The Photon operating system must implement address space layout randomization (ASLR) to protect its memory from unauthorized code execution.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-256535 | SRG-OS-000433-GPOS-00193 | PHTN-30-000065 | SV-256535r958928_rule | 2024-12-16 | 1 |
Description
ASLR makes it more difficult for an attacker to predict the location of attack code they have introduced into a process's address space during an attempt at exploitation.
ASLR also makes it more difficult for an attacker to know the location of existing code to repurpose it using return-oriented programming (ROP) techniques.
ℹ️ Check
At the command line, run 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
Navigate to and open:
/etc/sysctl.d/50-security-hardening.conf
Ensure the "randomize_va_space" is uncommented and set to the following:
kernel.randomize_va_space=2
At the command line, run the following command:
# sysctl --system