Advisory Details

October 14th, 2008

Microsoft Office Excel BIFF File Format Parsing Stack Overflow Vulnerability

CVE ID	CVE-2008-3471
CVSS SCORE
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Office Excel
TREND MICRO CUSTOMER PROTECTION	Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['6465']. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Office Excel. Exploitation requires that the victim to open the malformed BIFF (.xls) document. The specific flaw exists within the parsing of the BIFF file format used by Microsoft Excel. During the processing of a malformed record, user-supplied data is copied into a stack-based buffer using a size that is calculated using contents from the record.
ADDITIONAL DETAILS	Microsoft has issued an update to correct this vulnerability. More details can be found at: http://www.microsoft.com/technet/security/bulletin/MS08-057.mspx
DISCLOSURE TIMELINE	2008-05-23 - Vulnerability reported to vendor 2008-10-14 - Coordinated public release of advisory
CREDIT	wushi & ling of team509

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