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A  U  S  C  E  R  T                                           A  L  E  R  T

                       AL-2007.0022 -- AUSCERT ALERT
                                   [Win]
         Cumulative Security Update for Internet Explorer (928090)
                             14 February 2007

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        AusCERT Alert Summary
        ---------------------

Product:              Microsoft Internet Explorer 5.01, 6 and 7
Publisher:            Microsoft
Operating System:     Windows
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2007-0219 CVE-2007-0217 CVE-2006-4697

Original Bulletin:    
http://www.microsoft.com/technet/security/bulletin/ms07-016.mspx
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=473

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MS07-016 - Cumulative Security Update for Internet Explorer (928090)

Affected Software: 
   - Microsoft Windows 2000 Service Pack 4
   - Microsoft Windows XP Service Pack 2
   - Microsoft Windows XP Professional x64 Edition
   - Microsoft Windows Server 2003 and Microsoft Windows Server 2003
     Service Pack 1
   - Microsoft Windows Server 2003 for Itanium-based Systems and Microsoft
     Windows Server 2003 with SP1 for Itanium-based Systems
   - Microsoft Windows Server 2003 x64 Edition

Non-Affected Software:
   - Windows Vista

Full MS07-016 advisory:
   http://www.microsoft.com/technet/security/Bulletin/ms07-016.mspx

Vulnerability Details

COM Object Instantiation Memory Corruption Vulnerability - CVE-2006-4697:

   A remote code execution vulnerability exists in the way Internet
   Explorer instantiates COM objects that are not intended to be
   instantiated in Internet Explorer. An attacker could exploit the
   vulnerability by constructing a specially crafted Web page that could
   potentially allow remote code execution if a user viewed the Web page.
   An attacker who successfully exploited this vulnerability could take
   complete control of an affected system.

COM Object Instantiation Memory Corruption Vulnerability - CVE-2007-0219:

   A remote code execution vulnerability exists in the way Internet
   Explorer instantiates COM objects that are not intended to be
   instantiated in Internet Explorer. An attacker could exploit the
   vulnerability by constructing a specially crafted Web page that could
   potentially allow remote code execution if a user viewed the Web page.
   An attacker who successfully exploited this vulnerability could take
   complete control of an affected system.

FTP Server Response Parsing Memory Corruption Vulnerability - CVE-2007-0217:

   A remote code execution vulnerability exists in the way Internet
   Explorer interprets certain responses from FTP servers. An attacker
   could exploit the vulnerability by sending specially crafted FTP
   responses in an FTP session to the FTP client included in Internet
   Explorer. An attacker who successfully exploited this vulnerability
   could gain the same user rights as the local user. Users whose
   accounts are configured to have fewer user rights on the system could
   be less impacted than users who operate with administrative user
   rights.

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NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
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NOTE: This is only the original release of the security bulletin.  It may
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Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/render.html?cid=1980

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
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