Create a Vulnerability Response CI lookup rule

The CI Lookup Rules module contains rules that are used to find the matching record for host information received during third-party vulnerability integration imports. The host information is matched with the discovered items, unmatched configuration item classes, and the Configuration Management Database (CMDB).

始める前に

Persona and granular roles are available to help you manage what users and groups can see and do in the Vulnerability Response application. For an initial assignment of the persona roles in Setup Assistant, see Assign the Vulnerability Response persona roles using Setup Assistant. For more information about managing granular roles, see Manage persona and granular roles for Vulnerability Response.

Role required: sn_vul.vulnerability_admin

このタスクについて

Creating CI lookup rules requires advanced ServiceNow and Vulnerability Response expertise. Rather than modifying one of the existing lookup rules, consider copying it and modifying the copy. When you are satisfied that the new rule does what you want, deactivate the original.

注:

Rules, once removed, cannot be recovered. Rather than removing existing rules, deactivate them when creating new ones.

手順

1. Navigate to All > Security Operations > CMDB > CI Lookup Rules.
2. Click New.
3. On the form, fill in the fields.

   表 : 1. CI lookup rule form

   Field	Description
   Name	Name of the rule.
   Lookup method	Method used for matching. Choices are: Script: Pre-built (IP address, DNS name, and so on) or custom script. Field matching: Search on table or field in the CMDB.
   Type	Type used with the Script Lookup method.
   Order	Order of precedence for the rule. Rules with the lowest order are evaluated first.
   Active	Check box for whether the rule is active or disabled.
   Source	Source used as input to this rule.
   Source field	Source field used as input to this rule. Select any field, but it is treated as a string value.
   Condition	Condition based on which the CI lookup rule is applied. This condition depends on the attribute from the third-party scanner. 注: The asset attribute is a part of the payload. It is received from the third-party scanner. See the Discovered Items table for payload examples.
   Script	Editable sample script, based on the Type, is shown. Implement the custom script following the comments included in the template of the default function. 注: The process function has three parameters: rule, sourceValue, and sourcePayload
   Search on table	Table to search within the CMDB. Used with field matching Lookup Method.
   Search on field	Field that contains information that can be used to locate a CI. Used with the field matching Lookup method. This field may be on the CI record, or on a related record, such as a network adapter.

4. Click Submit.

   For more information implementation information for CI Lookup Rules see, Steps to help prevent duplicate or orphaned records after running Vulnerability Response CI lookup rules.

   図 : 1. Example of a CI lookup rule using a condition builder for V12.0

   

   図 : 2. Example of a CI lookup rule using a script prior to V12.0

   

• Ignore CI classes
  To ignore some configuration item (CI) classes, for example Load Balancer [cmdb_ci_lb], when running CI Lookup Rules, set the ignoreCIClass [sn_sec_cmn.ignoreCIClass] system property.
• Filter decommissioned CIs
  Filter decommissioned configuration items (CIs) while running the CI lookup rules. To filter decommissioned CIs when running the Security Operations CMDB CI lookup rules, set the filterOutDecommissionedCI [sn_sec_cmn.filterOutDecommissionedCI] system property to true.
• Auto-promote CIs
  Edit the JSON string in the autoPromoteFields [sn_sec_cmn.autoPromoteFields] system property so your configuration item (CI) lookup rules auto-promote all the Security Operations CMDB CIs to matching entries in the [cmdb_ci] table.

関連資料

• Vulnerability Response vulnerable item form fields