389 Directory Server in Red Hat Enterprise Linux Desktop 6 through 7, Red Hat Enterprise Linux HPC Node 6 through 7, Red Hat Enterprise Linux Server 6 through 7, and Red Hat Enterprise Linux Workstation 6 through 7 allows remote attackers to infer the existence of RDN component objects.
https://github.com/389ds/389-ds-base/commit/0b932d4b926d46ac5060f02617330dc444e06da1
https://bugzilla.redhat.com/show_bug.cgi?id=1347760