Package: sshguard
Version: 2.3.1-1
Severity: grave
Tags: security
Justification: renders package unusable

Dear Maintainer,

sshguard blocks the remote ssh client at 1st mistake regardless of THRESHOLD
option value

OS: Debian Linux 10.9
SSH server: openssh-server 1:7.9p1-10+deb10
sshguard version: 2.3.1-1

Changing the 'THRESHOLD' option in /etc/sshguard/sshguard.conf file doesn't
have effect in the sshguard behavior! It always blocks the ssh client after 1st
mistake! (bad userid, bad password, ...)

It seems that the issue is due to a mis-configuration in debian
(https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=928525),
or is caused by some bug in upstream that is claimed to be fixed in newer
versions (https://bitbucket.org/sshguard/sshguard/issues/140/sshguard-blocks-
the-remote-client-at-1st).



-- System Information:
Debian Release: 10.9
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.19.0-16-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_WARN, TAINT_OOT_MODULE, 
TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), 
LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages sshguard depends on:
ii  libc6     2.28-10
ii  lsb-base  10.2019051400

Versions of packages sshguard recommends:
ii  nftables  0.9.0-2

sshguard suggests no packages.

-- no debconf information

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