This update for corosync provides the following fixes:
CVE-2018-1084: Integer overflow in totemcrypto:authenticatenss2_3() could lead to command execution (bsc#1089346)
Providing an empty uid or gid results in coroparse adding uid 0. (bsc#1066585)
Fix a problem that was causing corosync memory to increase on ring breakup. (bsc#1083030)
Fix a problem with configuration file incompatibilities that was causing corosync to not
work after upgrading from SLE-11-SP4-HA to SLE-12/15-HA. (bsc#1083561)