Chapter-23, LEC-5 | Post Method SQLi | #cybersecurity #education #cybersport

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Post method SQL injection (SQLi) is a type of SQL injection attack that targets web applications that use HTTP POST requests to submit data to a server. In this type of attack, the attacker injects malicious SQL code into a web application's form fields that are submitted via HTTP POST. The attacker can then manipulate the SQL query executed by the server, potentially gaining unauthorized access to sensitive data or performing unauthorized actions on the server.

Post method SQL injection attacks can be carried out using various techniques, including input validation bypass, parameter tampering, and session hijacking. Input validation bypass involves entering data that does not conform to the expected format or range, such as entering a string into a numeric field. Parameter tampering involves modifying the parameters in a POST request to manipulate the SQL query executed by the server. Session hijacking involves taking over a user's session by stealing their session ID and injecting SQL code into their requests.

To prevent post method SQL injection attacks, developers should use prepared statements or parameterized queries to handle user input, which can prevent malicious code from being executed. Additionally, developers should validate and sanitize all user input, including data submitted via HTTP POST requests, to ensure that it conforms to the expected format and range.

Regular security testing and vulnerability assessments can also help identify and mitigate any vulnerabilities that may exist in the application, including post method SQL injection vulnerabilities. By taking these steps, developers can help ensure the security and integrity of their web applications and protect against potential data breaches or other types of attacks.