STIGQter STIGQter: STIG Summary: VMware vSphere 7.0 ESXi Security Technical Implementation Guide Version: 1 Release: 4 Benchmark Date: 02 Apr 2025:

The ESXi host must verify certificates for SSL syslog endpoints.

DISA Rule

SV-256438r959010_rule

Vulnerability Number

V-256438

Group Title

SRG-OS-000480-VMM-002000

Rule Version

ESXI-70-000086

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

To configure SSL syslog endpoint certificate checking it must be turned on and also the trusted certificate chain must be added to ESXi's trusted store.

From the vSphere Client go to Hosts and Clusters.

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

Select the "Syslog.global.logCheckSSLCerts" value and set it to "true".

Copy the PEM formatted trusted CA certificate so that is accessible to the host and append the contents to /etc/vmware/ssl/castore.pem by running the follow command:

# <path/to/cacert> >> /etc/vmware/ssl/castore.pem

or

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

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

Copy the PEM formatted trusted CA certificate so that is accessible to the host.

$esxcli = Get-EsxCli -v2
$arguments = $esxcli.system.security.certificatestore.add.CreateArgs()
$arguments.filename = <path/to/cacert>
$esxcli.system.security.certificatestore.add.Invoke($arguments)

Check Contents

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.logCheckSSLCerts" 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.logCheckSSLCerts

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

Vulnerability Number

V-256438

Documentable

False

Rule Version

ESXI-70-000086

Severity Override Guidance

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.logCheckSSLCerts" 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.logCheckSSLCerts

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

Check Content Reference

M

Target Key

5518