Advisory Details

October 10th, 2006

Microsoft Office Excel File Format DATETIME Record Parsing Vulnerability

ZDI-06-033
ZDI-CAN-059

CVE ID CVE-2006-2387
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 4746. 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. Exploitation requires that the attacker coerce the target user 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 malformed DATETIME records, user-supplied data may be insecurely referenced thereby leading to the eventual execution of arbitrary code.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
http://www.microsoft.com/technet/security/Bulletin/MS06-059.mspx
DISCLOSURE TIMELINE
  • 2006-06-15 - Vulnerability reported to vendor
  • 2006-10-10 - Coordinated public release of advisory
CREDIT Manuel Santamarina Suarez
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