Multiple SQL injection vulnerabilities in Portale e-commerce Creasito (aka creasito e-commerce content manager) 1.3.16, when magic_quotes_gpc is disabled, allow remote attackers to execute arbitrary SQL commands via the username parameter to (1) admin/checkuser.php and (2) checkuser.php.
Improper Neutralization of Special Elements used in an SQL Command The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.