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V-271440

CAT II (Medium)

OL 9 must be configured so that the graphical display manager is not the default target unless approved.

Rule ID

SV-271440r1092462_rule

STIG

Oracle Linux 9 Security Technical Implementation Guide

Version

V1R5

CCIs

CCI-000366

Discussion

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.

Check Content

Verify that OL 9 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

Configure OL 9 to boot to the command line.

Set the default target to multi-user with the following command:
$ sudo systemctl set-default multi-user.target

If there is an operational requirement for a graphical user interface, document it with the ISSO.