Red Hat Satellite 5.6 and earlier does not disable the web interface that is used to create the first user for a satellite, which allows remote attackers to create administrator accounts.
https://bugzilla.redhat.com/show_bug.cgi?id=1024614
https://access.redhat.com/site/articles/539283
http://rhn.redhat.com/errata/RHSA-2013-1514.html
http://rhn.redhat.com/errata/RHSA-2013-1513.html
http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00009.html