statem/statem_dtls.c in the DTLS implementation in OpenSSL 1.1.0 before 1.1.0a allocates memory before checking for an excessive length, which might allow remote attackers to cause a denial of service (memory consumption) via crafted DTLS messages.
https://www.tenable.com/security/tns-2016-21
https://www.tenable.com/security/tns-2016-20
https://www.tenable.com/security/tns-2016-16
https://www.openssl.org/news/secadv/20160922.txt
https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=df6b5e29ffea2d5a3e08de92fb765fdb21c7a21e
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://bto.bluecoat.com/security-advisory/sa132
http://www.securitytracker.com/id/1036885
http://www.securityfocus.com/bid/93151
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
http://www-01.ibm.com/support/docview.wss?uid=swg21995039
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759