The Research and Implementation of Defense of Buffer Overflow Virtual Machine;

Research on Principle and Defense of Buffer Overflow Attacks;

Combining with the principles of the produce to buffer overflow attack,this paper analyzes the structure of buffer overflow attack codes,and describes the Snort rules used for buffer overflow attack inspection.

Undoubtedly, in this networked information era, these bugs make the Buffer Overflow Attack very easy propagate, it threatens the systematic security greatly.

This paper analyzes the principle of the buffer overflow attacks,discusses the modes based on buffer overflow attacks,implantation code and general laws so as to put forward some preventive strategies and measures.

In this paper,from programming point of view,the buffer overflow attacks are analyzed and the methods of avoiding buffer overflow at the stage of source code are introduced.

This paper analyses the most commonly used methods on buffer overflow defense and presents a new detecting method of buffer overflow attacks based on address confirmation ,starting by analyzing the principle of buffer overflow attacks.

It is a kind of common technique for a hacker to break into remote systems and to get root privileges using buffer overflow on UNIX suid programs.

Finally we present a software RAP (Return Address Protector) to detect buffer overflow attacks (BOFA) and protect the system from being attacked by BOFAs.