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                        National Cyber Alert System

                Technical Cyber Security Alert TA06-073A


Microsoft Office and Excel Vulnerabilities

   Original release date: March 14, 2006
   Last revised: --
   Source: US-CERT


Systems Affected

     * Microsoft Office for Windows and Mac OS X
     * Microsoft Excel for Windows and Mac OS X
     * Microsoft Works Suite for Windows

   For more complete information, refer to the Microsoft Security
   Bulletin Summary for March 2006.


Overview

   Microsoft has released updates that address critical vulnerabilities
   in Microsoft Office and Excel. Exploitation of these vulnerabilities
   could allow a remote, unauthenticated attacker to execute arbitrary
   code or cause a denial of service on a vulnerable system.


I. Description

   Microsoft Security Bulletin Summary for March 2006 addresses
   vulnerabilities in Microsoft Office and Excel. Further information is
   available in the following US-CERT Vulnerability Notes:

   VU#339878 - Microsoft Excel malformed parsing format file memory
   corruption vulnerability 

   Microsoft Excel contains a memory corruption vulnerability. This
   vulnerability may allow a remote attacker to execute arbitrary code on
   a vulnerable system.
   (CVE-2006-0028)

   VU#104302 - Microsoft Excel malformed record memory corruption
   vulnerability 

   Microsoft Excel fails to properly validate records. This vulnerability
   may allow a remote attacker to execute arbitrary code on a vulnerable
   system.
   (CVE-2006-0031)

   VU#123222 - Microsoft Excel malformed graphic memory corruption
   vulnerability 

   Microsoft Excel fails to properly validate graphics. This
   vulnerability may allow a remote attacker to execute arbitrary code on
   a vulnerable system.
   (CVE-2006-0030)

   VU#235774 - Microsoft Excel malformed description memory corruption
   vulnerability 

   Microsoft Excel fails to properly validate the description field. This
   vulnerability may allow a remote attacker to execute arbitrary code on
   a vulnerable system.
   (CVE-2006-0029)

   VU#642428 - Microsoft Excel fails to properly perform range validation
   when parsing document files 

   Microsoft Excel contains an error in range validation, which may allow
   a remote unauthenticated, attacker to execute arbitrary code on a
   vulnerable system.
   (CVE-2005-4131)

   VU#682820 - Microsoft Office routing slip buffer overflow 

   Microsoft Office contains a buffer overflow in the parsing of routing
   slips, which may allow an attacker to execute arbitrary code on a
   vulnerable system.
   (CVE-2006-0009)


II. Impact

   A remote, unauthenticated attacker could execute arbitrary code with
   the privileges of the user. If the user is logged on with
   administrative privileges, the attacker could take complete control of
   an affected system. An attacker may also be able to cause a denial of
   service.


III. Solution

Apply Updates

   Microsoft has provided the updates for these vulnerabilities in the
   Security Bulletins and on the Microsoft Update site.


Workarounds

   Please see the following US-CERT Vulnerability Notes for workarounds.


Appendix A. References

     * Microsoft Security Bulletin Summary for March 2006 -
       <http://www.microsoft.com/technet/security/bulletin/ms06-mar.mspx>

     * US-CERT Vulnerability Note VU#339878 -
       <http://www.kb.cert.org/vuls/id/339878>

     * US-CERT Vulnerability Note VU#104302 -
       <http://www.kb.cert.org/vuls/id/104302>

     * US-CERT Vulnerability Note VU#123222 -
       <http://www.kb.cert.org/vuls/id/123222>

     * US-CERT Vulnerability Note VU#235774 -
       <http://www.kb.cert.org/vuls/id/235774>

     * US-CERT Vulnerability Note VU#642428 -
       <http://www.kb.cert.org/vuls/id/642428>

     * US-CERT Vulnerability Note VU#682820 -
       <http://www.kb.cert.org/vuls/id/682820>

     * CVE-2005-4131 -
       <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-4131>

     * CVE-2006-0009 -
       <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0009>

     * CVE-2006-0028 -
       <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0028>

     * CVE-2006-0029 -
       <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0029>

     * CVE-2006-0030 -
       <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0030>

     * CVE-2006-0031 -
       <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0031>

     * Microsoft Update - <https://update.microsoft.com/microsoftupdate>


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

     <http://www.us-cert.gov/cas/techalerts/TA06-073A.html>
 ____________________________________________________________________

   Feedback can be directed to US-CERT Technical Staff. Please send
   email to <cert@cert.org> with "TA06-073A Feedback VU#339878" in the
   subject.
 ____________________________________________________________________

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

   Produced 2006 by US-CERT, a government organization.

   Terms of use:

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


Revision History

   March 14, 2006: Initial release
  
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