Check: ESXI-67-000038
VMware vSphere 6.7 ESXi STIG:
ESXI-67-000038
(in versions v1 r3 through v1 r2)
Title
ESXi hosts using Host Profiles and/or Auto Deploy must use the vSphere Authentication Proxy to protect passwords when adding themselves to Active Directory. (Cat II impact)
Discussion
If a host is configured to join an Active Directory domain using Host Profiles and/or Auto Deploy, the Active Directory credentials are saved in the profile and are transmitted over the network. To avoid having to save Active Directory credentials in the Host Profile and to avoid transmitting Active Directory credentials over the network, use the vSphere Authentication Proxy. Satisfies: SRG-OS-000104-VMM-000500, SRG-OS-000109-VMM-000550, SRG-OS-000112-VMM-000560, SRG-OS-000113-VMM-000570
Check Content
From the vSphere Client, go to Home >> Host Profiles and select a Host Profile to edit. View the settings under Security and Services >> Security Settings >> Authentication Configuration >> Active Directory Configuration >> Join Domain Method. Verify the method used to join hosts to a domain is set to "Use vSphere Authentication Proxy to add the host to domain". or From a PowerCLI command prompt while connected to the ESXi host, run the following command: Get-VMHost | Select Name, ` @{N="HostProfile";E={$_ | Get-VMHostProfile}}, ` @{N="JoinADEnabled";E={($_ | Get-VmHostProfile).ExtensionData.Config.ApplyProfile.Authentication.ActiveDirectory.Enabled}}, ` @{N="JoinDomainMethod";E={(($_ | Get-VMHostProfile).ExtensionData.Config.ApplyProfile.Authentication.ActiveDirectory | Select -ExpandProperty Policy | Where {$_.Id -eq "JoinDomainMethodPolicy"}).Policyoption.Id}} Verify that if "JoinADEnabled" is "True", "JoinDomainMethod" is "FixedCAMConfigOption". If not using Host Profiles to join active directory, this is not a finding.
Fix Text
From the vSphere Client, go to Home >> Host Profiles and select a Host Profile to edit. View the settings under Security and Services >> Security Settings >> Authentication Configuration >> Active Directory Configuration >> Join Domain Method. Set the method used to join hosts to a domain to "Use vSphere Authentication Proxy to add the host to domain" and provide the IP address of the vSphere Authentication Proxy server.
Additional Identifiers
Rule ID: SV-239293r854590_rule
Vulnerability ID: V-239293
Group Title: SRG-OS-000104-VMM-000500
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-000764 |
The information system uniquely identifies and authenticates organizational users (or processes acting on behalf of organizational users). |
CCI-000770 |
The organization requires individuals to be authenticated with an individual authenticator when a group authenticator is employed. |
CCI-001941 |
The information system implements replay-resistant authentication mechanisms for network access to privileged accounts. |
CCI-001942 |
The information system implements replay-resistant authentication mechanisms for network access to non-privileged accounts. |
Controls
Number | Title |
---|---|
IA-2 |
Identification And Authentication (Organizational Users) |
IA-2 (5) |
Group Authentication |
IA-2 (8) |
Network Access To Privileged Accounts - Replay Resistant |
IA-2 (9) |
Network Access To Non-Privileged Accounts - Replay Resistant |