Advisory Details

August 12th, 2008

Microsoft Excel COUNTRY Record Memory Corruption Vulnerability

ZDI-08-048
ZDI-CAN-307

CVE ID CVE-2008-3006
CVSS SCORE
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Office Excel
TIPPINGPOINT™ IPS CUSTOMER PROTECTION TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 6296. 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 Country (0x8c) record, user-supplied data may be used in a memory copy operation resulting in memory corruption. If successfully exploited remote control of the affected system can be obtained under the credentials of the currently logged in user.

VENDOR RESPONSE Microsoft has issued an update to correct this vulnerability. More details can be found at:
http://www.microsoft.com/technet/security/bulletin/MS08-043.mspx
DISCLOSURE TIMELINE
  • 2008-04-16 - Vulnerability reported to vendor
  • 2008-08-12 - Coordinated public release of advisory
CREDIT Anonymous
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