TPTI-08-03: Microsoft Excel Rich Text Memory Corruption Vulnerability

Type securityvulns
Reporter Securityvulns
Modified 2008-03-12T00:00:00


TPTI-08-03: Microsoft Excel Rich Text Memory Corruption Vulnerability March 11, 2008

-- CVE ID: CVE-2008-0116

-- Affected Vendors: Microsoft

-- Affected Products: Microsoft Office Excel 2003 Microsoft Office Excel 2002 Microsoft Office Excel 2000

-- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID 6000. For further product information on the TippingPoint IPS, visit:

-- 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 tag a heap allocation can be adversely controlled. When user supplied data is copied to a heap buffer the resulting data results in a arbitrary memory overwrite. If successfully exploited this could lead to system compromise 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:

-- Disclosure Timeline: 2007-10-17 - Vulnerability reported to vendor 2008-03-11 - Coordinated public release of advisory

-- Credit: This vulnerability was discovered by: * Cody Pierce, TippingPoint DVLabs