pacemaker is vulnerable to denial of service (DoS) attacks. The vulnerability exists as 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.
access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/7.3_Release_Notes/index.html
access.redhat.com/security/updates/classification/#moderate
bugzilla.redhat.com/show_bug.cgi?id=1240330
bugzilla.redhat.com/show_bug.cgi?id=1268313
bugzilla.redhat.com/show_bug.cgi?id=1281450
bugzilla.redhat.com/show_bug.cgi?id=1284069
bugzilla.redhat.com/show_bug.cgi?id=1287315
bugzilla.redhat.com/show_bug.cgi?id=1288929
bugzilla.redhat.com/show_bug.cgi?id=1304771
bugzilla.redhat.com/show_bug.cgi?id=1310486
bugzilla.redhat.com/show_bug.cgi?id=1312094
bugzilla.redhat.com/show_bug.cgi?id=1314157
bugzilla.redhat.com/show_bug.cgi?id=1323544
bugzilla.redhat.com/show_bug.cgi?id=1327469
bugzilla.redhat.com/show_bug.cgi?id=1338623
bugzilla.redhat.com/show_bug.cgi?id=1345876
bugzilla.redhat.com/show_bug.cgi?id=1346726
bugzilla.redhat.com/show_bug.cgi?id=1361533
bugzilla.redhat.com/show_bug.cgi?id=1372009
rhn.redhat.com/errata/RHSA-2016-2578.html