1.5.3 Ensure address space layout randomization (ASLR) is enabled (Scored) [SecScan]

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====== 1.5.3 Ensure address space layout randomization (ASLR) is enabled (Scored) ======
=====Profile Applicability=====  
<code>
Level 1 - Server 
Level 1 - Workstation
</code>
=====Description=====
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.
=====Audit===== 
Run the following command and verify output matches:
<Code:bash>
# sysctl kernel.randomize_va_space 
kernel.randomize_va_space = 2
</Code>
=====Remediation===== 
Set the following parameter in the ''/etc/sysctl.conf'' file:
<Code:bash>
kernel.randomize_va_space = 2
</Code>
Run the following command to set the active kernel parameter:
<Code:bash>
# sysctl -w kernel.randomize_va_space=2
</Code>