Details

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 /etc/sysctl.d/* file: kernel.randomize_va_space = 2 Run the following command to set the active kernel parameter: # sysctl -w kernel.randomize_va_space=2

Supportive Information

The following resource is also helpful.

• https://workbench.cisecurity.org/files/2608

This security hardening control applies to the following category of controls within NIST 800-53: System and Communications Protection, System and Information Integrity.This control applies to the following type of system Unix.

References

• 800-53|SC-39
• 800-53|SI-16
• CSCv7|8.3

Source

• Tenable.com/audits