Multiple SQL injection vulnerabilities in Nicola Asuni TCExam before 11.3.009 allow remote authenticated users with level 5 or greater permissions to execute arbitrary SQL commands via the (1) user_groups[] parameter to admin/code/tce_edit_test.php or (2) subject_id parameter to admin/code/tce_show_all_questions.php.
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.