Microsoft Security Bulletin (MS00-056)
Patch Available for "Microsoft Office HTML Object Tag" Vulnerability Originally posted: August 09, 2000
Microsoft has released a patch that eliminates a security vulnerability in certain Microsoft(r) Office 2000 products. The vulnerability could allow a user to construct a HyperText Markup Language (HTML) file that, when read, would crash a Microsoft Office 2000 application or potentially run arbitrary or malicious code.
Frequently asked questions regarding this vulnerability and the patch can be found at http://www.microsoft.com/technet/security/bulletin/fq00-056.asp
Microsoft Office 2000 applications are capable of reading HTML files saved as Office documents. A malformed data object tag embedded in one of these documents could cause the Office application to crash and allow arbitrary code to be executed.
In order for this behavior to occur, a malicious user would need to entice a user into opening the malformed Office document. Word 2000 users can protect themselves from opening malformed HTML documents within Word by disabling "Confirm conversion at Open" from the Tools-Options-General tab. In addition, Outlook users who have applied the Outlook Security Update will be prompted before opening web hosted or mail-borne Office documents.
(These products ship as part of the Office 2000 suite and as stand-alone products)
Note: Previous versions of these products are not affected by this vulnerability.
Note: Office 2000 products other than those specifically listed above are not affected by this vulnerability.
Note: Office 2000 SR-1 is required before this patch can be applied.
Note: Additional security patches are available at the Microsoft Download Center
Please see the following references for more information related to this issue. - Frequently Asked Questions: Microsoft Security Bulletin MS00-056, http://www.microsoft.com/technet/security/bulletin/fq00-056.asp - Microsoft Knowledge Base (KB) article Q269880, http://www.microsoft.com/technet/support/kb.asp?ID=269880 - Microsoft TechNet Security website, http://www.microsoft.com/technet/security/default.asp
This is a fully supported patch. Information on contacting Microsoft Product Support Services is available at http://support.microsoft.com/support/contact/default.asp.
Microsoft thanks Jesper M. Johansson for reporting this issue to us and working with us to protect customers.
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