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← Back to VMware vSphere 8.0 ESXi Security Technical Implementation Guide

V-258789

CAT II (Medium)

The ESXi host must enable strict x509 verification for SSL syslog endpoints.

Rule ID

SV-258789r933428_rule

STIG

VMware vSphere 8.0 ESXi Security Technical Implementation Guide

Version

V1R1

CCIs

CCI-000366

Discussion

When sending syslog data to a remote host via SSL, the ESXi host is presented with the endpoint's SSL server certificate. In addition to trust verification, configured elsewhere, this "x509-strict" option performs additional validity checks on CA root certificates during verification. These checks are generally not performed (CA roots are inherently trusted) and might cause incompatibilities with existing, misconfigured CA roots. The NIAP requirements in the Virtualization Protection Profile and Server Virtualization Extended Package, however, require even CA roots to pass validations.

Check Content

If SSL is not used for a syslog target, this is not applicable.

From the vSphere Client, go to Hosts and Clusters.

Select the ESXi Host >> Configure >> System >> Advanced System Settings.

Select the "Syslog.global.certificate.strictX509Compliance" value and verify it is set to "true".

or

From a PowerCLI command prompt while connected to the ESXi host, run the following command:

Get-VMHost | Get-AdvancedSetting -Name Syslog.global.certificate.strictX509Compliance

If the "Syslog.global.certificate.strictX509Compliance" setting is not set to "true", this is a finding.

Fix Text

From the vSphere Client, go to Hosts and Clusters.

Select the ESXi Host >> Configure >> System >> Advanced System Settings.

Click "Edit". Select the "Syslog.global.certificate.strictX509Compliance" value and configure it to "true".

or

From a PowerCLI command prompt while connected to the ESXi host, run the following command:

Get-VMHost | Get-AdvancedSetting -Name Syslog.global.certificate.strictX509Compliance | Set-AdvancedSetting -Value "true"