denyhosts blocks localhost

[Jerry Quinn]

I got onto my machine this morning and found networking broken. I traced it to the fact that denyhosts added 127.0.0.1 to the deny list. I couldn't find any events in the log that look like ssh attempts coming from localhost, but it still got added.

I would consider this an important bug because networking failed in a non-obvious way, which could cause data loss for network connections.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: denyhosts 2.10-2
Uname: Linux 5.7.1-050701-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.15
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Jun 29 10:56:03 2020
InstallationDate: Installed on 2020-05-29 (30 days ago)
InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: denyhosts
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.denyhosts.conf: [inaccessible: [Errno 13] Permission denied: '/etc/denyhosts.conf']