A buffer overflow, or buffer overrun, occurs when more data is put into a fixed-length buffer than the buffer can handle. SQL injection attacks are a type of injection attack, in which SQL commands are injected into data-plane input in order to effect the execution of predefined SQL commands. The severity of a buffer overflow depends on what is stored in the adjacent memory regions. A buffer is a sequential section of memory allocated to contain anything from a character string to an array of integers. A successful SQL injection exploit can read sensitive data from the database, modify database data (Insert/Update/Delete), execute administration operations on the database (such as shutdown the DBMS), recover the content of a given file present on the DBMS file system and in some cases issue commands to the operating system. Writing outside the bounds of a block of allocated memory can corrupt data, crash the program, or cause the execution of malicious code.ДЄ SQL injection attack consists of insertion or 'injection' of a SQL query via the input data from the client to the application.

A buffer overflow occurs when more data is put into the buffer than its capacity.

In this case, a buffer is a sequential section of memory allocated to contain anything from a character string to an array of integers. A buffer is a sequential area of memory allocated to contain data. Source: A buffer overflow condition exists when a program attempts to put more data in a buffer than it can hold or when a program attempts to put data in a memory area past a buffer. In the case of stack buffer overflows, the issue applies to the stack, which is the memory space used by the operating system primarily to store local variables and function return addresses. There are two primary types of buffer overflow vulnerabilities: stack overflow and heap overflow. Each of these attacks is quite different. Types of Buffer Overflow Vulnerabilities.

Buffer overflow