Web Wiz Forums 7.7a uses invalid logic to determine user privileges, which allows remote attackers to (1) block arbitrary IP addresses via pop_up_ip_blocking.asp or (2) modify topics via pop_up_topic_admin.asp.
https://exchange.xforce.ibmcloud.com/vulnerabilities/16031
https://exchange.xforce.ibmcloud.com/vulnerabilities/16030
http://www.securityfocus.com/bid/10255
http://securitytracker.com/id?1010012
http://secunia.com/advisories/11525
http://archives.neohapsis.com/archives/fulldisclosure/2004-04/1119.html