Check: WN19-SO-000120
Microsoft Windows Server 2019 STIG:
WN19-SO-000120
(in versions v3 r2 through v1 r1)
Title
Windows Server 2019 machine inactivity limit must be set to 15 minutes or less, locking the system with the screen saver. (Cat II impact)
Discussion
Unattended systems are susceptible to unauthorized use and should be locked when unattended. The screen saver should be set at a maximum of 15 minutes and be password protected. This protects critical and sensitive data from exposure to unauthorized personnel with physical access to the computer. Satisfies: SRG-OS-000028-GPOS-00009, SRG-OS-000029-GPOS-00010, SRG-OS-000031-GPOS-00012
Check Content
If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: InactivityTimeoutSecs Value Type: REG_DWORD Value: 0x00000384 (900) (or less, excluding "0" which is effectively disabled)
Fix Text
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Interactive logon: Machine inactivity limit" to "900" seconds or less, excluding "0" which is effectively disabled.
Additional Identifiers
Rule ID: SV-205633r958400_rule
Vulnerability ID: V-205633
Group Title: SRG-OS-000028-GPOS-00009
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-000056 |
Retain the device lock until the user reestablishes access using established identification and authentication procedures. |
| 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-000060 |
Conceal, via the device lock, information previously visible on the display with a publicly viewable image. |