Integer overflow in the MDC2_Update function in crypto/mdc2/mdc2dgst.c in OpenSSL before 1.1.0 allows remote attackers to cause a denial of service (out-of-bounds write and application crash) or possibly have unspecified other impact via unknown vectors.
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://nodejs.org/en/blog/vulnerability/september-2016-security-releases/
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312
https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=55d83bf7c10c7b205fffa23fa7c3977491e56c07
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://bugzilla.redhat.com/show_bug.cgi?id=1370146
https://bto.bluecoat.com/security-advisory/sa132
http://www.securitytracker.com/id/1036885
http://www.securityfocus.com/bid/92984
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