A flaw was found in the 389 Directory Server that allows users to cause a crash in the LDAP server using ldapsearch with server side sort.
https://lists.debian.org/debian-lts-announce/2018/08/msg00032.html
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10935
https://access.redhat.com/errata/RHSA-2018:2757
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00033.html