Cyber Security Expo
 
Writing Behind a Buffer by Angelo Rosiello on 24/02/06

In this paper we are going to describe a kind of vulnerability that is known in the literature but also poor documented. In fact, the problem that is going to be analyzed can be reduced to a memory adjacent overwriting attack but usually it is obtained exploiting the last null byte of a buffer, hence we are going to show that the same result is still possible writing behind a buffer, under certain conditions. To fully understand the subject of this article it's necessary to describe the memory organization of running processes, then the memory adjacent overwrite attack, concluding with our analysis.

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