Bedeng PSP 1.1 - 'index.php?a.nsub' SQL Injection

source: https://www.securityfocus.com/bid/15583/info
  
Bedeng PSP is prone to SQL injection vulnerabilities. These issues are due to a failure in the application to properly sanitize user-supplied input 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. 

/index.php?cwhere=a.nsub=[SQL]