GIAC Foundational Cybersecurity Technologies Practice Test

What kind of vulnerability is commonly associated with FTP services?

1. Buffer Overflow

2. Integer Overflow

3. Command Injection

4. Nothing, it is completely fine

The correct answer is: Buffer Overflow

Buffer overflow vulnerabilities are often associated with FTP (File Transfer Protocol) services due to the way these services handle input and data. When an FTP server processes commands or data from a client, it may not properly validate the length of the input. If the input exceeds the allocated space in memory, it can overwrite adjacent memory, leading to unexpected behavior or allowing an attacker to execute arbitrary code. This vulnerability can be exploited if an attacker sends specially crafted input that exceeds the expected buffer size. By doing so, they can manipulate the execution flow of the program and potentially gain control over the FTP service or the server itself. This makes buffer overflow one of the common vulnerabilities in FTP services, highlighting the importance of robust input validation and memory management in mitigating these risks. The other options, such as integer overflow or command injection, do occur in various applications but are not as specifically tied to the FTP protocol itself as buffer overflow vulnerabilities are. Additionally, the idea that FTP services are "completely fine" overlooks the many known issues and vulnerabilities that arise from their design and usage, particularly in unsecured environments.