Systems without vulnerabilities - exploitable and patchable critical and high

Description

The percentage of systems that were active in the last 30 days that have resolved exploitable, patchable vulnerabilities, providing critical insight into the organisation's ability to minimize exposure to known threats and effectively reduce the attack surface.

How we measure it

Find all active hosts per your vulnerability management system. Join the hosts with the vulnerability database, and filter the vulnerabilities on the criteria as defined in the metric definition.

Meta Data

Attribute	Value
Metric id	vm_posture_exploitable_patchable
Category	Vulnerability Management
SLO	80.00% - 95.00%
Weight	0.8
Type

References

Framework	Ref	Domain	Control
ISO 27001:2022	A.8.8	8 Technological controls	Management of technical vulnerabilities
CIS 8.1	7.5	Continuous Vulnerability Management	Perform Automated Vulnerability Scans of Internal Enterprise Assets
CIS 8.1	7.6	Continuous Vulnerability Management	Perform Automated Vulnerability Scans of Externally-Exposed Enterprise Assets
NIST CSF v2.0	ID.RA-01	Risk Assessment (ID.RA)	ID.RA-01: Vulnerabilities in assets are identified, validated, and recorded

Code

SELECT
  host.hostname AS resource,
  'host' as resource_type,
  CASE
    WHEN count(cve.aid) = 0 THEN 1
    ELSE 0
  END AS compliance,
  CAST(count(cve.*) as text) AS detail
FROM
  {{ ref('crowdstrike_hosts') }} AS host
LEFT JOIN
  {{ ref('crowdstrike_vulnerabilities') }} AS cve
ON
  host.device_id = cve.aid
  AND cve.status IN ('open', 'reopen')
  AND coalesce(cve.cve.remediation_level = 'O', false)
  AND coalesce(cve.cve.exploit_status > 0, false)
WHERE
  CURRENT_DATE - CAST(STRPTIME(host.last_seen, '%Y-%m-%dT%H:%M:%SZ') AS DATE) < 30
GROUP BY
  host.hostname

SELECT
  asset.hostname AS resource,
  'host' AS resource_type,
  CASE
    WHEN count(cve.plugin.id) = 0 THEN 1
    ELSE 0
  END AS compliance,
  CAST(count(cve.plugin) AS text) AS detail
FROM
  {{ ref('tenable_assets') }} AS asset
LEFT JOIN
  {{ ref('tenable_vulnerabilities') }} AS cve
ON
  asset.uuid = cve.asset.uuid
  AND cve.state IN ('OPEN', 'REOPENED')
  AND cve.plugin.exploit_available IS TRUE
  AND cve.plugin.has_patch IS TRUE
WHERE
  CURRENT_DATE - CAST(asset.last_seen AS DATE) < 30
GROUP BY
  asset.hostname