The graphical display manager must not be the default target on TOSS 5 unless approved.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-282625 | TOSS-05-000087 | SV-282625r1200855_rule | CCI-000366 | medium |
| 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. | ||||
| STIG | Date | |||
| Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide | 2026-04-01 | |||
Details
Check Text (C-282625r1200855_chk)
Verify TOSS 5 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-87091r1200854_fix)
Document the requirement for a graphical user interface with the ISSO or set the default target to "multi-user" using the following command:
$ sudo systemctl set-default multi-user.target