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

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-275628RIIM-OS-271020SV-275628r1147934_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 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 (15) 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
AU-10Non-repudiation
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
IA-2(2)Multi-factor Authentication to Non-privileged Accounts
1.00
IA-2(3)Local Access to Privileged Accounts
1.00
IA-2(4)Local Access to Non-privileged Accounts
1.00

+5 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-000056
1.00

Details

Check Text (C-275628r1147934_chk)

Verify Ubuntu OS has a graphical user interface session lock enabled by using the following command: Note: If no graphical user interface is installed, this requirement is not applicable. $ sudo gsettings get org.gnome.desktop.screensaver lock-enabled true If "lock-enabled" is not set to "true", is commented out, or is missing, this is a finding.

Fix Text (F-79635r1147933_fix)

Configure Ubuntu OS to allow a user to lock the current graphical user interface session. Create or edit a file named /etc/dconf/db/local.d/00-screensaver with the following contents: [org/gnome/desktop/screensaver] lock-enabled=true