The following is a Security Bulletin from the Microsoft Product Security Notification Service. Please do not reply to this message, as it was sent from an unattended mailbox. ******************************** Microsoft Security Bulletin (MS00-002) -------------------------------------- Patch Available for "Malformed Conversion Data" Vulnerability Originally Posted: January 20, 2000 Summary ======= Microsoft has released a patch that eliminates a security vulnerability in a utility that converts Japanese, Korean and Chinese Microsoft(r) Word(r) 5 documents to more-recent formats. The primary shipment vehicles for the utility are the Japanese, Korean and Chinese (both Simplified and Traditional) versions of Word and PowerPoint(r) for Windows. (A comprehensive listing of affected products is provided below) The vulnerability could allow arbitrary code to be executed on a machine that opened a specially-modified Word 5 document using an affected version of the utility. Frequently asked questions regarding this vulnerability can be found at http://www.microsoft.com/security/bulletins/MS00-002faq.asp. Issue ===== Microsoft Office includes a conversion utility that converts older Word documents to more recent formats. The conversion utility for Word 5 documents in East Asian languages (Japanese, Korean, Simplified Chinese and Traditional Chinese) has an unchecked buffer. By using a hexadecimal editor to insert specially-malformed information into a document, a malicious user could cause Word to run code of his or her choice when the document was opened using an affected version of the converter. A Word 5 converter installs by default as part of Word and PowerPoint, and can be installed at user behest as part of a converter pack. However, the vulnerability affects only the East Asian language versions of the converter, and only the Windows versions of them. No other language versions of the converter are affected, and no version of the converter for Macintosh is affected. Affected Software Versions ========================== - Microsoft Converter Pack 2000 for Windows - Microsoft Office 2000 for Windows with Multilanguage Pack - Japanese, Korean, Chinese (Simplified and Traditional) versions of: - Microsoft Word 97, 98 and 2000 for Windows, which is available as a standalone product or as part of: - Office 97, Office 97 Powered by Word 98, Office 2000 for Windows - Works Suite 2000 for Windows - Microsoft PowerPoint 97 and 2000 for Windows, which is available as a standalone product or as part of: - Office 97, Office 97 Powered by Word 98, Office 2000 for Windows Patch Availability ================== - Word 97 or 98, PowerPoint 98: - US: http://officeupdate.microsoft.com/downloaddetails/ww5pkg.htm - Japan: http://officeupdate.microsoft.com/japan/downloaddetails/ MalformedData-97.htm - Korea: http://officeupdate.microsoft.com/korea/downloaddetails/ MalformedData-97.htm - China: http://officeupdate.microsoft.com/china/downloaddetails/ MalformedData-97.htm - Taiwan: http://officeupdate.microsoft.com/taiwan/downloaddetails/ MalformedData-97.htm - Hong Kong: http://officeupdate.microsoft.com/hk/downloaddetails/ MalformedData-97.htm - Converter Pack 2000; Office 2000 with Multilanguage Pack; Word 2000, PowerPoint 2000: - US: http://officeupdate.microsoft.com/2000/downloaddetails/ww5pkg.htm - Japan: http://officeupdate.microsoft.com/japan/downloaddetails/2000/ MalformedData-2K.htm - Korea: http://officeupdate.microsoft.com/korea/downloaddetails/2000/ MalformedData-2K.htm - China: http://officeupdate.microsoft.com/china/downloaddetails/2000/ MalformedData-2K.htm - Taiwan: http://officeupdate.microsoft.com/taiwan/downloaddetails/2000/ MalformedData-2K.htm - Hong Kong: http://officeupdate.microsoft.com/hk/downloaddetails/2000/ MalformedData-2K.htm NOTE: Line breaks have been inserted into the above URLs for readability. 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 MS00-002, http://www.microsoft.com/security/bulletins/MS00-002faq.asp. - Microsoft Knowledge Base (KB) article Q249881, WD: Patch Available for "Malformed Conversion Data" Vulnerability (East Asian Word), http://support.microsoft.com/support/kb/articles/q249/8/81.asp. (Note: It may take 24 hours from the original posting of this bulletin for this KB article to be visible.) - Microsoft Security Advisor web site, http://www.microsoft.com/security/default.asp. Obtaining Support on this Issue =============================== This is a fully supported patch. Information on contacting Microsoft Technical Support is available at http://support.microsoft.com/support/contact/default.asp. Revisions ========= - January 20, 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. 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