Provide references for CVE-2019-1649.
Where can I find more information about CVE-2019-1649?
References are available at: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190513-secureboot, https://www.kb.cert.org/vuls/id/400865, http://www.securityfocus.com/bid/108350, https://www.us-cert.gov/ics/advisories/icsa-20-072-03.