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Disable IEEE 1394 (FireWire) Support

An XCCDF Rule

Description

The IEEE 1394 (FireWire) is a serial bus standard for high-speed real-time communication. To configure the system to prevent the firewire-core kernel module from being loaded, add the following line to the file /etc/modprobe.d/firewire-core.conf: 

install firewire-core /bin/true
To configure the system to prevent the firewire-core from being used, add the following line to file /etc/modprobe.d/firewire-core.conf: 
blacklist firewire-core

Rationale

Disabling FireWire protects the system against exploitation of any flaws in its implementation.

ID
xccdf_org.ssgproject.content_rule_kernel_module_firewire-core_disabled
Severity
Low
References
Updated



Remediation - Shell Script

# Remediation is applicable only in certain platforms
if [ ! -f /.dockerenv ] && [ ! -f /run/.containerenv ]; then

if LC_ALL=C grep -q -m 1 "^install firewire-core" /etc/modprobe.d/firewire-core.conf ; then
	
	sed -i 's#^install firewire-core.*#install firewire-core /bin/true#g' /etc/modprobe.d/firewire-core.conf

Remediation - Ansible

- name: Ensure kernel module 'firewire-core' is disabled
  lineinfile:
    create: true
    dest: /etc/modprobe.d/firewire-core.conf
    regexp: install\s+firewire-core
    line: install firewire-core /bin/false