vmware:vmhost_ntpserver

Description

The vmware:vmhost_ntpserver test is used to verify NTP time synchronization is configured correctly and enabled on each VMware ESXi host.

The vmhost_ntpserver_object element is used by a vmhost_ntpserver_test to define the vmhost name and connection string, and name of the ntp_server to be evaluated.

The vmhost_ntpserver_state element holds information regarding the specified ntp_server.

Technical Details

Artifact Parameters

vmware.vmhost_ntpserver_v2

Name	Type	Description
check_existence	string	Defines how many items should be collected.
vmhost_name	string	The name of the ESXi host to limit collection to. Set to NA if not applicable. Cannot be blank.
ntp_server_name	string	Set to NA if not applicable. Cannot be blank.
vmhost_name_operation	string	Comparison operation.
ntp_server_name_operation	string	Comparison operation.

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

• all_exist

• any_exist

• at_least_one_exists

• none_exist

• only_one_exists

NOTE: The vmhost_name_operation and ntp_server_name_operation parameters are governed by a constraint allowing only the following values:

• equals

• not equal

• case insensitive equals

• case insensitive not equal

• greater than

• less than

• greater than or equal

• less than or equal

• bitwise and

• bitwise or

• pattern match

• subset of

• superset of

Supported Test Types

• vmware:vmhost_ntpserver

Test Type Parameters

vmware.vmhost_ntpserver_v2

Name	Type	Description
check	string	Defines how many collected items must match the expected state.
operation	string	Comparison operation.
datatype	string	Data type.
ntp_server_name	string	The domain name or the IP address of the NTP server(s) added to the host.

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

• all

• at least one

• none satisfy

• only one

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

• equals

• not equal

• case insensitive equals

• case insensitive not equal

• greater than

• less than

• greater than or equal

• less than or equal

• bitwise and

• bitwise or

• pattern match

• subset of

• superset of

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

• boolean

• float

• int

• string

• version

• set

Generated Content

vmware.vmhost_ntpserver_v2

XCCDF+AE

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

<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="check_existence">[check_existence.value]</ae:parameter>
          <ae:parameter dt="string" name="vmhost_name">[vmhost_name.value]</ae:parameter>
          <ae:parameter dt="string" name="vmhost_name_operation">[vmhost_name_operation.value]</ae:parameter>
          <ae:parameter dt="string" name="ntp_server_name">[ntp_server_name.value]</ae:parameter>
          <ae:parameter dt="string" name="ntp_server_name_operation">[ntp_server_name_operation.value]</ae:parameter>
        </ae:parameters>
      </ae:artifact>
      <ae:test type="[TEST-TYPE-NAME]">
        <ae:parameters>
          <ae:parameter dt="string" name="check">[check.value]</ae:parameter>
          <ae:parameter dt="string" name="operation">[operation.value]</ae:parameter>
          <ae:parameter dt="string" name="datatype">[datatype.value]</ae:parameter>
          <ae:parameter dt="string" name="ntp_server_name">[ntp_server_name.value]</ae:parameter>
        </ae:parameters>
      </ae:test>
      <ae:profiles>
        <ae:profile idref="xccdf_org.cisecurity.benchmarks_profile_Level_1" />
      </ae:profiles>
    </ae:artifact_expression>
  </xccdf:check-content>
</xccdf:check>

SCAP

XCCDF

For vmware.vmhost_ntpserver_v2 vmware.vmhost_ntpserver_v2 artifacts, the XCCDF check looks like this. There is no Value element in the XCCDF for this artifact.

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

For vmware.vmhost_ntpserver_v2 vmware.vmhost_ntpserver_v2 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

<vmhost_ntpserver_test
  xmlns="http://oval.mitre.org/XMLSchema/oval-definitions-5#esxi"
  id="oval:org.cisecurity.benchmarks.[PLATFORM]:tst:[ARTIFACT-OVAL-ID]"
  check_existence="[check_existence.value]"
  check="[check.value]"
  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]" />
</vmhost_ntpserver_test>

Object

<vmhost_ntpserver_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" />
  <vmhost_name operation="[operation.value]">[vmhost_name.value]</vmhost_name>
  <ntp_server_name operation="[operation.value]">
    [ntp_server_name.value]
  </ntp_server_name>
</vmhost_ntpserver_object>

State

<vmhost_ntpserver_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">
  <ntp_server_name
    datatype="[datatype.value]"
    operation="[operation.value]"
    var_ref="oval:org.cisecurity.benchmarks.[PLATFORM]:var:[ARTIFACT-OVAL-ID]" />
</vmhost_ntpserver_state>

Variable

<external_variable
  id="oval:org.cisecurity.benchmarks.[PLATFORM]:var:[ARTIFACT-OVAL-ID]"
  datatype="string"
  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: "check_existence"
          dt: "string"
          value: "[check_existence.value]"
      - parameter:
          name: "vmhost_name"
          dt: "string"
          value: "[vmhost_name.value]"
      - parameter:
          name: "vmhost_name_operation"
          dt: "string"
          value: "[vmhost_name_operation.value]"
      - parameter:
          name: "ntp_server_name"
          dt: "string"
          value: "[ntp_server_name.value]"
      - parameter:
          name: "ntp_server_name_operation"
          dt: "string"
          value: "[ntp_server_name_operation.value]"
  test:
    type: "[TEST-TYPE-NAME]"
    parameters:
      - parameter:
          name: "check"
          dt: "string"
          value: "[check.value]"
      - parameter:
          name: "operation"
          dt: "string"
          value: "[operation.value]"
      - parameter:
          name: "datatype"
          dt: "string"
          value: "[datatype.value]"
      - parameter:
          name: "ntp_server_name"
          dt: "string"
          value: "[ntp_server_name.value]"

JSON

{
  "artifact-expression": {
    "artifact-unique-id": "[ARTIFACT-OVAL-ID]",
    "artifact-title": "[ARTIFACT-TITLE]",
    "artifact": {
      "type": "[ARTIFACT-TYPE-NAME]",
      "parameters": [
        {
          "parameter": {
            "name": "check_existence",
            "dt": "string",
            "value": "[check_existence.value]"
          }
        },
        {
          "parameter": {
            "name": "vmhost_name",
            "dt": "string",
            "value": "[vmhost_name.value]"
          }
        },
        {
          "parameter": {
            "name": "vmhost_name_operation",
            "dt": "string",
            "value": "[vmhost_name_operation.value]"
          }
        },
        {
          "parameter": {
            "name": "ntp_server_name",
            "dt": "string",
            "value": "[ntp_server_name.value]"
          }
        },
        {
          "parameter": {
            "name": "ntp_server_name_operation",
            "dt": "string",
            "value": "[ntp_server_name_operation.value]"
          }
      ]
    },
    "test": {
      "type": "[TEST-TYPE-NAME]",
      "parameters": [
        {
          "parameter": {
            "name": "check",
            "dt": "string",
            "value": "[check.value]"
          }
        },
        {
          "parameter": {
            "name": "operation",
            "dt": "string",
            "value": "[operation.value]"
          }
        },
        {
          "parameter": {
            "name": "datetype",
            "dt": "string",
            "value": "[datatype.value]"
          }
        },
        {
          "parameter": {
            "name": "ntp_server_name",
            "dt": "string",
            "value": "[ntp_server_name.value]"
          }
        }
      ]
    }
  }
}