Microsoft Internet Explorer CMarkup Use-After-Free Remote Code Execution Vulnerability

2013-07-26T00:00:00
ID ZDI-13-173
Type zdi
Reporter Bluesea
Modified 2013-11-09T00:00:00

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 specific flaw exists within the Print command. A CMarkup Element can be freed and used afterwards within the SaveToTempFile function. An attacker can leverage this situation to execute code under the context of the user running the browser.