CVE-2019-18217
ProFTPD before 1.3.6b and 1.3.7rc before 1.3.7rc2 allows remote unauthenticated denial-of-service due to incorrect handling of overly long commands because main.c in a child process enters an infinite loop.
Date published : 2019-10-20
https://seclists.org/bugtraq/2019/Nov/7
https://cert-portal.siemens.com/productcert/pdf/ssa-940889.pdf