STIGQter: STIG Summary: Oracle Linux 7 Security Technical Implementation Guide Version: 2 Release: 3 Benchmark Date: 23 Apr 2021:

The Oracle Linux operating system must implement virtual address space randomization.

DISA Rule

SV-221846r603260_rule

Vulnerability Number

V-221846

Group Title

SRG-OS-000433-GPOS-00193

Rule Version

OL07-00-040201

Severity

CAT II

CCI(s)

• CCI-002824 - The information system implements organization-defined security safeguards to protect its memory from unauthorized code execution.

Weight

10

Fix Recommendation

Configure the operating system implement virtual address space randomization.

Set the system to the required kernel parameter by adding the following line to "/etc/sysctl.conf" or a config file in the /etc/sysctl.d/ directory (or modify the line to have the required value):

kernel.randomize_va_space = 2

Issue the following command to make the changes take effect:

# sysctl --system

Check Contents

Verify the operating system implements virtual address space randomization.

# grep kernel.randomize_va_space /etc/sysctl.conf /etc/sysctl.d/*

kernel.randomize_va_space = 2

If "kernel.randomize_va_space" is not configured in the /etc/sysctl.conf file or in the /etc/sysctl.d/ directory, is commented out or does not have a value of "2", this is a finding.

Check that the operating system implements virtual address space randomization with the following command:

# /sbin/sysctl -a | grep kernel.randomize_va_space

kernel.randomize_va_space = 2

If "kernel.randomize_va_space" does not have a value of "2", this is a finding.

Vulnerability Number

V-221846

Documentable

False

Rule Version

OL07-00-040201

Severity Override Guidance

Verify the operating system implements virtual address space randomization.

# grep kernel.randomize_va_space /etc/sysctl.conf /etc/sysctl.d/*

kernel.randomize_va_space = 2

If "kernel.randomize_va_space" is not configured in the /etc/sysctl.conf file or in the /etc/sysctl.d/ directory, is commented out or does not have a value of "2", this is a finding.

Check that the operating system implements virtual address space randomization with the following command:

# /sbin/sysctl -a | grep kernel.randomize_va_space

kernel.randomize_va_space = 2

If "kernel.randomize_va_space" does not have a value of "2", this is a finding.

Check Content Reference

M

Target Key

4089

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