You know that Injection vulnerabilities are one of the most critical vulnerabilities found ina web application. Explain how an Injection attack works and write a sample codeexplaining how SQL Injection vulnerability can be mitigated using Prepared Statements.
Question
You know that Injection vulnerabilities are one of the most critical vulnerabilities found ina web application. Explain how an Injection attack works and write a sample codeexplaining how SQL Injection vulnerability can be mitigated using Prepared Statements.
Solution
An injection attack occurs when an attacker can insert malicious data into a query, command, or request that is then processed by an application. This can lead to data breaches, loss of data integrity, and other serious issues.
SQL Injection is a type of injection attack where an attacker can manipulate SQL queries run by a web application. This is done by inserting malicious SQL code into user input fields that are then included in SQL queries to the database. If the application does not properly sanitize the user input, the attacker's malicious code is run on the database.
Here's a simple example of how an SQL Injection attack might work:
- A web application asks for a user's username and password to log in.
- The application creates an SQL query to check the database for a matching username and password. The query might look something like this:
SELECT * FROM users WHERE username = '[user input]' AND password = '[user input]'. - An attacker enters a username of
admin' --and a password ofanything. The resulting SQL query isSELECT * FROM users WHERE username = 'admin' --' AND password = 'anything'. - The
--in SQL is a comment marker, so everything after it is ignored. This means the query actually run on the database is `SELECT * FROM users WHERE username
Similar Questions
Question 1Which of the following countermeasures help developers prevent applications from becoming vulnerable to SQL injection attacks? 1 pointDesign the code such that it traps and handles exceptions appropriately Allow entries that contain binary data, escape sequences, and comment characters Never use a prepared statement to create a parameterized query Construct dynamic SQL with concatenated input values 2.Question 2Which of the following practices helps developers defend against SQL injection attacks? 1 pointAlways construct dynamic SQL with concatenated input values Build Transact-SQL statements directly from user input Never implement multiple layers of validation Test the content of string variables and accept only expected values
What does SQL injection exploit?1 pointA) Network firewallsB) Browser vulnerabilitiesC) Database query executionD) User authentication systems
What are two examples of when SQL injections can take place?1 分When using the login form to access a siteWhen a malicious script exists in the webpage a browser loadsWhen a malicious script is injected directly on the serverWhen a user enters their credentials
8.Question 8Which of the following are coding techniques that can be used to prevent SQL injection attacks? Select three answers.1 pointInput validationInput sanitizationPublic key infrastructure (PKI)Prepared statements
Which of the following are areas of a website that are vulnerable to SQL injection? Select two answers.1 分User login pagesCredit card payment formsSocial media feedsPop-up advertisements
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