Microsoft Windows Server 2019

Windows Server 2019 machine inactivity limit must be set to 15 minutes or less, locking the system with the screen saver

STIG ID: WN19-SO-000120 | SRG: SRG-OS-000028-GPOS-00009 | Severity: Medium | CCI: CCI-000056,CCI-000057,CCI-000060 | Vulnerability ID: V-205633

Description

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

C-5898r354817_chk

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: InactivityTimeoutSecsValue Type: REG_DWORDValue: 0x00000384 (900) (or less, excluding "0" which is effectively disabled)

Fix

F-5898r354818_fix

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.