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Bug#611218: marked as done (openssh-server: "PermitRootLogin no" doesn't prevent Root from logging in over ssh)

Your message dated Mon, 27 Feb 2017 21:34:36 +0200
with message-id <20170227193436.lt6jbbovu6fpucbm@localhost>
and subject line Closing squeeze-only bugs
has caused the Debian Bug report #611218,
regarding openssh-server: "PermitRootLogin no" doesn't prevent Root from logging in over ssh
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
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immediately.)


-- 
611218: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=611218
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: openssh-server
Version: 1:5.5p1-6
Severity: normal
Tags: squeeze

My /etc/ssh/sshd_config says:

PermitRootLogin no

yet I can still log in from another machine to root:

  phil@xanthus ~
  $ ssh -S none arod.local -l root
  root@arod.local's password: 
  Linux arod 2.6.32-5-powerpc #1 Fri Dec 10 16:30:49 UTC 2010 ppc

  The programs included with the Debian GNU/Linux system are free software;
  the exact distribution terms for each program are described in the
  individual files in /usr/share/doc/*/copyright.
 
  Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
  permitted by applicable law.
  Last login: Wed Jan 26 20:45:14 2011 from 217.155.153.12
  root@arod:~# 

This is a stock Debian squeeze powerpc install, with no tweaks.


-- System Information:
Debian Release: 6.0
  APT prefers testing
  APT policy: (650, 'testing')
Architecture: powerpc (ppc)

Kernel: Linux 2.6.32-5-powerpc
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_GB.UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages openssh-server depends on:
ii  adduser                 3.112+nmu2       add and remove users and groups
ii  debconf [debconf-2.0]   1.5.36           Debian configuration management sy
ii  dpkg                    1.15.8.8         Debian package management system
ii  libc6                   2.11.2-9         Embedded GNU C Library: Shared lib
ii  libcomerr2              1.41.12-2        common error description library
ii  libgssapi-krb5-2        1.8.3+dfsg-4     MIT Kerberos runtime libraries - k
ii  libkrb5-3               1.8.3+dfsg-4     MIT Kerberos runtime libraries
ii  libpam-modules          1.1.1-6.1        Pluggable Authentication Modules f
ii  libpam-runtime          1.1.1-6.1        Runtime support for the PAM librar
ii  libpam0g                1.1.1-6.1        Pluggable Authentication Modules l
ii  libselinux1             2.0.96-1         SELinux runtime shared libraries
ii  libssl0.9.8             0.9.8o-4         SSL shared libraries
ii  libwrap0                7.6.q-19         Wietse Venema's TCP wrappers libra
ii  lsb-base                3.2-23.2squeeze1 Linux Standard Base 3.2 init scrip
ii  openssh-blacklist       0.4.1            list of default blacklisted OpenSS
ii  openssh-client          1:5.5p1-6        secure shell (SSH) client, for sec
ii  procps                  1:3.2.8-9        /proc file system utilities
ii  zlib1g                  1:1.2.3.4.dfsg-3 compression library - runtime

Versions of packages openssh-server recommends:
ii  openssh-blacklist-extra       0.4.1      list of non-default blacklisted Op
ii  xauth                         1:1.0.4-1  X authentication utility

Versions of packages openssh-server suggests:
pn  molly-guard                   <none>     (no description available)
pn  rssh                          <none>     (no description available)
pn  ssh-askpass                   <none>     (no description available)
pn  ufw                           <none>     (no description available)

-- debconf information:
* ssh/use_old_init_script: true
  ssh/vulnerable_host_keys:
  ssh/encrypted_host_key_but_no_keygen:
  ssh/disable_cr_auth: false

# Package generated configuration file
# See the sshd_config(5) manpage for details

# What ports, IPs and protocols we listen for
Port 22
# Use these options to restrict which interfaces/protocols sshd will bind to
#ListenAddress ::
#ListenAddress 0.0.0.0
Protocol 2
# HostKeys for protocol version 2
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_dsa_key
#Privilege Separation is turned on for security
UsePrivilegeSeparation yes

# Lifetime and size of ephemeral version 1 server key
KeyRegenerationInterval 3600
ServerKeyBits 768

# Logging
SyslogFacility AUTH
LogLevel INFO

# Authentication:
LoginGraceTime 120
PermitRootLogin no
StrictModes yes

RSAAuthentication yes
PubkeyAuthentication yes
#AuthorizedKeysFile	%h/.ssh/authorized_keys

# Don't read the user's ~/.rhosts and ~/.shosts files
IgnoreRhosts yes
# For this to work you will also need host keys in /etc/ssh_known_hosts
RhostsRSAAuthentication no
# similar for protocol version 2
HostbasedAuthentication no
# Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication
#IgnoreUserKnownHosts yes

# To enable empty passwords, change to yes (NOT RECOMMENDED)
PermitEmptyPasswords no

# Change to yes to enable challenge-response passwords (beware issues with
# some PAM modules and threads)
ChallengeResponseAuthentication no

# Change to no to disable tunnelled clear text passwords
#PasswordAuthentication yes

# Kerberos options
#KerberosAuthentication no
#KerberosGetAFSToken no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes

# GSSAPI options
#GSSAPIAuthentication no
#GSSAPICleanupCredentials yes

X11Forwarding yes
X11DisplayOffset 10
PrintMotd no
PrintLastLog yes
TCPKeepAlive yes
#UseLogin no

#MaxStartups 10:30:60
#Banner /etc/issue.net

# Allow client to pass locale environment variables
AcceptEnv LANG LC_*

Subsystem sftp /usr/lib/openssh/sftp-server

# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
# be allowed through the ChallengeResponseAuthentication and
# PasswordAuthentication.  Depending on your PAM configuration,
# PAM authentication via ChallengeResponseAuthentication may bypass
# the setting of "PermitRootLogin without-password".
# If you just want the PAM account and session checks to run without
# PAM authentication, then enable this but set PasswordAuthentication
# and ChallengeResponseAuthentication to 'no'.
UsePAM yes

--- End Message ---
--- Begin Message --- 
Dear submitter,

these bug are tagged squeeze without any wheezy/jessie/stretch tag
implying that the bug is not present in more recent Debian releases.

squeeze is no longer supported.

We are sorry that we couldn't deal with your issue in squeeze.

If this bug was incorrectly tagged squeeze, please reopen the bug
and remove the squeeze tag.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

--- End Message ---
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