A flaw was found in the way an LDAP search expression could crash the shared LDAP server process of a samba AD DC in samba before version 4.10. An authenticated user, having read permissions on the LDAP server, could use this flaw to cause denial of service.
CREATE(Triage): {Link=https://nvd.nist.gov/vuln/detail/CVE-2019-3824 User=admin}
