CVE-2010-20103

ProFTPD 1.3.3c contains a backdoor in its source tarball (Nov 28–Dec 2, 2010) enabling a hidden FTP command trigger that executes arbitrary shell commands as root. This is a remote, unauthenticated escalation. Remediate by upgrading to ProFTPD 1.3.3d or newer (per connected SNYK advisory).