Zero Day Initiative Advisory 09-070 – 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. The specific flaw exists within the copy constructor for a specific DOM object. When duplicated, more than one reference can be made of anything assigned to it’s properties. When the variable/object goes out of scope, these properties will be deallocated twice. This results in a heap corruption which can lead to code execution under the context of the current user.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/81973/ZDI-09-070.txt
Source: https://packetstormsecurity.com/files/81973/Zero-Day-Initiative-Advisory-09-070.html