source: https://www.securityfocus.com/bid/14039/info WhatsUp Professional is prone to an SQL injection vulnerability affecting its Web-based front end. This issue is due to a failure in the application to properly sanitize user-supplied input to the 'login.asp' script before using it in an SQL query. Successful exploitation could result in a compromise of the application, disclosure or modification of data, or may permit an attacker to exploit vulnerabilities in the underlying database implementation. It should be noted that by supplying a 'or' value through the 'password' parameter, an attacker can gain unauthorized access to an affected site. The following proof of concept is available: Reset the Admin user password with a blank password: - 'UPDATE WebUser SET sPassword=DEFAULT WHERE sUserName='Admin'-- Elevate Guest user privileges to Admin privileges: - 'UPDATE WebUser SET nUserRightsMask=-1 WHERE sUserName='guest'--