VMware: Virtual Machine: Device State

Description

The VMware: Virtual Machine: Device State test is used to verify no device is connected to a virtual machine if it is not required.

The vm_device_object element is used by a vm_device_test to define the vm name, connection string, and the name of the device type to be evaluated.

The vm_device_state element holds information regarding the connection state of the specified device.

Technical Details

Artifact Parameters

vmware.virtual_machine.device_state

Name	Type	Description
device_type	string	Value from device_type constraints.
vm_name	string	The name of the VM to scope applicable.

NOTE: The device_type parameter is governed by a constraint allowing only the following values:

floppy
cdrom
parallel_port
serial_port
usb
hard_disk

Supported Test Types

VMware: Virtual Machine: Device State Test

Test Type Parameters

vmware.virtual_machine.device_state

Name	Type	Description
connected	boolean	Connected?

Generated Content

vmware.virtual_machine.device_state

XCCDF+AE

This is what the AE check looks like, inside a Rule, in the XCCDF.

<xccdf:complex-check operator="AND">
  <xccdf:check system="https://benchmarks.cisecurity.org/ae/0.5">
    <xccdf:check-content>
      <ae:artifact_expression id="xccdf_org.cisecurity.benchmarks_ae_[SECTION-NUMBER]">
        <ae:artifact_oval_id>[ARTIFACT-OVAL-ID]</ae:artifact_oval_id>
        <ae:title>[ARTIFACT-TITLE]</ae:title>
        <ae:artifact type="[ARTIFACT-TYPE-NAME]">
          <ae:parameters>
            <ae:parameter dt="string" name="device_type">[device_type.value]</ae:parameter>
            <ae:parameter dt="string" name="vm_name">[vm_name.value]</ae:parameter>
          </ae:parameters>
        </ae:artifact>
        <ae:test type="[TEST-TYPE-NAME]">
          <ae:parameters>
            <ae:parameter dt="boolean" name="connected">[connected.value]</ae:parameter>
          </ae:parameters>
        </ae:test>
        <ae:profiles>
          <ae:profile idref="xccdf_org.cisecurity.benchmarks_profile_Level_2" />
        </ae:profiles>
      </ae:artifact_expression>
    </xccdf:check-content>
  </xccdf:check>
</xccdf:complex-check>

SCAP

XCCDF

For vmware.virtual_machine.device_state vmware.virtual_machine.device_state artifacts, an XCCDF Value element is generated.

<Value
  id="xccdf_org.cisecurity.benchmarks_value_[ARTIFACT-OVAL-ID]_var"
  operator="equals"
  type="number">
  <title>[RECOMMENDATION-TITLE]</title>
  <description>This value is used in Rule: [RECOMMENDATION-TITLE]</description>
  <value>[value.value]</value>
</Value>

For vmware.virtual_machine.device_state vmware.virtual_machine.device_state artifacts, the XCCDF check looks like this.

<check system="http://oval.mitre.org/XMLSchema/oval-definitions-5">
  <check-export
    export-name="oval:org.cisecurity.benchmarks.[PLATFORM]:var:[ARTIFACT-OVAL-ID]"
    value-id="xccdf_org.cisecurity.benchmarks_value_[ARTIFACT-OVAL-ID]_var" />
  <check-export
    export-name="oval:org.cisecurity.benchmarks:var:100000"
    value-id="xccdf_org.cisecurity.benchmarks_value_esxi.connection" />
  <check-content-ref
    href="[BENCHMARK-TITLE]-oval.xml"
    name="oval:org.cisecurity.benchmarks.[PLATFORM]:def:[ARTIFACT-OVAL-ID]" />
</check>

OVAL

Test

<vm_device_test
  xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#esxi"
  id="oval:org.cisecurity.benchmarks.[PLATFORM]:tst:[ARTIFACT-OVAL-ID]"
  check_existence="any_exist"
  check="all"
  comment="[ARTIFACT-TITLE]"
  version="1">
  <object object_ref="oval:org.cisecurity.benchmarks.[PLATFORM]:obj:[ARTIFACT-OVAL-ID]" />
  <state state_ref="oval:org.cisecurity.benchmarks.[PLATFORM]:ste:[ARTIFACT-OVAL-ID]" />
</vm_device_test>

Object

<vm_device_object
  xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#esxi"
  id="oval:org.cisecurity.benchmarks.[PLATFORM]:obj:[ARTIFACT-OVAL-ID]"
  comment="[ARTIFACT-TITLE]"
  version="1">
  <connection_string var_ref="oval:org.cisecurity.benchmarks:var:100000" />
  <vm_name operation="pattern match">.*</vm_name>
  <device_type>[device_type.value]</device_type>
</vm_device_object>

State

<vm_device_state
  xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#esxi"
  id="oval:org.cisecurity.benchmarks.[PLATFORM]:ste:[ARTIFACT-OVAL-ID]"
  comment="[ARTIFACT-TITLE]"
  version="1">
  <connected
    datatype="boolean"
    operation="equals"
    var_ref="oval:org.cisecurity.benchmarks.[PLATFORM]:var:[ARTIFACT-OVAL-ID]" />
</vm_device_state>

Variable

<external_variable
  id="oval:org.cisecurity.benchmarks.[PLATFORM]:var:[ARTIFACT-OVAL-ID]"
  datatype="boolean"
  version="1"
  comment="This value is used in Rule: [RECOMMENDATION-TITLE]" />

YAML

artifact-expression:
  artifact-unique-id: "[ARTIFACT-OVAL-ID]"
  artifact-title: "[ARTIFACT-TITLE]"
  artifact:
    type: "[ARTIFACT-TYPE-NAME]"
    parameters:
      - parameter:
          name: "device_type"
          dt: "string"
          value: "[device_type.value]"
      - parameter:
          name: "vm_name"
          dt: "string"
          value: "[vm_name.value]"
  test:
    type: "[TEST-TYPE-NAME]"
    parameters:
      - parameter:
          name: "connected"
          dt: "boolean"
          value: "[connected.value]"

JSON

{
  "artifact-expression": {
    "artifact-unique-id": "[ARTIFACT-OVAL-ID]",
    "artifact-title": "[ARTIFACT-TITLE]",
    "artifact": {
      "type": "[ARTIFACT-TYPE-NAME]",
      "parameters": [
        {
          "parameter": {
            "name": "device_type",
            "dt": "string",
            "value": "[device_type.value]"
          }
        },
        {
          "parameter": {
            "name": "vm_name",
            "dt": "string",
            "value": "[vm_name.value]"
          }
        }
      ]
    },
    "test": {
      "type": "[TEST-TYPE-NAME]",
      "parameters": [
        {
          "parameter": {
            "name": "connected",
            "dt": "boolean",
            "value": "[connected.value]"
          }
        }
      ]
    }
  }
}