InformationAddress 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.
SolutionSet the following parameter in /etc/sysctl.conf or a /etc/sysctl.d/* file:
# printf '
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