Comment 2 for bug 1750633

I'd really appreciate a backport of the fix. Some other distributions shipping with paramiko 2.0 ship it already, for example mageia (https://advisories.mageia.org/MGAA-2018-0077.html)

It affects everyone doing backups with duplicity over ssh, most notably when using cronjobs. Probably quite a big group. Unfortunately it's not enough to just set the log verbosity to error.