dirsys/modules/auth.php in JBC Explorer 7.20 RC1 and earlier does not require authentication, which allows remote attackers to (1) delete auth.inc.php via the suppr parameter, and (2) re-create the auth.inc.php file with contents that specify a new account name and password for JBC Explorer via the login and password parameters.
https://www.exploit-db.com/exploits/4608
https://exchange.xforce.ibmcloud.com/vulnerabilities/38269
http://www.securityfocus.com/bid/26332
http://www.securityfocus.com/archive/1/483268/100/0/threaded
http://securityreason.com/securityalert/3358