STIGQter: STIG Summary: Riverbed NetIM OS Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 11 Sep 2025:

Ubuntu OS must initiate a graphical session lock after 15 minutes of inactivity.

DISA Rule

SV-275629r1147937_rule

Vulnerability Number

V-275629

Group Title

SRG-OS-000029-GPOS-00010

Rule Version

RIIM-OS-271025

Severity

CAT II

CCI(s)

• CCI-000057 - The information system initiates a session lock after the organization-defined time period of inactivity.

Weight

10

Fix Recommendation

Configure Ubuntu OS to lock the current graphical user interface session after 15 minutes of inactivity.

Create or edit a file named /etc/dconf/db/local.d/00-screensaver with the following contents:

[org/gnome/desktop/screensaver]
lock-enabled=true
lock-delay=0

[org/gnome/desktop/session]
idle-delay=600

Check Contents

Verify Ubuntu OS has a graphical user interface session lock configured to activate after 15 minutes of inactivity by using the following commands:

Note: If no graphical user interface is installed, this requirement is not applicable.

Get the following settings to verify the graphical user interface session is configured to lock the graphical user session after 15 minutes of inactivity:

$ gsettings get org.gnome.desktop.screensaver lock-enabled
true

$ gsettings get org.gnome.desktop.screensaver lock-delay
uint32 0

$ gsettings get org.gnome.desktop.session idle-delay
uint32 900

If "lock-enabled" is not set to "true", is commented out, or is missing, this is a finding.

If "lock-delay" is set to a value greater than "0", or if "idle-delay" is set to a value greater than "900", is commented out, or is missing, this is a finding.

Vulnerability Number

V-275629

Documentable

False

Rule Version

RIIM-OS-271025

Severity Override Guidance

Verify Ubuntu OS has a graphical user interface session lock configured to activate after 15 minutes of inactivity by using the following commands:

Note: If no graphical user interface is installed, this requirement is not applicable.

Get the following settings to verify the graphical user interface session is configured to lock the graphical user session after 15 minutes of inactivity:

$ gsettings get org.gnome.desktop.screensaver lock-enabled
true

$ gsettings get org.gnome.desktop.screensaver lock-delay
uint32 0

$ gsettings get org.gnome.desktop.session idle-delay
uint32 900

If "lock-enabled" is not set to "true", is commented out, or is missing, this is a finding.

If "lock-delay" is set to a value greater than "0", or if "idle-delay" is set to a value greater than "900", is commented out, or is missing, this is a finding.

Check Content Reference

M

Target Key

5706