This bug was fixed in the package proftpd-dfsg - 1.3.5a-1ubuntu0.1
--------------- proftpd-dfsg (1.3.5a-1ubuntu0.1) xenial; urgency=medium
* Add upstream patch for CRLF to MLSD response (LP: #1613737).
-- Brian Morton <email address hidden> Fri, 1 Dec 2017 16:05:00 -0500
This bug was fixed in the package proftpd-dfsg - 1.3.5a-1ubuntu0.1
---------------
proftpd-dfsg (1.3.5a-1ubuntu0.1) xenial; urgency=medium
* Add upstream patch for CRLF to MLSD response (LP: #1613737).
-- Brian Morton <email address hidden> Fri, 1 Dec 2017 16:05:00 -0500