Finding ID | Version | Rule ID | IA Controls | Severity |
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V-258027 | RHEL-09-271085 | SV-258027r958404_rule | Medium |
Description |
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Setting the screensaver mode to blank-only conceals the contents of the display from passersby. |
STIG | Date |
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Red Hat Enterprise Linux 9 Security Technical Implementation Guide | 2024-06-04 |
Check Text ( C-61768r926066_chk ) |
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To ensure the screensaver is configured to be blank, run the following command: Note: This requirement assumes the use of the RHEL 9 default graphical user interface, the GNOME desktop environment. If the system does not have any graphical user interface installed, this requirement is Not Applicable. $ gsettings get org.gnome.desktop.screensaver picture-uri If properly configured, the output should be "''". To ensure that users cannot set the screensaver background, run the following: $ grep picture-uri /etc/dconf/db/local.d/locks/* If properly configured, the output should be "/org/gnome/desktop/screensaver/picture-uri". If it is not set or configured properly, this is a finding. |
Fix Text (F-61692r926067_fix) |
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The dconf settings can be edited in the /etc/dconf/db/* location. First, add or update the [org/gnome/desktop/screensaver] section of the "/etc/dconf/db/local.d/00-security-settings" database file and add or update the following lines: [org/gnome/desktop/screensaver] picture-uri='' Then, add the following line to "/etc/dconf/db/local.d/locks/00-security-settings-lock" to prevent user modification: /org/gnome/desktop/screensaver/picture-uri Finally, update the dconf system databases: $ sudo dconf update |