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Article ID: 818529 - Last Review: November 7, 2007 - Revision: 8.6

MS03-020: June, 2003, Cumulative Patch for Internet Explorer

View products that this article applies to.

Technical Update

June 5, 2003: This article was revised to add additional information to the "Known Issues" section. Also, the "Installation Information" section was revised to correct the registry information that you can use to confirm that the update that is described in this article is installed on computers that are not running Windows Server 2003.

June 12, 2003: This article was revised to add a note to the "Summary" section to indicate that this patch also sets the Kill bit on several ActiveX controls.

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SUMMARY
MORE INFORMATION

SUMMARY

Microsoft has released a cumulative patch for Internet Explorer. This cumulative patch includes updates for the issues that are described in the following Microsoft Knowledge Base article:

813489 (http://support.microsoft.com/kb/813489/EN-US/ ) MS03-015: April, 2003, Cumulative Patch for Internet Explorer

This cumulative patch also addresses the following newly discovered vulnerabilities:

There is a buffer-overrun vulnerability in Urlmon.dll that occurs because Internet Explorer does not correctly determine an object type that is returned from a Web server. An attacker might be able to exploit this vulnerability to run arbitrary code on your computer. Simply visiting an attacker's Web site might permit the attacker to exploit the vulnerability without any other action on your part. An attacker can also create an HTML e-mail message that tries to exploit this vulnerability.
There is a flaw in Shdocvw.dll that does not implement an appropriate block on a file-download dialog box. An attacker might be able to exploit this vulnerability to run arbitrary code on your computer. Simply visiting an attacker's Web site might permit the attacker to exploit the vulnerability without any other action on your part. An attacker can also create an HTML e-mail message that tries to exploit this vulnerability.

To exploit these flaws, an attacker must host a malicious Web site that contains a Web page that is designed to exploit this specific vulnerability. The attacker then must persuade users to visit the site. To use the HTML e-mail message attack vector, the attacker must create a specially formed HTML e-mail message and send it to the recipients.

Notes

As with the previous Internet Explorer cumulative patch that was released with bulletin MS02-015 (813489), this cumulative patch also sets the "Kill" bit on the following ActiveX controls:

Collapse this tableExpand this table

Description	File name	CLSID	Reference
Microsoft HTML Help control	Hhctrl.ocx	ADB880A6-D8FF-11CF-9377-00AA003B7A11	323255 (http://support.microsoft.com/kb/323255/EN-US/ )
ActiveX Plugin control	Plugin.ocx	06DD38D3-D187-11CF-A80D-00C04FD74AD8	813489 (http://support.microsoft.com/kb/813489/EN-US/ )
DirectX Files Viewer control	XWeb.ocx	{970C7E08-05A7-11D0-89AA-00A0C9054129}	810202 (http://support.microsoft.com/kb/810202/EN-US/ )

For additional information about the Kill bit, click the following article number to view the article in the Microsoft Knowledge Base:

240797 (http://support.microsoft.com/kb/240797/EN-US/ ) How to Stop an ActiveX Control from Running in Internet Explorer

Because this patch sets the Kill bit on the Microsoft HTML Help control, you may experience broken links in Help if you have not installed the updated HTML Help control from Microsoft Knowledge Base article 811630. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
811630 (http://support.microsoft.com/kb/811630/EN-US/ ) HTML Help Update to Limit Functionality When It Is Invoked with the window.showHelp( ) Method
As with the previous Internet Explorer cumulative patches that were released with bulletins MS03-004 (810847) and MS02-015 (813489), this cumulative patch causes the window.showHelp method to stop functioning if you have not applied the HTML Help update. If you have installed the updated HTML Help control from Microsoft Knowledge Base article 811630, you can still use HTML Help functionality after you apply this update. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
811630 (http://support.microsoft.com/kb/811630/EN-US/ ) HTML Help Update to Limit Functionality When It Is Invoked with the window.showHelp( ) Method

For more information about this patch, visit the following Microsoft Web site:

http://www.microsoft.com/technet/security/bulletin/MS03-020.mspx (http://www.microsoft.com/technet/security/bulletin/MS03-020.mspx)

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MORE INFORMATION

Download Information

To download and install this update, visit the Microsoft Windows Update Web site, and then install critical update 818529:

http://windowsupdate.microsoft.com (http://windowsupdate.microsoft.com)

Administrators can download this update from the Microsoft Download Center or from the Windows Update Catalog to deploy to multiple computers. If you want to obtain this update to install later on one or more than one computer, search for this article ID number by using the Advanced Search Options feature in the Windows Update Catalog. For more information about how to download updates from the Windows Update Catalog, click the following article number to view the article in the Microsoft Knowledge Base:

323166 (http://support.microsoft.com/kb/323166/ ) How to download updates that include drivers and hotfixes from the Windows Update Catalog

To download this update from the Microsoft Download Center, visit the following Microsoft Web site:

http://www.microsoft.com/windows/ie/ie6/downloads/critical/818529/default.mspx (http://www.microsoft.com/windows/ie/ie6/downloads/critical/818529/default.mspx)

For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 (http://support.microsoft.com/kb/119591/EN-US/ ) How to Obtain Microsoft Support Files from Online Services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file.

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Installation Information

You must be logged on as an administrator to install this update. To download and install this update, visit the Windows Update Web site and install critical update 818529:

http://windowsupdate.microsoft.com (http://windowsupdate.microsoft.com)

To install a downloaded version of this update, run the Q818529.exe file that you downloaded by using the appropriate setup switches. Administrators can deploy this update by using Microsoft Software Update Services (SUS). For additional information about SUS, click the following article number to view the article in the Microsoft Knowledge Base:

810796 (http://support.microsoft.com/kb/810796/ ) Software Update Services Overview white paper available

To verify that this update has been installed on your computer, use any of the following methods:

Confirm that Q818529 is listed in the Update Versions field in the About Internet Explorer dialog box. Note that you cannot use this method on Windows Server 2003 or on Windows XP 64-Bit Edition Version 2003 because the Update Versions field is not updated by the package for these operating systems.
Compare the versions of the updated files on your computer to the files that are listed in the "File Information" section in this article.
Confirm that the following registry entries exist.

Windows Server 2003 and Windows XP 64-Bit Edition Version 2003:
Confirm the Installed DWORD value with a data value of 1 in the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Hotfix\KB818529
All other versions of Windows:
Confirm the IsInstalled DWORD value with a data value of 1 in the following registry key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Active Setup\Installed Components\{f5de1b93-9d38-416b-b09e-aa85a8e84309}

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Prerequisites

Microsoft has tested the versions of Windows and the versions of Internet Explorer that are listed in this article to assess whether they are affected by these vulnerabilities, and to confirm that the update that is described in this article addresses these vulnerabilities.

To install the Internet Explorer 6 for Windows Server 2003 versions of this update, you must be running Internet Explorer 6 (version 6.00.3790.0000) on Windows Server 2003 (32-bit or 64-bit), or on Windows XP 64-Bit Edition Version 2003.

To install the Internet Explorer 6 Service Pack 1 (SP1) versions of this update, you must be running Internet Explorer 6 SP1 (version 6.00.2800.1106) on Windows XP 64-Bit Edition Version 2002, Windows XP SP1, Windows XP, Windows 2000 Service Pack 2 (SP2), Windows 2000 Service Pack 3 (SP3) , Windows NT 4.0 Service Pack 6a (SP6a), Windows Millennium Edition (Me), or Windows 98 Second Edition.

To install the Internet Explorer 6 version of this update, you must be running Internet Explorer 6 (version 6.00.2600.0000) on Windows XP.

To install the Internet Explorer 5.5 version of this update, you must be running Internet Explorer 5.5 SP2 (version 5.50.4807.2300) on Windows 2000 SP2, Windows 2000 SP3, Windows NT 4.0 SP6a, Windows Millennium Edition, or Windows 98 Second Edition.

To install the Internet Explorer 5.01 version of this update, you must be running Internet Explorer 5.01 SP3 (version 5.00.3502.1000) on Windows 2000 SP3.

Note Versions of Windows and versions of Internet Explorer that are not listed in this article are either in the extended phase of the product life cycle or no longer supported. Although you can install some of the update packages that are described in this article on these versions of Windows and Internet Explorer, Microsoft has not tested these versions to assess whether they are affected by these vulnerabilities, or to confirm that the update that is described in this article addresses these vulnerabilities. Microsoft recommends that you upgrade to a supported version of Windows and Internet Explorer, and then apply the appropriate update. If you are running a version of Windows or of Internet Explorer that is in the extended phase of the product life cycle and you have an Extended Support Contract, contact your Technical Account Manager (TAM) or Applications Development Consultant (ADC) for information about an update for your configuration. For additional information about how to determine which version of Internet Explorer you are running, click the following article number to view the article in the Microsoft Knowledge Base:

164539 (http://support.microsoft.com/kb/164539/EN-US/ ) How to Determine Which Version of Internet Explorer Is Installed

For additional information about support lifecycles for Windows components, visit the following Microsoft Web site:

http://support.microsoft.com/gp/lifesupsps (http://support.microsoft.com/gp/lifesupsps)

For additional information about how to obtain Internet Explorer 6 SP1, click the following article number to view the article in the Microsoft Knowledge Base:

328548 (http://support.microsoft.com/kb/328548/EN-US/ ) How to Obtain the Latest Service Pack for Internet Explorer 6

For additional information about how to obtain the latest service pack for Internet Explorer 5.5, click the following article number to view the article in the Microsoft Knowledge Base:

276369 (http://support.microsoft.com/kb/276369/EN-US/ ) How to Obtain the Latest Service Pack for Internet Explorer 5.5

For additional information about how to obtain Internet Explorer 5.01 SP3, click the following article number to view the article in the Microsoft Knowledge Base:

267954 (http://support.microsoft.com/kb/267954/EN-US/ ) How to Obtain the Latest Internet Explorer 5.01 Service Pack

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Restart Requirements

For the Internet Explorer 6 and Internet Explorer 6 SP1 packages, you must restart your computer to complete the installation of this update. For all other versions of this package, you must restart your computer and then log on as an administrator to complete the installation of this update.

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Previous Update Status

This update supercedes the MS03-015: April, 2003, Cumulative Patch for Internet Explorer update (813489).

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Setup Switches

The Windows Server 2003 (this includes Windows XP 64-Bit Edition Version 2003) versions of this patch support the following Setup switches:

/? Show the list of installation switches.
/u Use Unattended mode.
/f Force other programs to quit when the computer shuts down.
/n Do not back up files for removal.
/o Overwrite OEM files without prompting.
/z Do not restart when installation is complete.
/q Use Quiet mode (no user interaction).
/l List installed hotfixes.
/x Extract the files without running Setup.

For example, to install the patch without any user intervention, use the following command:

windowsserver2003-kb818529-x86-enu.exe /u /q

To install the patch without forcing the computer to restart, use the following command:

windowsserver2003-kb818529-x86-enu.exe /z

Note You can combine these switches in one command.

For information about how to deploy this patch by using Software Update Services, visit the following Microsoft Web site:

http://technet.microsoft.com/en-us/wsus/bb466201.aspx (http://technet.microsoft.com/en-us/wsus/bb466201.aspx)

The other update packages for this patch support the following switches:

/q Specifies Quiet mode or suppresses messages when the files are being extracted.
/q:u Specifies User-Quiet mode, which presents some dialog boxes to the user.
/q:a Specifies Administrator-Quiet mode, which does not present any dialog boxes to the user.
/t: path Specifies the target folder for extracting files.
/c Extracts the files without installing them. If /t: path is not specified, you are prompted for a target folder.
/c: path Specifies the path and name of the Setup .inf file or the .exe file.
/r:n Never restarts the computer after installation.
/r:i Prompts the user to restart the computer if a restart is required, except when used with the /q:a switch.
/r:a Always restarts the computer after installation.
/r:s Restarts the computer after installation without prompting the user.
/n:v No version checking. Use this switch with caution to install the update on any version of Internet Explorer.

For example, to install the update without any user intervention and not to force the computer to restart, use the following command:

q818529.exe /q:a /r:n

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File Information

The English version of this fix has the file attributes (or later) that are listed in the following tables. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

The following files are installed in the %Windir%\System folder in Windows 98 Second Edition and Windows Millennium Edition. They are installed in the %Windir%\System32 folder in Windows NT 4.0, Windows 2000, Windows XP, and Windows Server 2003.

Internet Explorer 6 (32-Bit) for Windows Server 2003 and Windows XP 64-Bit Edition Version 2003

   Date         Time   Version      Size       File name
   -------------------------------------------------------
   28-May-2003  01:46  6.0.3790.41  1,361,408  Shdocvw.dll
   28-May-2003  01:46  6.0.3790.9     498,176  Urlmon.dll

Internet Explorer 6 (64-Bit) for Windows Server 2003 64-Bit Versions and Windows XP 64-Bit Edition Version 2003

   Date         Time   Version      Size       File name     Platform
   ------------------------------------------------------------------
   28-May-2003  01:41  6.0.3790.41  3,359,744  Shdocvw.dll   IA64
   28-May-2003  01:41  6.0.3790.9   1,271,296  Urlmon.dll    IA64
   28-May-2003  01:54  6.0.3790.41  1,361,408  Wshdocvw.dll  x86
   28-May-2003  01:54  6.0.3790.9     498,176  Wurlmon.dll   x86

Internet Explorer 6 SP1 (32-Bit) for Windows XP SP1, Windows XP, Windows 2000 SP3, Windows 2000 SP2, Windows NT 4.0 SP6a, Windows Millennium Edition, and Windows 98 Second Edition

   Date         Time   Version        Size       File name
   ---------------------------------------------------------
   24-Feb-2003  18:31  6.0.2800.1170  2,787,840  Mshtml.dll
   23-May-2003  17:15  6.0.2800.1203  1,338,880  Shdocvw.dll
   14-Apr-2003  13:25  6.0.2800.1188    483,840  Urlmon.dll

Internet Explorer 6 SP1 (64-Bit) for Windows XP 64-Bit Edition Version 2002

   Date         Time   Version        Size       File name    Platform
   -------------------------------------------------------------------
   24-Feb-2003  17:50  6.0.2800.1170  9,075,200  Mshtml.dll   IA64
   23-May-2003  16:39  6.0.2800.1203  3,648,000  Shdocvw.dll  IA64
   14-Apr-2003  21:02  6.0.2800.1188  1,412,096  Urlmon.dll   IA64

Internet Explorer 6 (32-Bit) for Windows XP

   Date         Time   Version        Size       File name
   ---------------------------------------------------------
   25-Feb-2003  22:19  6.0.2726.2500  2,762,240  Mshtml.dll 
   23-May-2003  02:01  6.0.2722.900      34,304  Pngfilt.dll
   05-Mar-2002  00:09  6.0.2715.400     548,864  Shdoclc.dll
   22-May-2003  22:49  6.0.2729.2200  1,336,320  Shdocvw.dll
   23-May-2003  02:01  6.0.2715.400     109,568  Url.dll    
   14-Apr-2003  14:02  6.0.2728.1400    481,280  Urlmon.dll 
   06-Jun-2002  17:38  6.0.2718.400     583,168  Wininet.dll

Internet Explorer 5.5 SP2 for Windows 2000 SP3, Windows 2000 SP2, Windows NT 4.0 SP6a, Windows Millennium Edition, and Windows 98 Second Edition

   Date         Time   Version         Size       File name
   ----------------------------------------------------------
   25-Feb-2003  22:04  5.50.4926.2500  2,759,440  Mshtml.dll 
   17-Oct-2002  00:01  5.50.4922.900      48,912  Pngfilt.dll
   22-May-2003  23:09  5.50.4929.2200  1,149,200  Shdocvw.dll
   05-Mar-2002  01:53  5.50.4915.500      84,240  Url.dll    
   14-Apr-2003  15:10  5.50.4928.1400    451,344  Urlmon.dll 
   06-Jun-2002  21:27  5.50.4918.600     481,552  Wininet.dll

Internet Explorer 5.01 SP3 for Windows 2000 SP3

   Date         Time   Version        Size       File name 
   ---------------------------------------------------------
   28-Mar-2003  22:20  5.0.3516.2800  2,357,008  Mshtml.dll 
   14-Oct-2002  15:28  5.0.3510.1100     48,912  Pngfilt.dll
   23-May-2003  17:47  5.0.3518.2300  1,099,536  Shdocvw.dll
   05-Mar-2002  01:53  5.50.4915.500     84,240  Url.dll    
   14-Apr-2003  14:25  5.0.3517.1400    451,856  Urlmon.dll 
   07-Jun-2002  23:56  5.0.3506.1000    461,584  Wininet.dll

Note Because of file dependencies and Setup or removal requirements, these updates may also contain additional files.

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Removal Information

To remove this update, use the Add or Remove Programs tool (or the Add/Remove Programs tool) in Control Panel. Click Internet Explorer Q818529, and then click Change/Remove (or click Add/Remove ).

On Windows Server 2003 and Windows XP 64-Bit Edition Version 2003, system administrators can use the Spunist.exe utility to remove this patch. The Spuninst.exe program file is located in the %Windir%\$NTUninstallKB818529$\Spuninst folder. This utility supports the following Setup switches:

/? Show the list of installation switches.
/u Use Unattended mode.
/f Force other programs to quit when the computer shuts down.
/z Do not restart when installation is complete.
/q Use Quiet mode (no user interaction).

On all other versions of Windows, system administrators can use the Ieuninst.exe utility to remove this update. The Ieuninst.exe program file is located in the %Windir% folder and supports the following command-line switches:

/? Show the list of supported switches.
/z Do not restart when installation is complete.
/q Use Quiet mode (no user interaction).

For example, to remove this update quietly, use the following command:

c:\windows\ieuninst /q c:\windows\inf\q818529.inf

Note This command line assumes that Windows is installed in the C:\Windows folder.

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Known Issues

On a Windows 2000-based or on a Windows XP-based computer, you can install the 813489 critical update after you install the 818529 critical update. If you do this, the updated files in the 818529 critical update are replaced by the older files in the 813489 critical update. To resolve this issue, reinstall the 818529 critical update.
You can install the Internet Explorer 5.5 SP2 version of the 818529 critical update on a Windows 2000 SP3-based computer that is running Internet Explorer 5.01 SP3. To resolve this issue, remove the Internet Explorer 5.5 SP2 version of the 818529 critical update, and then install the Internet Explorer 5.01 SP3 version of the 818529 critical update. Administrators can use the Ieuninst.exe tool to remove the Internet Explorer 5.5 SP2 update as described in the "Removal Information" section of this article. For example, to remove the update quietly, use the following command:
c:\windows\ieuninst /q c:\windows\inf\q818529.inf
Note This command assumes that Windows is installed in the C:\Windows folder.
After you remove the 818529 critical update, you cannot remove previous cumulative updates for Internet Explorer (such as the 813489 critical update). This behavior is by design. Removing is supported only for the last cumulative update that you installed.
For additional information about known issues that may occur after you install this update, click the following article number to view the article in the Microsoft Knowledge Base:
325192 (http://support.microsoft.com/kb/325192/EN-US/ ) Issues After You Install Updates to Internet Explorer or Windows

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