Microsoft Internet Explorer BuildAnimation Memory Corruption Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Internet Explorer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The vulnerability lies in Internet Explorer’s key frame creation and its handling of CSS values. An array containing pointers to CSS values can be manipulated with certain CSS directives forcing MSHTML!BuildAnimation to read beyond the bounds of the array. An attacker can leverage this vulnerability to execute code under the context of the browser process.