Provide references for CVE-2015-3644.
Where can I find more information about CVE-2015-3644?
References are available at: http://www.debian.org/security/2015/dsa-3299, http://www.securityfocus.com/bid/74659, https://www.stunnel.org/CVE-2015-3644.html, http://www.securitytracker.com/id/1032324.