will flag this version as "vsftpd 2.0.8 or later," often highlighting that it allows anonymous FTP login
To understand what a GitHub exploit payload does, it helps to look at the C code that the attacker sneaked into the 2.3.4 source file str.c :
To provide more relevant information, are you looking to found during a scan, or are you writing a tool for authorized testing? Share public link
# Quit the FTP session ftp.quit() except Exception as e: print("An error occurred: ", str(e))
The exploit for vsftpd 2.0.8 was publicly disclosed on GitHub and other exploit repositories. The exploit typically involves: vsftpd 2.0.8 exploit github
The server is often configured to allow anonymous logins with any password.
# Establish an FTP connection sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((host, port))
Restrict authenticated users to their home directories to prevent directory traversal attacks: chroot_local_user=YES allow_writeable_chroot=NO Use code with caution.
The backdoor inserted into vsftpd 2.3.4 was elegantly simple and devastatingly effective. When a remote user connected to the FTP server and included the smiley face sequence (without spaces) in their username during authentication, the backdoor would trigger. Upon successful trigger, the server would open a remote shell on TCP port 6200, granting the attacker full command execution capabilities on the target system. will flag this version as "vsftpd 2
: The backdoor was caught quickly by the maintainer, Chris Evans, but it remains a legendary example of a "supply chain attack" and is a staple module in the Metasploit Framework vsftpd 2.0.8 in Context
vsftpd 2.0.8 does not have a famous named exploit like its successor (v2.3.4), it is commonly targeted in penetration testing labs—specifically the machine on VulnHub. The vsftpd 2.0.8 "Exploit" Reality
The version 2.0.8 of vsftpd had a well-known vulnerability, which was a backdoor that was introduced into the source code. This backdoor was discovered in 2011 and allowed an attacker to access the FTP server with a specific username and password combination, regardless of the server's configuration.
vsftpd (Very Secure FTP Daemon) is a popular FTP server software used on Linux systems. In 2011, a critical vulnerability was discovered in vsftpd version 2.0.8, which allowed an attacker to execute arbitrary code on the server. # Establish an FTP connection sock = socket
ftp anonymous / anonymous (or blank) to list files, potentially accessing sensitive /home or configuration files.
The vsftpd 2.0.8 exploit on GitHub highlights the importance of keeping software up-to-date and monitoring for vulnerabilities. While exploits are publicly available, they should not be used for malicious purposes. System administrators should take steps to mitigate the vulnerability and ensure the security of their FTP servers.
Ensure you are running the latest stable version of VSFTPD maintained by your Linux distribution's package manager. Modern versions have completely excised compromised code and support secure FTPS configurations.