If you are looking for standalone Python or Bash scripts to understand the automation of this attack, you can find hundreds of open-source Proof of Concept (PoC) scripts on GitHub.
While the FTP session hangs, the backdoor shell is now listening on port 6200. Open a second terminal and connect to it.
: Block port 6200 at your network firewall to prevent unauthorized shell access even if a vulnerable daemon is running. vsftpd 208 exploit github link
In late June 2011, an unknown attacker managed to compromise the master download server for
The backdoor is a (the server opens a port and waits for the attacker to connect) rather than a reverse shell. Because vsftpd runs as root, the resulting shell also runs as root. If you are looking for standalone Python or
Ensure you are running a modern, supported version of VSFTPD downloaded from official package repositories (like apt or yum ) rather than unverified legacy source archives.
Ruby scripts designed to integrate directly with the Metasploit Framework ( exploit/unix/ftp/vsftpd_234_backdoor ). : Block port 6200 at your network firewall
If you're using vsftpd 2.0.8, it's highly recommended to update to a newer version of vsftpd, as the vulnerability has been patched in later versions.
nc target_ip 6200
USER :) PASS whatever
Block unneeded ports (like 6200) at your network firewall to prevent unauthorized access even if a backdoor is triggered.