1) Too low entropy.
2) Non-uniform distribution.
3) Correlation between objects.
The new technique for exploiting the correlation and weakness is presented, which can bypass full ASLR Linux in 64-bit architecture system in less then a second. A deep analysis of these weaknesses enabled to propose new ASLR design, a concept named as ASLR-NG. This will overcome all the current ASLR’s weaknesses including PaX solution. Finally presents ASLRA, a tool to analyze the ASLR entropy of Linux.