Microsoft Internet Explorer applet Element Use-After-Free Remote Code Execution Vulnerability

2015-07-14T00:00:00
ID ZDI-15-332
Type zdi
Reporter 4cbad7dc77d1a1af7d66b5ded6cd92a5
Modified 2015-11-09T00:00:00

Description

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 relates to how Internet Explorer processes the HTML applet elements. By manipulating a document's elements an attacker can force a CMarkup object in memory to be reused after it has been freed. An attacker can leverage this vulnerability to execute code under the context of the current process.