CVE-2017-8631

Existe una vulnerabilidad de ejecución remota de código en Excel Services, Microsoft Excel 2007 Service Pack 3, Microsoft Excel 2010 Service Pack 2, Microsoft Excel 2013 Service Pack 1, Microsoft Excel 2013 RT Service Pack 1, Microsoft Excel 2016, Microsoft Office Web Apps 2013, Microsoft Office Compatibility Pack Service Pack 3, Microsoft Excel Web App 2013 Service Pack 1, Microsoft Excel Viewer 2007 Service Pack 3 y Office Online Server cuando no se gestionan correctamente los objetos en la memoria. Esto también se conoce como "Microsoft Office Memory Corruption Vulnerability". El ID de este CVE es diferente de CVE-2017-8630, CVE-2017-8632, y CVE-2017-8744.

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Office Excel. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the processing of Excel Binary files. Crafted data within an xlsb file can trigger an overflow of a heap-based buffer. An attacker can leverage this vulnerability to execute arbitrary code under the context of the current process.