Remove the GDM Package Group
An XCCDF Rule
Description
By removing the gdm package, the system no longer has GNOME installed
installed. If X Windows is not installed then the system cannot boot into graphical user mode.
This prevents the system from being accidentally or maliciously booted into a graphical.target
mode. To do so, run the following command:
$ sudo yum remove gdm
Rationale
Unnecessary service packages must not be installed to decrease the attack surface of the system. A graphical environment is unnecessary for certain types of systems including a virtualization hypervisor.
- ID
- xccdf_org.ssgproject.content_rule_package_gdm_removed
- Severity
- Medium
- References
- Updated
Remediation - Shell Script
# Remediation is applicable only in certain platforms
if rpm --quiet -q gdm; then
# CAUTION: This remediation script will remove gdm
# from the system, and may remove any packages
# that depend on gdm. Execute this
Remediation - Anaconda Pre-Install Instructions
package --remove=gdm
Remediation - Ansible
- name: Gather the package facts
package_facts:
manager: auto
tags:
- CCE-83549-6
- NIST-800-53-CM-6(a)
Remediation - Puppet
include remove_gdm
class remove_gdm {
package { 'gdm':
ensure => 'purged',
}