Buffer Overflow Prevention

To prevent buffer overflow attacks, you are advised to use the address space layout randomization (ASLR) technology to randomize the layout of linear areas, such as heap, stack, and shared library mappings, to make it more difficult for attackers to predict destination addresses and prevent them to directly locating code locations. ASLR can be applied to heap, stack, and memory mapping areas (mmap base addresses, shared libraries, and vDSO pages).

How to enable ASLR:

echo 2 >/proc/sys/kernel/randomize_va_space