Check: WN19-SO-000110
Microsoft Windows Server 2019 STIG:
WN19-SO-000110
(in versions v3 r2 through v1 r1)
Title
Windows Server 2019 must be configured to require a strong session key. (Cat II impact)
Discussion
A computer connecting to a domain controller will establish a secure channel. The secure channel connection may be subject to compromise, such as hijacking or eavesdropping, if strong session keys are not used to establish the connection. Requiring strong session keys enforces 128-bit encryption between systems. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188
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: \SYSTEM\CurrentControlSet\Services\Netlogon\Parameters\ Value Name: RequireStrongKey Value Type: REG_DWORD Value: 0x00000001 (1) This setting may prevent a system from being joined to a domain if not configured consistently between systems.
Fix Text
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Domain member: Require strong (Windows 2000 or Later) session key" to "Enabled".
Additional Identifiers
Rule ID: SV-205824r958908_rule
Vulnerability ID: V-205824
Group Title: SRG-OS-000423-GPOS-00187
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-002418 |
Protect the confidentiality and/or integrity of transmitted information. |
| CCI-002421 |
Implement cryptographic mechanisms to prevent unauthorized disclosure of information and/or detect changes to information during transmission. |