Which of the following BEST describes a SQL Injection attack?

A.
The attacker attempts to have the receiving server pass information to a back-end database from which it
can compromise the stored information.

B.
The attacker attempts to have the receiving server run a payload using programming commonly found on
web servers.

C.
The attacker overwhelms a system or application, causing it to crash and bring the server down to cause an
outage.

D.
The attacker overwhelms a system or application, causing it to crash, and then redirects the memory
address to read from a location holding the payload.

Explanation:
SQL injection is a code injection technique, used to attack data-driven applications, in which malicious SQL
statements are inserted into an entry field for execution (e.g. to dump the database contents to the attacker).
SQL injection must exploit a security vulnerability in an application’s software, for example, when user input is
either incorrectly filtered for string literal escape characters embedded in SQL statements or user input is not
strongly typed and unexpectedly executed. SQL injection is mostly known as an attack vector for websites but
can be used to attack any type of SQL database.