US-CERT Technical Cyber Security Alert TA05-102A -- Multiple Vulnerabilities in Microsoft Windows Components

13/04/05, US-CERT Technical Cyber Security Alert TA05-102A -- Multiple Vulnerabilities in Microsoft Windows Components
From: CERT Advisory <cert-advisory@cert.org>

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To: cert-advisory@cert.org
Subject: US-CERT Technical Cyber Security Alert TA05-102A -- Multiple Vulnerabilities in Microsoft Windows Components
From: CERT Advisory <cert-advisory@cert.org>
Date: Tue, 12 Apr 2005 21:23:08 -0400
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                      National Cyber Alert System 

              Technical Cyber Security Alert TA05-102A 

Multiple Vulnerabilities in Microsoft Windows Components

   Original release date: April 12, 2005
   Last revised: --
   Source: US-CERT


Systems Affected

     * Microsoft Windows Systems

   For a complete list of affected versions of the Windows operating
   systems and components, refer to the Microsoft Security Bulletins.


Overview

   Microsoft has released a Security Bulletin Summary for April, 2005.
   This summary includes several bulletins that address
   vulnerabilities in various Windows applications and
   components. Exploitation of some vulnerabilities can result in the
   remote execution of arbitrary code by a remote attacker. Details of
   the vulnerabilities and their impacts are provided below.


I. Description

   The list below provides a mapping between Microsoft's Security
   Bulletins and the related US-CERT Vulnerability Notes. More
   information related to the vulnerabilities is available in these
   documents.

   Microsoft Security Bulletin MS05-020: 
    Cumulative Security Update for Internet Explorer (890923)

     VU#774338 Microsoft Internet Explorer DHTML objects contain a
               race condition

     VU#756122 Microsoft Internet Explorer URL validation routine
               contains a buffer overflow

     VU#222050 Microsoft Internet Explorer Content Advisor contains a
               buffer overflow


   Microsoft Security Bulletin MS05-02:
    Vulnerability in Exchange Server Could Allow Remote Code 
    Execution (894549)

     VU#275193 Microsoft Exchange Server contains unchecked buffer in SMTP
               extended verb handling


   Microsoft Security Bulletin MS05-022: 
    Vulnerability in MSN Messenger Could Lead to Remote Code Execution 
    (896597)

     VU#633446 Microsoft MSN Messenger GIF processing
               buffer overflow


   Microsoft Security Bulletin MS05-019: 
    Vulnerabilities in TCP/IP Could Allow Remote Code Execution and Denial 
    of Service (893066)

      VU#233754 Microsoft Windows does not adequately validate IP
                packets


II. Impact

   Exploitation of these vulnerabilities may permit a remote attacker to
   execute arbitrary code on a vulnerable Windows system, or cause a
   denial-of-service condition.


III. Solution

Apply a patch

   Microsoft has provided the patches for these vulnerabilities in the
   Security Bulletins and on Windows Update.


Appendix A. References

     * Microsoft's Security Bulletin Summary for April, 2005 - <
       http://www.microsoft.com/technet/security/bulletin/ms05-apr.mspx>

     * US-CERT Vulnerability Note VU#774338 -
       <http://www.kb.cert.org/vuls/id/774338>

     * US-CERT Vulnerability Note VU#756122 -
       <http://www.kb.cert.org/vuls/id/756122>

     * US-CERT Vulnerability Note VU#222050 -
       <http://www.kb.cert.org/vuls/id/222050>

     * US-CERT Vulnerability Note VU#275193 -
       <http://www.kb.cert.org/vuls/id/275193>

     * US-CERT Vulnerability Note VU#633446 -
       <http://www.kb.cert.org/vuls/id/633446>

     * US-CERT Vulnerability Note VU#233754 -
       <http://www.kb.cert.org/vuls/id/233754>
   _________________________________________________________________

   Feedback can be directed to the authors: Will Dormann, Jeff Gennari,
   Chad Dougherty, Ken MacInnis, Jason Rafail, Art Manion, and Jeff
   Havrilla.
   _________________________________________________________________

    This document is available from: 
   
      <http://www.us-cert.gov/cas/techalerts/TA05-102A.html>      
   
   _________________________________________________________________

   Copyright 2005 Carnegie Mellon University.
   
   Terms of use: <http://www.us-cert.gov/legal.html>
   _________________________________________________________________

   Revision History

   April 12, 2005: Initial release


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