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The Ubuntu operating system must retain a user's session lock until that user reestablishes access using established identification and authentication procedures.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-238199UBTU-20-010004SV-238199r958400_ruleCCI-000056medium
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 the Ubuntu operating system must remain in place until the user reauthenticates. No other activity aside from reauthentication must unlock the system. Satisfies: SRG-OS-000028-GPOS-00009, SRG-OS-000029-GPOS-00010
STIGDate
Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide2025-05-16

Related Frameworks

2 mappings 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 (20) 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

+10 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
CCI2 mappings
CCI-000056
1.00
CCI-000057
1.00

Details

Check Text (C-238199r958400_chk)

Verify the Ubuntu operation system has a graphical user interface session lock enabled. Note: If the Ubuntu operating system does not have a graphical user interface installed, this requirement is Not Applicable. Get the "lock-enabled" setting to verify the graphical user interface session has the lock enabled with the following command: $ sudo gsettings get org.gnome.desktop.screensaver lock-enabled true If "lock-enabled" is not set to "true", this is a finding.

Fix Text (F-41368r653771_fix)

Configure the Ubuntu operating system to allow a user to lock the current graphical user interface session. Note: If the Ubuntu operating system does not have a graphical user interface installed, this requirement is Not Applicable. Set the "lock-enabled" setting to allow graphical user interface session locks with the following command: $ sudo gsettings set org.gnome.desktop.screensaver lock-enabled true