Security Bulletin (MS00-056)

2000-08-10T00:00:00
ID SECURITYVULNS:DOC:530
Type securityvulns
Reporter Securityvulns
Modified 2000-08-10T00:00:00

Description

Microsoft Security Bulletin (MS00-056)


Patch Available for "Microsoft Office HTML Object Tag" Vulnerability Originally posted: August 09, 2000

Summary

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

Issue

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.

Affected Software Versions

  • Microsoft Word 2000
  • Microsoft Excel 2000
  • Microsoft PowerPoint 2000

(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.

Patch Availability

  • Microsoft Word 2000, Excel 2000, PowerPoint 2000: http://officeupdate.microsoft.com/2000/downloadDetails/Of9data.htm

Note: Office 2000 SR-1 is required before this patch can be applied.

Note: Additional security patches are available at the Microsoft Download Center

More Information

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

Obtaining Support on this Issue

This is a fully supported patch. Information on contacting Microsoft Product Support Services is available at http://support.microsoft.com/support/contact/default.asp.

Acknowledgments

Microsoft thanks Jesper M. Johansson for reporting this issue to us and working with us to protect customers.

Revisions

  • August 09, 2000: Bulletin Created.

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

(c) 2000 Microsoft Corporation. All rights reserved. Terms of use.