qh_core in Nagios Core 4.4.1 and earlier is prone to a NULL pointer dereference vulnerability, which allows attackers to cause a local denial-of-service condition by sending a crafted payload to the listening UNIX socket.Referenceshttps://knowledge.opsview.com/v5.4/docs/whats-newhttps://gist.github.com/fakhrizulkifli/40f3daf52950cca6de28ebec2498ff6ehttps://www.exploit-db.com/exploits/45082/https://knowledge.opsview.com/v5.3/docs/whats-newhttp://lists.opensuse.org/opensuse-security-announce/2020-04/msg00014.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-04/msg00022.html