A good example of this is a web application which sets a cookie on the user’s system once the user logs in successfully. As far as web authentication is concerned, cookies can be a valuable resource in maintaining the state between the user and the website. Cookies can include valuable information about the user, which could be the user/pass in encoded or encrypted format, the session ID value etc. 2) Cookie StealingĬookies are another source of valuable information that is stored on the user’s computer. Also note, it is not necessary that the credentials are always validated in the backend with a SQL statement, in which case SQL Injection will not work. Note that SQL Injection in itself is a very massive topic and the case discussed in this article in one of the simplest forms of SQL Injection. Input validation must be done in order to protect from SQL Injection.
#Wildstar 2 part authentication password#
Hence there was no use of any password in this case. Hence the SQL statement selects the user admin if a user with the username “admin” is available in its database otherwise it just returns the first user in the database because the BOOL value of the statement evaluates to TRUE. SELECT * FROM USER_TABLE WHERE USERNAME = ‘admin’ OR 1=1. If we look closely at the SQL statement, the statement will only get executed until the following line, as all the other characters are commented out because of the dashes “–“. SELECT * FROM USER_TABLE WHERE USERNAME = ‘admin’ OR 1=1 –‘ and PASSWORD = ‘blah’ Let’s say the user enters the username as “admin’OR 1=1 –” and the password as “blah”. SELECT * FROM USER_TABLE WHERE USERNAME = ‘Username’ and PASSWORD = ‘Password’ The Username and Password are the values of the username and password passed by the user which is then sent to this SQL Statement without input validation. Let’s say the SQL statement which is responsible for validating the input sent by the user looks something like this. If the user’s input is not validated properly, then the attacker has the capability to inject the SQL statement with malicious queries which will allow him to bypass the authentication. This technique is valid in cases when the user’s credentials are processed at the backend in an SQL statement. This technique however does not work with HTML-Basic authentication type because, as we remember from the first part of this article, HTML-Basic requires us to send the username and password with every request. Bypassing authentication is one of the most useful techniques as it does not require us to know the user’s credentials in order to access the user’s profile.
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