Measuring ASLR implementations on modern operating systems

Address Space Layout Randomization (ASLR) is a security technique that uses randomness to conceal regions of virtual memory address space of processes, to increase the effort required to develop reliable exploits. It was introduced in the first decade of the third millennium as a mechanism to stop a dangerous attack vector, known as memory corruption. This paper presents a methodology used to evaluate the effectiveness of this technique, as well as the results of the evaluation of two commonly used operating systems: Microsoft´s Windows 7 and Canonical´s Ubuntu Linux 10.10, both in the 32-bits and 64-bits versions.