Provide references for CVE-2018-8840.
Where can I find more information about CVE-2018-8840?
References are available at: http://www.securityfocus.com/bid/103949, http://software.schneider-electric.com/pdf/security-bulletin/lfsec00000125/, https://www.tenable.com/security/research/tra-2018-07, https://ics-cert.us-cert.gov/advisories/ICSA-18-107-01.