Oracle Linux 9 Security Technical Implementation Guide

The Oracle Linux 9 Security Technical Implementation Guide (V1 R7) has 450 STIG checks. New to STIG checklists? Read What is a STIG checklist?, CKL vs CKLB, and STIG vs SCAP benchmark.

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Severity

Version

V1 · R7

CurrentPublished Wed Sep 30 2026

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

Oracle Linux 9 Security Technical Implementation Guide

Assessment Title

Rule Text

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

Description

Discussion Text

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.

New to STIG checklists? Read What is a STIG checklist? and CKL vs CKLB.

Objective

V-271440

Rule

SV-271440r1092462_rule

Severity

medium

Rule Version

OL09-00-000020

Documentable

false

IA Controls

NIST SP 800-53

Rev 5

Assessment Procedure

Check Text

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.

Implementation Procedure

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.

STIG check 10 of 450 in the Oracle Linux 9 STIG checklist

← Previous · V-271439OL 9 vendor packaged system security patches and updates must be installed and up to date.Next · V-271441 →OL 9 must require authentication to access emergency mode.