The default Flash cross-domain policy (crossdomain.xml) in Revive Adserver before 3.2.2 does not restrict access cross domain access, which allows remote attackers to conduct cross domain attacks via unspecified vectors.
http://www.securityfocus.com/archive/1/536633/100/0/threaded
http://www.revive-adserver.com/security/revive-sa-2015-001
http://seclists.org/fulldisclosure/2015/Oct/32
http://packetstormsecurity.com/files/133893/Revive-Adserver-3.2.1-CSRF-XSS-Local-File-Inclusion.html