Уровень 0 · материалов: 4
В кластер входят документы, описывающие методы предотвращения атак типа инъекция путем разделения управляющих структур кода и пользовательских данных.
Общие признаки: защита от SQL-инъекций, разделение данных и инструкций, экранирование данных, безопасность ввода и вывода
Группа выше: Инъекции и межсайтовый скриптинг
Смысл: The main idea is that SQL injection prevention is achieved not through fragmented 'cleaning' of input, but through the strict separation of the SQL command structure from the data it processes, utilizing placeholders for values and white lists for structural elements.
To guarantee protection against SQL injections in PHP/MySQL, use placeholders for all data and white lists for identifiers, while avoiding the myth that simple string escaping or input filtering is sufficient.
Смысл: The main idea is that prepared statements (bind variables) are the most effective way to prevent SQL injection and optimize database performance because they decouple the executable command from the user-provided data.
Prepared statements enhance security and performance by separating SQL logic from data, effectively eliminating SQL injection risks and reducing server-side parsing overhead.
Смысл: The main idea is that security should be handled at the point of output (contextual escaping) rather than the point of input (sanitization) to maintain data integrity and ensure robust protection against injection attacks.
Do not filter 'dangerous' characters upon input; instead, store data raw and escape it based on the specific output context (HTML, SQL, etc.) to ensure both security and data accuracy.
Смысл: The main idea is that 'escaping' is a fundamental necessity in programming to prevent ambiguity and security vulnerabilities. When user-provided text is treated as executable code or structural markers by a system, it leads to critical flaws like SQL injection and XSS; therefore, strict separation of data from instructions is mandatory.
Escaping is the process of neutralizing special characters in text to prevent computers from confusing user data with executable commands, thereby stopping security attacks like SQL injection and XSS.