The tls_decrypt_ticket function in ssl/t1_lib.c in OpenSSL before 1.1.0 does not consider the HMAC size during validation of the ticket length, which allows remote attackers to cause a denial of service via a ticket that is too short.
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://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.asc
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312
https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=e97763c92c655dcf4af2860b3abd2bc4c8a267f9
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://bto.bluecoat.com/security-advisory/sa132
https://access.redhat.com/errata/RHSA-2018:2187
https://access.redhat.com/errata/RHSA-2018:2186
https://access.redhat.com/errata/RHSA-2018:2185
http://www.splunk.com/view/SP-CAAAPUE
http://www.splunk.com/view/SP-CAAAPSV
http://www.securitytracker.com/id/1036885
http://www.securityfocus.com/bid/92628
http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
http://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.html
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://rhn.redhat.com/errata/RHSA-2016-1940.html
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759