I understand you're looking for information about vsftpd version 2.0.8 (often written as 2.0.8, not 208) and potential security exploits. However, I should clarify a few important points:
You might ask: "Is downloading these exploits from GitHub illegal?" vsftpd 208 exploit github install
chmod +x exploit.py python3 exploit.py
The exploit is available on GitHub, and installing it is relatively straightforward. Here are the steps: I understand you're looking for information about vsftpd
Because the backdoor is in the authentication handshake, the exploit is trivially simple to execute manually. However, the GitHub scripts automate the process. CVE-2011-2523 – vsftpd 2