-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Symantec Vulnerability Research http://www.symantec.com/research Security Advisory Advisory ID : SYMSA-2006-007 Advisory Title: Microsoft Office Malformed String Parsing Vulnerability Author : Elia Florio / elia_florio@xxxxxxxxxxxx Release Date : 07-11-2006 Application : Microsoft Office 2000, Office XP (2002), Office 2003 Platform : Windows Severity : Remotely exploitable / User access Vendor status : Duplicated and verified by Microsoft, patch available CVE Number : CVE-2006-1540 Reference : http://www.securityfocus.com/bid/18889 Overview: There exists an overflow condition in Microsoft Office when a malformed string included in an Office file is parsed by any of the affected Office applications. Details: The problem resides in the code of MSO.DLL, a shared library used by Office applications, so the vulnerability can be exploited using different attack vectors. For example, the vulnerability can be exploited using a malformed Excel 2003 file. By changing the size of the Unicode "Sheet Name" string with an incorrect size, it is possible to generate an integer overflow condition. Excel 2003 will crash while opening the malformed file due to an access violation error with an invalid value of EAX=0xFFFFFFFC. MOV EDX,DWORD PTR DS:[EAX-4] ADD EAX,-4 ADD EDX,4 Vendor Response: The above vulnerability was addressed for the affected platforms via Microsoft Security Bulletin MS06-38. If there are any further questions about this statement, please contact secure@xxxxxxxxxxxxxx Recommendation: Follow your organization's testing procedures before applying patches or workarounds. Customers should apply Microsoft's update as soon as possible. Common Vulnerabilities and Exposures (CVE) Information: The Common Vulnerabilities and Exposures (CVE) project has assigned the following names to these issues. These are candidates for inclusion in the CVE list (http://cve.mitre.org), which standardizes names for security problems. CVE-2006-1540 - -------Symantec Vulnerability Research Advisory Information------- For questions about this advisory, or to report an error: research@xxxxxxxxxxxx For details on Symantec's Vulnerability Reporting Policy: http://www.symantec.com/research/Symantec-Responsible-Disclosure.pdf Symantec Vulnerability Research Advisory Archive: http://www.symantec.com/research/ Symantec Vulnerability Research GPG Key: http://www.symantec.com/research/Symantec_Consulting_Services_Advisories_GPG.asc - -------------Symantec Product Advisory Information------------- To Report a Security Vulnerability in a Symantec Product: secure@xxxxxxxxxxxx For general information on Symantec's Product Vulnerability reporting and response: http://www.symantec.com/security/ Symantec Product Advisory Archive: http://www.symantec.com/avcenter/security/SymantecAdvisories.html Symantec Product Advisory PGP Key: http://www.symantec.com/security/Symantec-Vulnerability-Management-Key.asc - --------------------------------------------------------------- Copyright (c) 2006 by Symantec Corp. Permission to redistribute this alert electronically is granted as long as it is not edited in any way unless authorized by Symantec Consulting Services. Reprinting the whole or part of this alert in any medium other than electronically requires permission from cs_advisories@xxxxxxxxxxxxx Disclaimer The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information. Symantec, Symantec products, and Symantec Consulting Services are registered trademarks of Symantec Corp. and/or affiliated companies in the United States and other countries. All other registered and unregistered trademarks represented in this document are the sole property of their respective companies/owners. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (Cygwin) iD8DBQFEspITuk7IIFI45IARAiJyAJ4gvZGmSFL5B+ZOpCYrq3pXQrH6WgCgjDJu c6RMB/od64/cLbHSwy3EC/w= =MYz8 -----END PGP SIGNATURE-----
