A SQL injection attack is a type of attack that exploits a vulnerability in a web application that uses user-supplied data to construct SQL statements that interact with a database. By inserting malicious commands into the database, an attacker can execute arbitrary SQL queries or commands on the database server, which may result in data theft, data manipulation, or command execution. Machine 1 is vulnerable to SQL injection because it does not properly validate or sanitize the user input before using it in a SQL statement. Therefore, inserting malicious commands into the database would allow the attacker to gain access to machine 1.
A buffer overflow attack is a type of attack that exploits a vulnerability in a program that does not check the boundaries of a buffer (a temporary storage area for data) before copying data into it. By overflowing the buffer’s memory, an attacker can overwrite adjacent memory locations, which may result in corrupting data, crashing the program, or executing malicious code. Machine 2 is vulnerable to buffer overflow because it does not properly handle the size or length of the data that it receives from the user or another source. Therefore, overflowing the buffer’s memory would allow the attacker to gain access to machine 2.
Sniffing the packets between the two hosts is a passive attack that involves capturing and analyzing the network traffic that flows between the two machines. This attack may reveal sensitive information, such as credentials, session tokens, or database queries, but it does not directly allow the attacker to gain access to either machine. Sending continuous pings is a type of denial-of-service attack that involves flooding the target machine with ICMP echo request packets, which may consume its network bandwidth or processing resources, but it does not directly allow the attacker to gain access to either machine. Therefore, neither sniffing the packets nor sending continuous pings would allow the attacker to gain access to machine 1 but not machine 2. References :=
Implementing and Operating Cisco Security Core Technologies (SCOR) v1.0, Module 3: Web Security, SQL Injection Attacks
Understanding SQL Injection - Cisco, SQL Injection Explained
Buffer Overflow and SQL Injection: To Remotely Attack and … - Springer, Buffer Overflow and SQL Injection Attacks
