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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2001.035 -- Microsoft Security Bulletin MS01-002 PowerPoint File Parsing Vulnerability 25 January 2001 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: PowerPoint 2000 Vendor: Microsoft Operating System: Windows Impact: Execute Arbitrary Code/Commands Access Required: Remote - --------------------------BEGIN INCLUDED TEXT-------------------- - ---------------------------------------------------------------------- Title: PowerPoint File Parsing Vulnerability Date: January 22, 2001 Software: PowerPoint 2000 Impact: Execution of Arbitrary Code Bulletin: MS01-002 Microsoft encourages customers to review the Security Bulletin at: http://www.microsoft.com/technet/security/bulletin/ms01-002.asp - ---------------------------------------------------------------------- Issue: ====== A parsing routine that is executed when PowerPoint 2000 opens files contains an unchecked buffer. If an attacker inserted specially chosen data into a PowerPoint file and could entice another user into opening the file on his machine, the data would overrun the buffer, causing either of two effects. In the less serious case, overrunning the data would cause PowerPoint to fail, but wouldn't have any other effect. In the more serious case, overrunning the buffer could allow the attacker to cause code of her choice to run on the user's machine. The code could take any action that the user himself could take on the machine. Typically, this would enable the attacker's code to add, change or delete data, communicate with a remote server, or take other actions. Mitigating Factors: =================== - The user would need to be enticed into opening a malformed PowerPoint file Patch Availability: =================== - A patch is available to fix this vulnerability. Please read Security Bulletin MS01-002 at: http://www.microsoft.com/technet/security/bulletin/ms01-002.asp for information on obtaining this patch. Acknowledgment: =============== - Dave Aitel and Frank Swiderski of @Stake (http://www.atstake.com) - ----------------------------------------------------------------------- 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. - --------------------------END INCLUDED TEXT-------------------- This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to use any or all of this information is the responsibility of each user or organisation, and should be done so in accordance with site policies and procedures. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the original authors to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/Information/advisories.html If you believe that your system has been compromised, contact AusCERT or your representative in FIRST (Forum of Incident Response and Security Teams). Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for emergencies. -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key iQCVAwUBOnA1xSh9+71yA2DNAQESSgP/R5YpyhIL6veGl+oAemaDuqTFViJYYELe atG6QxKE7/qmIhZetH8HAqvhdS0+gGtWwywj9SCn4/PtZNlKKG2fpaos1OpP28Qn yFoe9LY6X82FKYGjDfNWQsp79vlsu/JZuTmfMrTXrAMbQHqrU5Yy3j7CEEXpKh8E fGf0zIy1auM= =RH08 -----END PGP SIGNATURE-----