CVE-2008-0113

Una vulnerabilidad no especificada en Microsoft Office Excel Viewer 2003 hasta SP3, permite a atacantes remotos asistidos por el usuario ejecutar código arbitrario por medio de un documento de Excel con comentarios de celda malformada que desencadenan la corrupción de memoria a partir de un "allocation error," también se conoce como "Microsoft Office Cell Parsing Memory Corruption Vulnerability."

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Office. Exploitation requires that the attacker coerce the target into opening a malicious .XLS file.
The specific flaw exists within the parsing of malformed cell comments. When Excel encounters a malformed record it attempts to rebuild the broken meta-data. A flaw in this rebuilding process allows the user to specify critical data offsets eventually leading to code execution under the logged in users credentials.