Check: UBTU-20-010005
Canonical Ubuntu 20.04 LTS STIG:
UBTU-20-010005
(in versions v2 r1 through v1 r1)
Title
The Ubuntu operating system must allow users to directly initiate a session lock for all connection types. (Cat II impact)
Discussion
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. Rather than be forced to wait for a period of time to expire before the user session can be locked, the Ubuntu operating systems need to provide users with the ability to manually invoke a session lock so users may secure their session if they need to temporarily vacate the immediate physical vicinity. Satisfies: SRG-OS-000030-GPOS-00011, SRG-OS-000031-GPOS-00012
Check Content
Verify the Ubuntu operating system has the "vlock" package installed by running the following command: $ dpkg -l | grep vlock If "vlock" is not installed, this is a finding.
Fix Text
Install the "vlock" package (if it is not already installed) by running the following command: $ sudo apt-get install vlock
Additional Identifiers
Rule ID: SV-238200r1015139_rule
Vulnerability ID: V-238200
Group Title: SRG-OS-000030-GPOS-00011
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-000057 |
Prevent further access to the system by initiating a device lock after organization-defined time period of inactivity; and/or requiring the user to initiate a device lock before leaving the system unattended. |
| CCI-000058 |
The information system provides the capability for users to directly initiate session lock mechanisms. |
| CCI-000060 |
Conceal, via the device lock, information previously visible on the display with a publicly viewable image. |