CVE-2011-2523

vsftpd 2.3.4 downloaded between 20110630 and 20110703 contains a backdoor which opens a shell on port 6200/tcp.

Date published : 2019-11-27

http://packetstormsecurity.com/files/162145/vsftpd-2.3.4-Backdoor-Command-Execution.html

https://access.redhat.com/security/cve/cve-2011-2523