Provide references for CVE-2017-3840.
Where can I find more information about CVE-2017-3840?
References are available at: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170215-acs2, http://www.securitytracker.com/id/1037837, http://www.securityfocus.com/bid/96238.