| Step | Action | |------|--------| | 1 | Connects to port 21 (FTP) | | 2 | Reads the server banner | | 3 | Sends USER backdoor:) | | 4 | Sends any password | | 5 | Attempts a second connection to port 6200 | | 6 | Runs arbitrary commands as root |
You're referring to the vsftpd 2.3.4 exploit, also known as CVE-2011-2523. This vulnerability affects vsftpd 2.3.4, a popular FTP server software. I'll provide a guide on how to address this issue. vsftpd 208 exploit github fix
vsftpd 2.0.8 is not vulnerable . The vulnerable version is the backdoored 2.3.4 . | Step | Action | |------|--------| | 1
A search for vsftpd 2.0.8 exploit github returns dozens of proof-of-concept (PoC) and automated exploit scripts. Most follow the same pattern. vsftpd 2
Assume the backdoor was triggered. Run a rootkit scan:
The attacker inserted a backdoor into the vsf_secutil.c and main.c files. This backdoor allowed remote attackers to bypass authentication and gain a root shell.
Do NOT download vsftpd from third-party mirrors. Only use the official site: https://security.appspot.com/vsftpd.html