It was discovered that in fence-agents prior to 4.3.4, including non-ASCII characters in a guest VM's comment or other fields would cause fence_rhevm to exit with an exception. In cluster environments, this could lead to preventing automated recovery or otherwise denying service to clusters of which that VM is a member.
Created fence-agents tracking bugs for this issue:
Affects: fedora-all [bug 1716706]
Name: Sandro Emma (Deutsche Börse AG), Jens Kühnel (Deutsche Börse AG)
This issue has been addressed in the following products:
Red Hat Enterprise Linux 7
Via RHSA-2019:2037 https://access.redhat.com/errata/RHSA-2019:2037
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):