ifdate 2.x sends a redirect to the web browser but does not exit when administrative credentials are missing, which allows remote attackers to obtain administrative access via a direct request for the admin/ URI.
https://exchange.xforce.ibmcloud.com/vulnerabilities/34257
http://www.securityfocus.com/bid/23971
http://www.securityfocus.com/archive/1/468545/100/0/threaded
http://www.expw0rm.com/ifdate-2-unauthorized-administrative-access-bug_no285.html
http://securityreason.com/securityalert/2707