Cross-site request forgery (CSRF) vulnerability in the save_main operation in the ad_perms section in admin.php in MKPortal allows remote attackers to modify privilege settings, as demonstrated using a getURL of admin.php within a .swf file contained in an IFRAME element, aka the "All Guests are Admin" attack.

BUGTRAQ:20070104 MkPortal "All Guests are Admin" Exploit | URL:http://www.securityfocus.com/archive/1/455894/100/100/threaded | OSVDB:33400 | URL:http://osvdb.org/33400 | SREASON:2137 | URL:http://securityreason.com/securityalert/2137