1.5.3 Ensure address space layout randomization (ASLR) is enabled

Information

Address space layout randomization (ASLR) is an exploit mitigation technique which randomly arranges the address space of key data areas of a process.

Rationale:

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

See Also

https://workbench.cisecurity.org/files/3399

Item Details

Category: SYSTEM AND INFORMATION INTEGRITY

References: 800-53|SI-16, CSCv6|8.4, CSCv7|8.3

Plugin: Unix

Control ID: cf91d9679e463bf73fe845dc7873af9106fd7c8c66832ea4f66cfa9e1d0b9a7b