One of OWASP’s top ten vulnerabilities. Injection of malicious SQL (Structured Query Language) code into the underlying database is one type of web application vulnerability known as SQL injection. This happens when an attacker is able to manipulate the input parameters of a web application. It is a pervasive and dangerous security flaw that can result in unauthorized access, data breaches, data manipulation, or even the complete compromise of a web application and the database that goes with it.
A brief explanation of how SQL injection functions are provided here:
User input: Data entry by users into web applications frequently takes the form of filling out forms, using search fields, or using other input methods.
Improper Input Handling: A web application becomes vulnerable to SQL injection attacks if user input is not properly validated, sanitized, or parameterized before being used in SQL queries.
Injection of malicious SQL code: An attacker can take advantage of this flaw by providing carefully constructed input that contains SQL commands. The attacker could, for instance, alter the structure of the SQL query or inject new SQL code by entering particular characters or strings.
Unauthorized database access: If the injected SQL code modifies the intended behaviour of the query, the web application’s blind incorporation of the manipulated input into the SQL query can result in this. Bypassing authentication, extracting private information, changing or deleting data, or even executing arbitrary commands on the database server are all possible as a result.
SQL injection attacks can have serious repercussions, including the disclosure of private customer information, monetary loss, reputational harm, and legal liabilities. Therefore, it is crucial to use secure coding techniques like input validation, parameterized queries, and output encoding to shield web applications from SQL injection vulnerabilities.
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