NOC WAF Protects Against

SQL Injection (SQLi) Attacks

"A SQL injection attack consists of insertion or “injection” of a SQL query via the input data from the client to the application. A successful SQL injection exploit can read sensitive data from the database, modify database data (Insert/Update/Delete), execute administration operations on the database (such as shutdown the DBMS), recover the content of a given file present on the DBMS file system and in some cases issue commands to the operating system."


- Open Web Application Security Project (OWASP)

Understanding SQL Injection Vulnerabilities

SQL Injections

SQL Injection (SQLi) vulnerabilities are one of the more well-known vulnerabilities. But they fall into a a much broader vulnerability category as defined by OWASP - Injection.


In 2021, the OWASP organization dropped Injection vulnerabilities from the #1 spot in their Top 10 list, to #3. Do not let the reduced rating trick you into thinking it's any less important.


SQL Injection vulnerabilities, specifically, are considered one of the most dangerous for web applications (second only to Remote Code Execution (RCE) vulnerabilities). Any application that leverages a database to store data is susceptible to a SQLi vulnerability.

SQLi Outcomes

SQL Injection vulnerabilities are used to exploit an application by gaining access to it's back-end database. Some of the common things a bad actor might do with a SQLi vulnreabilities include:

Retrieving Hidden Data;

Subverting application logic;

Reading the database;

Blind SQL Injection;

The NOC WAF is able to mitigate attacks that try to abuse SQLi vulnerabilities.

Protecting Against SLQ Injection Vulnerabilities

Cloud-Based Protection

SQLi vulnerabilities get exploited on web applications when bad actors are able pass manipulated queries to the database via the web application.


NOC helps mitigate attacks that try to exploit these vulnerabilities through its virtual hardening and patching technology. As a reverse proxy, NOC sits between your web application, and the internet. When a user queries your web application, our network will inspect the query structure and ensure that it is not attempting to exploit a weakness.


One of the key features of the WAF platform is its ability to Virtually Harden and Patch web applications at the edge. This technology protects the application by preventing the attacker from hitting the application back-end.  The attack registers on our network, we detect, strip it from the request, and block the attacker from attempting further exploits against your application.

Secure Coding Best Practice

Flaws in code are bound to happen, but there are things all software developers can do to help reduce the risk of introducing a SQLi vulnerability into their application.

Use of Prepared Statement (with Parameterized Queries)

Option 2: Use of Stored Procedures

Option 3: Allow-list Input Validation

Option 4: Escaping all User Supplied Input

Option 5: Enforcing Least Privilege

As long as applications make use of Databases to store and access data we can expect to see SQLi at the top of the security threats. The steps above are practical intentionally, and are designed to help teams implement a secure coding mindset.