CCE-99452-5| Platform: cpe:/o:ubuntu:ubuntu_linux:22.04, cpe:/o:ubuntu:ubuntu_linux:23.04 | Date: (C)2023-07-04 (M)2023-09-01 |
Description:
GDM is the GNOME Display Manager which handles graphical login for GNOME based systems. The disable-user-list option controls is a list of users is displayed on the login screen.
Rationale:
Displaying the user list eliminates half of the Userid/Password equation that an unauthorized person would need to log on.
Fix:
Edit or create the file /etc/gdm3/greeter.dconf-defaults and edit or add the following:
[org/gnome/login-screen]
disable-user-list=true
Run the following command to re-load GDM on the next login or reboot:
# dpkg-reconfigure gdm3
Parameter:
[yes/no]
Technical Mechanism:
Edit or create the file /etc/gdm3/greeter.dconf-defaults and edit or add the following:
[org/gnome/login-screen]
disable-user-list=true
Run the following command to re-load GDM on the next login or reboot:
# dpkg-reconfigure gdm3
| CCSS Severity: | CCSS Metrics: |
| CCSS Score : 5.3 | Attack Vector: NETWORK |
| Exploit Score: 3.9 | Attack Complexity: LOW |
| Impact Score: 1.4 | Privileges Required: NONE |
| Severity: MEDIUM | User Interaction: NONE |
| Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | Scope: UNCHANGED |
| | Confidentiality: LOW |
| | Integrity: NONE |
| | Availability: NONE |
| | |
References: | Resource Id | Reference |
|---|
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:90428 |
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:92331 |
