SQL Injection
A web application is
vulnerable to SQL injection to only one reason – end user string is not
properly validated
and is passed to a
dynamic SQL statement. The string input is usually passed directly to SQL
statement. However, the user input may be stored in the database and later
passed to a dynamic SQL statement. Because of the stateless nature of many web
applications, it is common to write data to the database between web pages.
This indirect type of attack is much more complex and requires in-depth
knowledge of the application.
Non Vulnerable:
SQL injection is
technique or a way to gain unauthorized access to a database via different
queries. SQL injection is technique or a way to gain unauthorized access to a
database via different queries. SQL injection attacks are simple in nature; an
attacker passes string input to an application
in hopes manipulating the SQL statements to his or her advantages.
The complexity of the attack involves exploiting SQL statements that may be unknown to the attackers. Open source
applications and commercial applications delivered with source
code and more vulnerable since an attack can find potentially vulnerable
statements prior to attack..
Wikipedia says SQL injection is a code injection technique
that exploits a security vulnerability occurring in the database layer of an
application. The vulnerability is present when the user input is either
incorrectly filtered for string literal escape characters
embedded in SQL statements or user input is not strongly typed and thereby
unexpectedly executed. It is an instance of a more general class of
vulnerabilities that can occur whenever a programming or scripting language is
embedded inside another. SQL injection attacks are also known as SQL insertion
attacks.
Following is the method
along with detailed introduction in images through which you can break into
website that is vulnerable.
SQL injection is technique or a way to gain unauthorized access to a database via different queries. SQL injection is technique or a way to gain unauthorized access to a database via different queries. SQL injection attacks are simple in nature; an attacker passes string input to an application in hopes manipulating the SQL statements to his or her advantages. The complexity of the attack involves exploiting SQL statements that may be unknown to the attackers. Open source applications and commercial applications delivered with source code and more vulnerable since an attack can find potentially vulnerable statements prior to attack..
Wikipedia says SQL injection is a code injection technique that exploits a security vulnerability occurring in the database layer of an application. The vulnerability is present when the user input is either incorrectly filtered for string literal escape characters embedded in SQL statements or user input is not strongly typed and thereby unexpectedly executed. It is an instance of a more general class of vulnerabilities that can occur whenever a programming or scripting language is embedded inside another. SQL injection attacks are also known as SQL insertion attacks.
Full presentation is available at link given below
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