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The graphical display manager must not be the default target on RHEL 8 unless approved.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-251718 | RHEL-08-040321 | SV-251718r809378_rule | Medium |
| Description |
|---|
| Internet services that are not required for system or application processes must not be active 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. |
| STIG | Date |
|---|---|
| Red Hat Enterprise Linux 8 Security Technical Implementation Guide | 2022-09-07 |
Details
| Check Text ( C-55155r809376_chk ) |
|---|
| Verify that the system is configured to boot to the command line: $ systemctl get-default multi-user.target If the system default target is not set to "multi-user.target" and the Information System Security Officer (ISSO) lacks a documented requirement for a graphical user interface, this is a finding. |
| Fix Text (F-55109r809377_fix) |
|---|
| Document the requirement for a graphical user interface with the ISSO or reinstall the operating system without the graphical user interface. If reinstallation is not feasible, then continue with the following procedure: Open an SSH session and enter the following commands: $ sudo systemctl set-default multi-user.target A reboot is required for the changes to take effect. |