FreeBSD : samba -- multiple vulnerabilities (54976998-f248-11e8-81e2-005056a311d1)

The samba project reports : All versions of Samba from 4.0.0 onwards are vulnerable to infinite query recursion caused by CNAME loops. Any dns record can be added via ldap by an unprivileged user using the ldbadd tool, so this is a security issue. When configured to accept smart-card...