STIGQter: STIG Summary: VMware vSphere 8.0 ESXi Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 31 Oct 2023:

The ESXi host must enable bidirectional Challenge-Handshake Authentication Protocol (CHAP) authentication for Internet Small Computer Systems Interface (iSCSI) traffic.

DISA Rule

SV-258747r933302_rule

Vulnerability Number

V-258747

Group Title

SRG-OS-000379-VMM-001550

Rule Version

ESXI-80-000145

Severity

CAT II

CCI(s)

• CCI-001967 - Authenticate organization-defined devices and/or types of devices before establishing a local, remote, and/or network connection using bidirectional authentication that is cryptographically based.

Weight

10

Fix Recommendation

From the vSphere Client, go to Hosts and Clusters.

Select the ESXi Host >> Configure >> Storage >> Storage Adapters.

Select the iSCSI adapter >> Properties >> Authentication.

Click "Edit...". Set "Authentication Method" to "Use bidirectional CHAP" and enter a unique secret for each traffic flow direction.

or

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

Get-VMHost | Get-VMHostHba | Where {$_.Type -eq "iscsi"} | Set-VMHostHba -ChapType Required -ChapName "chapname" -ChapPassword "password" -MutualChapEnabled $true -MutualChapName "mutualchapname" -MutualChapPassword "mutualpassword"

Check Contents

If iSCSI is not used, this is not applicable.

From the vSphere Client, go to Hosts and Clusters.

Select the ESXi Host >> Configure >> Storage >> Storage Adapters.

Select the iSCSI adapter >> Properties >> Authentication >> Method.

View the CHAP configuration and verify CHAP is required for target and host authentication.

or

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

Get-VMHost | Get-VMHostHba | Where {$_.Type -eq "iscsi"} | Select AuthenticationProperties -ExpandProperty AuthenticationProperties

If iSCSI is used and CHAP is not set to "required" for both the target and host, this is a finding.

If iSCSI is used and unique CHAP secrets are not used for each host, this is a finding.

Vulnerability Number

V-258747

Documentable

False

Rule Version

ESXI-80-000145

Severity Override Guidance

If iSCSI is not used, this is not applicable.

From the vSphere Client, go to Hosts and Clusters.

Select the ESXi Host >> Configure >> Storage >> Storage Adapters.

Select the iSCSI adapter >> Properties >> Authentication >> Method.

View the CHAP configuration and verify CHAP is required for target and host authentication.

or

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

Get-VMHost | Get-VMHostHba | Where {$_.Type -eq "iscsi"} | Select AuthenticationProperties -ExpandProperty AuthenticationProperties

If iSCSI is used and CHAP is not set to "required" for both the target and host, this is a finding.

If iSCSI is used and unique CHAP secrets are not used for each host, this is a finding.

Check Content Reference

M

Target Key

5562