Microsoft Internet Explorer VML TextBox Use-After-Free Remote Code Execution Vulnerability

ID ZDI-13-098
Type zdi
Reporter Anonymous
Modified 2013-11-09T00:00:00


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 specific flaw exists within the usage of a VML textbox. When a dynamic style is defined, it can remove the textbox resulting in a use-after-free condition. An attacker can leverage this situation to execute code under the context of the user running the browser.