V8.00.000.2025.06.17

Signed-off-by: Marc S. Weidner <msw@coresecret.dev>

includes/etc/login.defs

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+# SPDX-Version: 3.0
+# SPDX-CreationInfo: 2025-06-17; WEIDNER, Marc S.; <msw@coresecret.dev>
+# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.installer.git
+# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
+# SPDX-FileCopyrightText: 2024-2025; WEIDNER, Marc S.; <msw@coresecret.dev>
+# SPDX-FileType: SOURCE
+# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
+# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
+# SPDX-PackageName: CISS.debian.installer
+# SPDX-Security-Contact: security@coresecret.eu
+
+# /etc/login.defs - Configuration control definitions for the login package.
+#
+# Three items must be defined:  MAIL_DIR, ENV_SUPATH, and ENV_PATH.
+# If unspecified, some arbitrary (and possibly incorrect) value will
+# be assumed.  All other items are optional - if not specified then
+# the described action or option will be inhibited.
+#
+# Comment lines (lines beginning with "#") and blank lines are ignored.
+#
+# Modified for Linux.  --marekm
+
+# REQUIRED for useradd/userdel/usermod
+#   Directory where mailboxes reside, _or_ name of file, relative to the
+#   home directory.  If you _do_ define MAIL_DIR and MAIL_FILE,
+#   MAIL_DIR takes precedence.
+#
+#   Essentially:
+#      - MAIL_DIR defines the location of users mail spool files
+#        (for mbox use) by appending the username to MAIL_DIR as defined
+#        below.
+#      - MAIL_FILE defines the location of the users mail spool files as the
+#        fully-qualified filename obtained by prepending the user home
+#        directory before $MAIL_FILE
+#
+# NOTE: This is no more used for setting up users MAIL environment variable
+#       which is, starting from shadow 4.0.12-1 in Debian, entirely the
+#       job of the pam_mail PAM modules
+#       See default PAM configuration files provided for
+#       login, su, etc.
+#
+# This is a temporary situation: setting these variables will soon
+# move to /etc/default/useradd and the variables will then be
+# no more supported
+MAIL_DIR        /var/mail
+#MAIL_FILE      .mail
+
+#
+# Enable logging and display of /var/log/faillog login failure info.
+# This option conflicts with the pam_tally PAM module.
+#
+FAILLOG_ENAB		yes
+
+#
+# Enable display of unknown usernames when login failures are recorded.
+#
+# WARNING: Unknown usernames may become world readable.
+# See #290803 and #298773 for details about how this could become a security
+# concern
+LOG_UNKFAIL_ENAB	no
+
+#
+# Enable logging of successful logins
+#
+LOG_OK_LOGINS		no
+
+#
+# Enable "syslog" logging of su activity - in addition to sulog file logging.
+# SYSLOG_SG_ENAB does the same for newgrp and sg.
+#
+SYSLOG_SU_ENAB		yes
+SYSLOG_SG_ENAB		yes
+
+#
+# If defined, all su activity is logged to this file.
+#
+#SULOG_FILE	/var/log/sulog
+
+#
+# If defined, file which maps tty line to TERM environment parameter.
+# Each line of the file is in a format something like "vt100  tty01".
+#
+#TTYTYPE_FILE	/etc/ttytype
+
+#
+# If defined, login failures will be logged here in a utmp format
+# last, when invoked as lastb, will read /var/log/btmp, so...
+#
+FTMP_FILE	/var/log/btmp
+
+#
+# If defined, the command name to display when running "su -".  For
+# example, if this is defined as "su" then a "ps" will display the
+# command is "-su".  If not defined, then "ps" would display the
+# name of the shell actually being run, e.g. something like "-sh".
+#
+SU_NAME		su
+
+#
+# If defined, file which inhibits all the usual chatter during the login
+# sequence.  If a full pathname, then hushed mode will be enabled if the
+# user's name or shell are found in the file.  If not a full pathname, then
+# hushed mode will be enabled if the file exists in the user's home directory.
+#
+HUSHLOGIN_FILE	.hushlogin
+#HUSHLOGIN_FILE	/etc/hushlogins
+
+#
+# *REQUIRED*  The default PATH settings, for superuser and normal users.
+#
+# (they are minimal, add the rest in the shell startup files)
+ENV_SUPATH	PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+ENV_PATH	PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
+
+#
+# Terminal permissions
+#
+#	TTYGROUP	Login tty will be assigned this group ownership.
+#	TTYPERM		Login tty will be set to this permission.
+#
+# If you have a "write" program which is "setgid" to a special group
+# which owns the terminals, define TTYGROUP to the group number and
+# TTYPERM to 0620.  Otherwise leave TTYGROUP commented out and assign
+# TTYPERM to either 622 or 600.
+#
+# In Debian /usr/bin/bsd-write or similar programs are setgid tty
+# However, the default and recommended value for TTYPERM is still 0600
+# to not allow anyone to write to anyone else console or terminal
+
+# Users can still allow other people to write them by issuing
+# the "mesg y" command.
+
+TTYGROUP	tty
+TTYPERM		0600
+
+#
+# Login configuration initializations:
+#
+#	ERASECHAR	Terminal ERASE character ('\010' = backspace).
+#	KILLCHAR	Terminal KILL character ('\025' = CTRL/U).
+#	UMASK		Default "umask" value.
+#
+# The ERASECHAR and KILLCHAR are used only on System V machines.
+#
+# UMASK is the default umask value for pam_umask and is used by
+# useradd and newusers to set the mode of the new home directories.
+# 022 is the "historical" value in Debian for UMASK
+# 027, or even 077, could be considered better for privacy
+# There is no One True Answer here : each sysadmin must make up his/her
+# mind.
+#
+# If USERGROUPS_ENAB is set to "yes", that will modify this UMASK default value
+# for private user groups, i. e. the uid is the same as gid, and username is
+# the same as the primary group name: for these, the user permissions will be
+# used as group permissions, e. g. 022 will become 002.
+#
+# Prefix these values with "0" to get octal, "0x" to get hexadecimal.
+#
+ERASECHAR	0177
+KILLCHAR	025
+UMASK		077
+
+# HOME_MODE is used by useradd(8) and newusers(8) to set the mode for new
+# home directories.
+# If HOME_MODE is not set, the value of UMASK is used to create the mode.
+#HOME_MODE	0700
+
+#
+# Password aging controls:
+#
+#	PASS_MAX_DAYS	Maximum number of days a password may be used.
+#	PASS_MIN_DAYS	Minimum number of days allowed between password changes.
+#	PASS_WARN_AGE	Number of days warning given before a password expires.
+#
+PASS_MAX_DAYS	16384
+PASS_MIN_DAYS	1
+PASS_WARN_AGE	128
+
+#
+# Min/max values for automatic uid selection in useradd
+#
+UID_MIN			 1000
+UID_MAX			60000
+# System accounts
+#SYS_UID_MIN		  100
+#SYS_UID_MAX		  999
+# Extra per user uids
+SUB_UID_MIN		   100000
+SUB_UID_MAX		600100000
+SUB_UID_COUNT		    65536
+
+#
+# Min/max values for automatic gid selection in groupadd
+#
+GID_MIN			 1000
+GID_MAX			60000
+# System accounts
+#SYS_GID_MIN		  100
+#SYS_GID_MAX		  999
+# Extra per user group ids
+SUB_GID_MIN		   100000
+SUB_GID_MAX		600100000
+SUB_GID_COUNT		    65536
+
+#
+# Max number of login retries if password is bad. This will most likely be
+# overriden by PAM, since the default pam_unix module has it's own built
+# in of 3 retries. However, this is a safe fallback in case you are using
+# an authentication module that does not enforce PAM_MAXTRIES.
+#
+LOGIN_RETRIES		5
+
+#
+# Max time in seconds for login
+#
+LOGIN_TIMEOUT		180
+
+#
+# Which fields may be changed by regular users using chfn - use
+# any combination of letters "frwh" (full name, room number, work
+# phone, home phone).  If not defined, no changes are allowed.
+# For backward compatibility, "yes" = "rwh" and "no" = "frwh".
+#
+CHFN_RESTRICT		rwh
+
+#
+# Should login be allowed if we can't cd to the home directory?
+# Default is no.
+#
+DEFAULT_HOME	yes
+
+#
+# If defined, this command is run when removing a user.
+# It should remove any at/cron/print jobs etc. owned by
+# the user to be removed (passed as the first argument).
+#
+#USERDEL_CMD	/usr/sbin/userdel_local
+
+#
+# If set to yes, userdel will remove the user's group if it contains no
+# more members, and useradd will create by default a group with the name
+# of the user.
+#
+# Other former uses of this variable such as setting the umask when
+# user==primary group are not used in PAM environments, such as Debian
+#
+USERGROUPS_ENAB yes
+
+#
+# Instead of the real user shell, the program specified by this parameter
+# will be launched, although its visible name (argv[0]) will be the shell's.
+# The program may do whatever it wants (logging, additional authentification,
+# banner, ...) before running the actual shell.
+#
+# FAKE_SHELL /bin/fakeshell
+
+#
+# If defined, either full pathname of a file containing device names or
+# a ":" delimited list of device names.  Root logins will be allowed only
+# upon these devices.
+#
+# This variable is used by login and su.
+#
+#CONSOLE	/etc/consoles
+#CONSOLE	console:tty01:tty02:tty03:tty04
+
+#
+# List of groups to add to the user's supplementary group set
+# when logging in on the console (as determined by the CONSOLE
+# setting).  Default is none.
+#
+# Use with caution - it is possible for users to gain permanent
+# access to these groups, even when not logged in on the console.
+# How to do it is left as an exercise for the reader...
+#
+# This variable is used by login and su.
+#
+#CONSOLE_GROUPS		floppy:audio:cdrom
+
+#
+# If set to "yes", new passwords will be encrypted using the MD5-based
+# algorithm compatible with the one used by recent releases of FreeBSD.
+# It supports passwords of unlimited length and longer salt strings.
+# Set to "no" if you need to copy encrypted passwords to other systems
+# which don't understand the new algorithm.  Default is "no".
+#
+# This variable is deprecated. You should use ENCRYPT_METHOD.
+#
+#MD5_CRYPT_ENAB	no
+
+#
+# If set to MD5, MD5-based algorithm will be used for encrypting password
+# If set to SHA256, SHA256-based algorithm will be used for encrypting password
+# If set to SHA512, SHA512-based algorithm will be used for encrypting password
+# If set to BCRYPT, BCRYPT-based algorithm will be used for encrypting password
+# If set to YESCRYPT, YESCRYPT-based algorithm will be used for encrypting password
+# If set to DES, DES-based algorithm will be used for encrypting password (default)
+# MD5 and DES should not be used for new hashes, see crypt(5) for recommendations.
+# Overrides the MD5_CRYPT_ENAB option
+#
+# Note: It is recommended to use a value consistent with
+# the PAM modules configuration.
+#
+ENCRYPT_METHOD YESCRYPT
+
+#
+# Only works if ENCRYPT_METHOD is set to SHA256 or SHA512.
+#
+# Define the number of SHA rounds.
+# With a lot of rounds, it is more difficult to brute-force the password.
+# However, more CPU resources will be needed to authenticate users if
+# this value is increased.
+#
+# If not specified, the libc will choose the default number of rounds (5000),
+# which is orders of magnitude too low for modern hardware.
+# The values must be within the 1000-999999999 range.
+# If only one of the MIN or MAX values is set, then this value will be used.
+# If MIN > MAX, the highest value will be used.
+#
+SHA_CRYPT_MIN_ROUNDS 8388608
+SHA_CRYPT_MAX_ROUNDS 8388608
+
+#
+# Only works if ENCRYPT_METHOD is set to YESCRYPT.
+#
+# Define the YESCRYPT cost factor.
+# With a higher cost factor, it is more difficult to brute-force the password.
+# However, more CPU time and more memory will be needed to authenticate users
+# if this value is increased.
+#
+# If not specified, a cost factor of 5 will be used.
+# The value must be within the 1-11 range.
+#
+YESCRYPT_COST_FACTOR 8
+
+#
+# The pwck(8) utility emits a warning for any system account with a home
+# directory that does not exist.  Some system accounts intentionally do
+# not have a home directory.  Such accounts may have this string as
+# their home directory in /etc/passwd to avoid a spurious warning.
+#
+NONEXISTENT	/nonexistent
+
+#
+# Allow newuidmap and newgidmap when running under an alternative
+# primary group.
+#
+#GRANT_AUX_GROUP_SUBIDS yes
+
+#
+# Prevents an empty password field to be interpreted as "no authentication
+# required".
+# Set to "yes" to prevent for all accounts
+# Set to "superuser" to prevent for UID 0 / root (default)
+# Set to "no" to not prevent for any account (dangerous, historical default)
+PREVENT_NO_AUTH superuser
+
+#
+# Select the HMAC cryptography algorithm.
+# Used in pam_timestamp module to calculate the keyed-hash message
+# authentication code.
+#
+# Note: It is recommended to check hmac(3) to see the possible algorithms
+# that are available in your system.
+#
+#HMAC_CRYPTO_ALGO SHA512
+
+################# OBSOLETED BY PAM ##############
+#						                                    #
+# These options are now handled by PAM. Please	#
+# edit the appropriate file in /etc/pam.d/ to	  #
+# enable the equivelants of them.               #
+#                                               #
+#################################################
+
+#MOTD_FILE
+#DIALUPS_CHECK_ENAB
+#LASTLOG_ENAB
+#MAIL_CHECK_ENAB
+#OBSCURE_CHECKS_ENAB
+#PORTTIME_CHECKS_ENAB
+#SU_WHEEL_ONLY
+#CRACKLIB_DICTPATH
+#PASS_CHANGE_TRIES
+#PASS_ALWAYS_WARN
+#ENVIRON_FILE
+#NOLOGINS_FILE
+#ISSUE_FILE
+#PASS_MIN_LEN
+#PASS_MAX_LEN
+#ULIMIT
+#ENV_HZ
+#CHFN_AUTH
+#CHSH_AUTH
+#FAIL_DELAY
+
+################# OBSOLETED #######################
+#						                                      #
+# These options are no more handled by shadow.    #
+#                                                 #
+# Shadow utilities will display a warning if they #
+# still appear.                                   #
+#                                                 #
+###################################################
+
+# CLOSE_SESSIONS
+# LOGIN_STRING
+# NO_PASSWORD_CONSOLE
+# QMAIL_DIR
+
+# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=conf

includes/etc/machine-id

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+b08dfa6083e7567a1921a715000001fb

includes/etc/motd

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+
+      (c) Marc S. Weidner, 2018 - 2025
+      (p) Centurion Press, 2018 - 2025
+          Centurion Intelligence Consulting Agency (tm)
+          https://coresecret.eu/
+          Please consider making a donation:
+          https://coresecret.eu/spenden/

includes/etc/security/pwquality.cnf

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+# SPDX-Version: 3.0
+# SPDX-CreationInfo: 2025-06-17; WEIDNER, Marc S.; <msw@coresecret.dev>
+# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.installer.git
+# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
+# SPDX-FileCopyrightText: 2024-2025; WEIDNER, Marc S.; <msw@coresecret.dev>
+# SPDX-FileType: SOURCE
+# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
+# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
+# SPDX-PackageName: CISS.debian.installer
+# SPDX-Security-Contact: security@coresecret.eu
+
+### Current recommendations for '/etc/security/pwquality.conf' based on common best practices, including NIST SP 800-63B,
+### https://pages.nist.gov/800-63-3/sp800-63b.html and weighing usability against security.
+
+### Configuration for systemwide password quality limits
+### Defaults:
+
+### Number of characters in the new password that must not be present in the old password.
+difok = 4
+
+### Length over complexity: Studies show that longer passphrases are significantly more resistant to brute-force and dictionary
+### attacks. NIST recommends at least eight characters but advises longer passphrases (e.g., 12-64) for increased security.
+### Twenty characters strike a good balance between security and user convenience. Minimum acceptable size for the new password
+### (plus one if credits are not disabled, which is the default). Cannot be set to a lower value than 6.
+minlen = 42
+
+### dcredit = 0, ucredit = 0, lcredit = 0, ocredit = 0, minclass = 0
+### NIST SP 800-63B advises against rigid complexity rules (numbers, symbols, uppercase) because they can lead users to adopt
+### predictable patterns (e.g., "Pa$$word!"). Length and dictionary checks are more effective.
+
+  ### The maximum credit for having digits in the new password. If less than 0 it is the minimum number of digits in the new
+  ### password.
+  dcredit = 0
+
+  ### The maximum credit for having uppercase characters in the new password. If less than 0, it is the minimum number of
+  ### uppercase characters in the new password.
+  ucredit = 0
+
+  ### The maximum credit for having lowercase characters in the new password. If less than 0, it is the minimum number of
+  ### lowercase characters in the new password.
+  lcredit = 0
+
+  ### The maximum credit for having other characters in the new password. If less than 0, it is the minimum number of other
+  ### characters in the new password.
+  ocredit = 0
+
+  ### The minimum number of required classes of characters for the new password (digits, uppercase, lowercase, others).
+  minclass = 0
+
+### The maximum number of allowed consecutive same characters in the new password. The check is disabled if the value is 0.
+maxrepeat = 4
+
+### The maximum number of allowed consecutive characters of the same class in the new password. The check is disabled if the
+### value is 0.
+maxclassrepeat = 0
+
+### Whether to check for the words from the passwd entry GECOS string of the user. The check is enabled if the value is not 0.
+### gecoscheck = 0
+
+### Whether to check for the words from the cracklib dictionary. The check is enabled if the value is not 0.
+dictcheck = 1
+
+### Whether to check if it contains the username in some form. The check is enabled if the value is not 0.
+usercheck = 1
+
+### Length of substrings from the username to check for in the password. The check is enabled if the value is greater than 0,
+### and the usercheck is enabled.
+usersubstr = 3
+
+### Whether the check is enforced by the PAM module and possibly other applications. The new password is rejected if it fails
+### the check, and the value is not 0.
+enforcing = 1
+
+### Path to the cracklib dictionaries. The default is to use the cracklib default.
+dictpath =
+
+### Prompt user at most N times before returning with error. The default is 1.
+retry = 3
+
+#### Enforces pwquality checks on the root user password. Enabled if the option is present.
+enforce_for_root
+
+### Skip testing the password quality for users that are not present in the '/etc/passwd' file. Enabled if the option is present.
+local_users_only
+
+# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh