Forman before 1.7.4 does not verify SSL certificates for LDAP connections, which allows man-in-the-middle attackers to spoof LDAP servers via a crafted certificate.
https://groups.google.com/forum/#%21topic/foreman-announce/9ZnuPcplNLI
https://github.com/theforeman/foreman/pull/2265
https://access.redhat.com/errata/RHSA-2015:1592