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RHEL-10-700840 RHEL 10 must disable the user list at login for graphical user interfaces.

DISA STIG library V1R3
All changes in this version
first version loaded CAT II

Maps to CM-7 via CCI-000381

Title

RHEL 10 must disable the user list at login for graphical user interfaces.

Control

Note: This requirement assumes the use of the RHEL 10 default graphical user interface, the GNOME desktop environment. If the system does not have any graphical user interface installed, this requirement is not applicable. Verify RHEL 10 disables the user login list for graphical user interfaces with the following command: $ gsettings get org.gnome.login-screen disable-user-list true If the setting is "false", this is a finding.

Discussion

Leaving the user list enabled is a security risk because it allows anyone with physical access to the system to enumerate known user accounts without authenticated access to the system.

Related controls

CCI-000381

Fix

Configure RHEL 10 to disable the user list at login for graphical user interfaces. Note: The example below is using the database "local" for the system. If the system is using another database in "/etc/dconf/profile/user", the file should be created under the appropriate subdirectory. Create a database to contain the systemwide screensaver settings (if it does not already exist) with the following command: $ sudo vi /etc/dconf/db/local.d/02-login-screen [org/gnome/login-screen] disable-user-list=true Update the system databases: $ sudo dconf update