Joomla! is an content management system (CMS), which enables you to build Web sites and powerful online applications.Joomla! is an open source solution that is freely available to everyone.

SQL injection vulnerability exists in Joomla! In an SQL injection attack a SQL query is passed on to the application via the input data from the client. The query is then passed to the backend database.
The malicious data then produces database query results. The vulnerability lies in the getListQuery method of /administrator/components/com_fields/models/fields.php.$query->order does not sanitize the user input,
instead just concatenates it to form the SQL query.

A remote, unauthenticated attacker could exploit this vulnerability by sending a crafted HTTP request with an sql statement as shown in the image below.
Successful exploitation could result in disclosure of sensitive information.

SonicWALL Threat Research Team has researched this vulnerability and released following signature to protect their customers.

• IPS 12823: Joomla! com_fields SQL Injection