add osvdb ref for openx backdoor

Author: swtornio

modules/exploits/multi/http/openx_backdoor_php.rb

@@ -29,6 +29,7 @@ def initialize(info = {})
 			'License'        => MSF_LICENSE,
 			'References'     => [
 					[ 'CVE', '2013-4211' ],
+					[ 'OSVDB', '96073' ],
 					[ 'URL', 'http://www.heise.de/security/meldung/Achtung-Anzeigen-Server-OpenX-enthaelt-eine-Hintertuer-1929769.html'],
 					[ 'URL', 'http://forum.openx.org/index.php?showtopic=503521628'],
 				],