Advisory Details

May 8th, 2007

Microsoft Excel BIFF File Format Named Graph Record Parsing Stack Overflow Vulnerability

ZDI-07-026
ZDI-CAN-131

CVE ID CVE-2007-0215
CVSS SCORE
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Office Excel 2000
Office Excel 2002
Office Excel 2003
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 5330. 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 attacker coerce the target into opening a malicious .XLS file.

The specific flaw exists within the parsing of the BIFF file format used by Microsoft Excel. During the processing of a malformed Named Graph record, user-supplied data may be copied to the stack unchecked thereby leading to an exploitable stack-based buffer overflow.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
http://www.microsoft.com/technet/security/bulletin/ms07-023.mspx
DISCLOSURE TIMELINE
  • 2006-11-16 - Vulnerability reported to vendor
  • 2007-05-08 - Coordinated public release of advisory
CREDIT Manuel Santamarina Suarez
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