A graphical display manager must not be installed on RHEL 9 unless approved.

An XCCDF Rule

Description

Unnecessary service packages must not be installed to decrease the attack surface of the system. Graphical display managers have a long history of security vulnerabilities and must not be used, unless approved and documented.

ID: SV-257837r1044910_rule
Version: RHEL-09-215070
Severity: Medium
References: CCI-000366
Updated: about 2 months ago

Remediation Templates

Document the requirement for a graphical user interface with the ISSO or remove all xorg packages with the following command:

Warning: If you are accessing the system through the graphical user interface, change to the multi-user.target with the following command:

$ sudo systemctl isolate multi-user.target
Warning: Removal of the graphical user interface will immediately render it useless. The following commands must not be run from a virtual terminal emulator in the graphical interface.

$ sudo dnf remove "xorg*"
$ sudo systemctl set-default multi-user.target

A graphical display manager must not be installed on RHEL 9 unless approved.

Description

Remediation Templates

A Manual Procedure