Vsftpd 208 Exploit Github Fix |top| -

The VSFTPD 2.3.4 backdoor exploit remains one of the most famous examples of a supply-chain compromise in the history of open-source software. In 2011, an unknown attacker gained access to the master source code for the Very Secure FTP Daemon and inserted a malicious piece of code. This backdoor allowed anyone to gain a root shell on the target system simply by sending a specific string—a smiley face :)—as a username during the login process. While often referred to as "208" due to its association with port 6200, the vulnerability is officially tracked as CVE-2011-2523.

Since this was a compromised version of the software, the "fix" is not a code patch but rather ensuring you are using a clean, verified version of the software. vsftpd 208 exploit github fix

: Upon detection, the server executes a malicious function called vsf_sysutil_extra() . This function opens a shell listening on TCP port 6200 with root privileges. Exploitation The VSFTPD 2

CVE ID: CVE-2011-2523
Affected version: vsftpd 2.0.8 (only the tarball, not the source repository)
CVSS v2 Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C) While often referred to as "208" due to