STIGQter: STIG Summary: Red Hat Enterprise Linux 7 Security Technical Implementation Guide Version: 3 Release: 3 Benchmark Date: 23 Apr 2021:

The Red Hat Enterprise Linux operating system must implement virtual address space randomization.

DISA Rule

SV-204584r603261_rule

Vulnerability Number

V-204584

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

RHEL-07-040201

Severity

CAT II

CCI(s)

• CCI-000366 - The organization implements the security configuration settings.

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-204584

Documentable

False

Rule Version

RHEL-07-040201

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

2899

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