Pacemaker before 1.1.15, when using pacemaker remote, might allow remote attackers to cause a denial of service (node disconnection) via an unauthenticated connection.
https://github.com/ClusterLabs/pacemaker/commit/5ec24a2642bd0854b884d1a9b51d12371373b410
http://www.securityfocus.com/bid/93261
http://www.openwall.com/lists/oss-security/2016/10/01/1
http://rhn.redhat.com/errata/RHSA-2016-2578.html
http://lists.opensuse.org/opensuse-updates/2016-12/msg00077.html
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2016-11/msg00038.html