Check: ESXI-65-000034
VMware vSphere 6.5 ESXi STIG:
ESXI-65-000034
(in versions v2 r4 through v1 r1)
Title
The ESXi host must disable the Managed Object Browser (MOB). (Cat II impact)
Discussion
The Managed Object Browser (MOB) provides a way to explore the object model used by the VMkernel to manage the host and enables configurations to be changed as well. This interface is meant to be used primarily for debugging the vSphere SDK, but because there are no access controls it could also be used as a method obtain information about a host being targeted for unauthorized access. By default this is disabled for ESXi in version 6.
Check Content
From the vSphere Web Client select the ESXi Host and go to Configure >> System >> Advanced System Settings. Select the Config.HostAgent.plugins.solo.enableMob value and verify it is set to false. or From a PowerCLI command prompt while connected to the ESXi host run the following command: Get-VMHost | Get-AdvancedSetting -Name Config.HostAgent.plugins.solo.enableMob If the Config.HostAgent.plugins.solo.enableMob setting is not set to false, this is a finding.
Fix Text
From the vSphere Web Client select the ESXi Host and go to Configure >> System >> Advanced System Settings. Click Edit and select the Config.HostAgent.plugins.solo.enableMob value and configure it to false. or From a PowerCLI command prompt while connected to the ESXi host run the following commands: Get-VMHost | Get-AdvancedSetting -Name Config.HostAgent.plugins.solo.enableMob | Set-AdvancedSetting -Value false
Additional Identifiers
Rule ID: SV-207635r378841_rule
Vulnerability ID: V-207635
Group Title: SRG-OS-000095-VMM-000480
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-000381 |
The organization configures the information system to provide only essential capabilities. |
Controls
Number | Title |
---|---|
CM-7 |
Least Functionality |