Microsoft KB Archive/293338

= Buffer Overrun Occurs When You Start Winhlp32.exe Under NTSD =

Article ID: 293338

Article Last Modified on 9/27/2007

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APPLIES TO


 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Service Pack 2
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Service Pack 2

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This article was previously published under Q293338



SYMPTOMS
There is a buffer overrun in Winhelp32.exe. A malicious user can exploit this buffer overrun to run code in the user's security context. This permits the malicious user to perform any actions that a legitimate user can perform. A malicious user can exploit this vulnerability by using a malicious Web page or by using an HTML-based e-mail message.

By default, the HTML exploit is blocked if you are using Microsoft Outlook Express 6 or Microsoft Outlook 2002, or if you installed the Outlook E-mail Security Update in Microsoft Outlook 98 or Microsoft Outlook 2000.



RESOLUTION
To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack



STATUS
Microsoft has confirmed that this is a problem in Microsoft Windows 2000. This problem was first corrected in Windows 2000 Service Pack 3.



MORE INFORMATION
Microsoft thanks Mark Litchfield of Next Generation Security Software Ltd. for reporting this issue.

Additional query words: kbMgmtAdmin

Keywords: kbdownload kbdownload kbbug kbenv kbfix kbsecurity kbsysadmin kbwin2000sp3fix KB293338

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