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The Photon operating system must implement address space layout randomization (ASLR) to protect its memory from unauthorized code execution.


Overview

Finding ID Version Rule ID IA Controls Severity
V-239140 PHTN-67-000069 SV-239140r675228_rule Medium
Description
ASLR makes it more difficult for an attacker to predict the location of attack code he or she has introduced into a process's address space during an attempt at exploitation. Additionally, ASLR also makes it more difficult for an attacker to know the location of existing code to repurpose it using return-oriented programming techniques.
STIG Date
VMware vSphere 6.7 Photon OS Security Technical Implementation Guide 2022-01-03

Details

Check Text ( C-42351r675226_chk )
At the command line, execute the following command:

# cat /proc/sys/kernel/randomize_va_space

If the value of "randomize_va_space" is not "2", this is a finding.
Fix Text (F-42310r675227_fix)
Open /etc/sysctl.d/50-security-hardening.conf with a text editor.

Ensure that the "randomize_va_space" is uncommented and set to the following:

kernel.randomize_va_space=2

At the command line, execute the following command:

# sysctl --system