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Category:   Application (Web Browser)  >   Microsoft Internet Explorer (IE) Vendors:   Microsoft
Microsoft Internet Explorer DHTML and Script Error Handling Bugs Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1017373
SecurityTracker URL:  http://securitytracker.com/id/1017373
CVE Reference:   CVE-2006-5579, CVE-2006-5581   (Links to External Site)
Date:  Dec 12 2006
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 5.01 SP4, 6
Description:   Two vulnerabilities were reported in Microsoft Internet Explorer (IE). A remote user can cause arbitrary code to be executed on the target user's system.

The browser does not propelry process certain DHTML script function calls to incorrectly created elements [CVE-2006-5581].

The browser may attempt to access previously freed memory when handling script errors in certain situations [CVE-2006-5579].

A remote user can create specially crafted HTML that, when loaded by the target user, will trigger one of these memory corruption errors and execute arbitrary code on the target system. The code will run with the privileges of the target user.

Internet Explorer 7 is not affected.

Microsoft credits Jakob Balle and Carsten Eiram of Secunia Research with reporting the script error vulnerability and Sam Thomas and TippingPoint with reporting the DHTML script vulnerability.

Impact:   A remote user can create HTML that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   The vendor has issued the following fixes as part of a cumulative update for Internet Explorer:

Microsoft Internet Explorer 5.01 Service Pack 4 on Windows 2000 Service Pack 4:

http://www.microsoft.com/downloads/details.aspx?FamilyId=1D28E62C-09D3-4F38-BEA3-3FC501449D29

Microsoft Internet Explorer 6 Service Pack 1 when installed on Windows 2000 Service Pack 4:

http://www.microsoft.com/downloads/details.aspx?FamilyId=3CFC32FC-85CA-4EDA-890D-5E359F5F0019

Microsoft Internet Explorer 6 for Windows XP Service Pack 2:

http://www.microsoft.com/downloads/details.aspx?FamilyId=8B321744-B55E-4696-8B2C-B1D31672DA06

Microsoft Internet Explorer 6 for Windows XP Professional x64 Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=8D841D1B-D0B1-46AF-87BD-7DAA8C31AF39

Microsoft Internet Explorer 6 for Windows Server 2003 and Microsoft Windows Server 2003 Service Pack 1:

http://www.microsoft.com/downloads/details.aspx?FamilyId=3E3A9693-D21B-4214-A16C-3FC22340E600

Microsoft Internet Explorer 6 for Windows Server 2003 for Itanium-based Systems and Windows Server 2003 with SP1 for Itanium-based Systems:

http://www.microsoft.com/downloads/details.aspx?FamilyId=9E3F7A2C-BFE1-48C5-8A8A-64A06BCDF219

Microsoft Internet Explorer 6 for Windows Server 2003 x64 Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=F56065CE-6D28-479B-80A7-E04022454DE9

A restart is required.

The Microsoft advisory is available at:

http://www.microsoft.com/technet/security/bulletin/ms06-072.mspx

Vendor URL:  www.microsoft.com/technet/security/bulletin/ms06-072.mspx (Links to External Site)
Cause:   Access control error, Exception handling error
Underlying OS:   Windows (2000), Windows (2003), Windows (XP)

Message History:   None.


 Source Message Contents

Date:  Tue, 12 Dec 2006 14:14:25 -0500
Subject:  Microsoft Security Bulletin MS06-072: Cumulative Security Update for Internet Explorer (925454)


http://www.microsoft.com/technet/security/bulletin/ms06-072.mspx

CVE-2006-5579
CVE-2006-5581
CVE-2006-5578
CVE-2006-5577
 
 


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