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

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-275629RIIM-OS-271025SV-275629r1147937_ruleCCI-000057medium
Description
A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not want to log out because of the temporary nature of the absence. The session lock is implemented at the point where session activity can be determined. Regardless of where the session lock is determined and implemented, once invoked, a session lock of Ubuntu OS must remain in place until the user reauthenticates. No other activity aside from reauthentication must unlock the system.
STIGDate
Riverbed NetIM OS Security Technical Implementation Guide2025-10-02

Related Frameworks

1 mapping across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

IAC-24Session Lock
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (18) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-11Device Lock
1.00
AC-11(1)Pattern-hiding Displays
1.00
AC-12Session Termination
1.00
AC-12(2)Termination Message
1.00
AU-10Non-repudiation
1.00
CM-7Least Functionality
1.00
IA-11Re-authentication
1.00
IA-2Identification and Authentication (Organizational Users)
1.00
IA-2(1)Multi-factor Authentication to Privileged Accounts
1.00
IA-2(12)Acceptance of PIV Credentials
1.00

+8 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.1.10
1.00
CCI1 mapping
CCI-000057
1.00

Details

Check Text (C-275629r1147937_chk)

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.

Fix Text (F-79636r1147936_fix)

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