Abstract—SQL injection is an attack technique that exploits a security vulnerability occurring in the database layer of an application and a service. This is most often found within web pages with dynamic content. This paper provides taxonomy on SQL injection prevention and detection approaches. Furthermore, for each type of vulnerability, we provide descriptions of how attacks of that type could take advantage of that vulnerability and perform attack. We also present and analysis some of existing detection and prevention techniques against SQL injection attacks. Finally, we compare different type of approaches and techniques and provide a list of their deployment requirements.

Index Terms—SQL injection attack, SQL queries, web application, DBMS, taxonomy, web application security.

S. Sajjadi is with the Department of Electrical, Computer and IT Engineering, Islamic Azad University, Qazvin Branch, Qazvin, Iran (e-mail: s.sajjadi@qiau.ac.ir).
B. Tajalli Pour is with Department of Computer Engineering, Islamic Azad University, Tehran North Branch, Tehran, Iran (e-mail: bahar_tj@yahoo.com).

Cite:Sayyed Mohammad Sadegh Sajjadi and Bahare Tajalli Pour, "Study of SQL Injection Attacks and Countermeasures," International Journal of Computer and Communication Engineering vol. 2, no. 5, pp. 539-542, 2013.