Microsoft Internet Explorer is prone to a remote code-execution vulnerability.

Attackers can exploit this vulnerability to execute arbitrary code in the context of the user running the application. Successful exploits will compromise the application and possibly the underlying computer. Failed attacks will cause denial-of-service conditions.

This Vunerability will be easy exploit thorugh metasploit modules. This IE_XML exploits a vulnerability in the XML handling code of Internet Explorer. In order to execute code reliably, this module uses the .NET DLLmemory technique pioneered by Alexander Sotirov and Mark Dowd. This method is used to create a fake vtable at a known location with all methods pointing to our payload. Since the .text segment of the .NET DLL is non-writable, a prefixed code stub is used to copy the payload into a new memory segment and continue execution from there. This code is a very early version of what the final implementation will be and the API and this module will continue to be updated as progress continues.

In computer science, session hijacking refers to the exploitation of a valid computer session to gain unauthorized access to information or services in a computer system. In particular, it is used to refer to the theft of a magic cookie used to authenticate a user to a remote server. It has particular relevance to web developers, as the HTTP cookies used to maintain a session on many web sites can be easily stolen by an attacker using an intermediary computer or with access to the saved cookies on the victim's computer.

TCP session hijacking is when a hacker takes over a TCP session between two machines. Since most authentication only occurs at the start of a TCP session, this allows the hacker to gain access to a machine.

A popular method is using source-routed IP packets. This allows a hacker at point A on the network to participate in a conversation between B and C by encouraging the IP packets to pass through its machine.

If source-routing is turned off, the hacker can use "blind" hijacking, whereby it guesses the responses of the two machines. Thus, the hacker can send a command, but can never see the response. However, a common command would be to set a password allowing access from somewhere else on the net.

A hacker can also be "inline" between B and C using a sniffing program to watch the conversation. This is known as a "man-in-the-middle attack".

In this video from learn security online will show us session hijacking using a tool ferret and hamster.