Information
Address space layout randomization (ASLR) is an exploit mitigation technique which randomly arranges the address space of key data areas of a process.
Randomly placing virtual memory regions will make it difficult to write memory page exploits as the memory placement will be consistently shifting.
Solution
Set the following parameter in /etc/sysctl.conf or a file in /etc/sysctl.d/ ending inconf :
- kernel.randomize_va_space = 2
Example:
# printf "%s
" "kernel.randomize_va_space = 2" >> /etc/sysctl.d/60-kernel_sysctl.conf
Run the following command to set the active kernel parameter:
# sysctl -w kernel.randomize_va_space=2
Note: If these settings appear in a canonically later file, or later in the same file, these settings will be overwritten