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damien cavagninidamcav35
damien cavagnini
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damcav35
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feat: add debian12 scripts
- password_number_changed_chars.sh -> 5.3.3.2.1 - password_dictcheck_enabled.sh -> 5.3.3.2.6 - password_quality_enforced.sh -> 5.3.3.2.7 - password_quality_enforced_for_root.sh -> 5.3.3.2.8 - root_umask.sh -> 5.4.2.6 - nologin_abent_from_etc_shells.sh -> 5.4.3.1
1 parent da3c034 commit 1c3e6fa

12 files changed

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lines changed

‎bin/hardening/nologin_abent_from_etc_shells.sh‎

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#!/bin/bash
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# run-shellcheck
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#
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# CIS Debian Hardening
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#
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#
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# Ensure nologin is not listed in /etc/shells (Automated)
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#
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set -e # One error, it's over
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set -u # One variable unset, it's over
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# shellcheck disable=2034
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HARDENING_LEVEL=2
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# shellcheck disable=2034
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DESCRIPTION="Ensure nologin is not listed in /etc/shells (Automated)"
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FILE='/etc/shells'
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# By putting nologin in /etc/shells, any user that has nologin as its shell is considered a full, unrestricted user.
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# This is not the expected behavior for nologin.
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# This function will be called if the script status is on enabled / audit mode
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audit() {
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ETC_SHELLS_VALID=0
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does_file_exist "$FILE"
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if [ "$FNRET" -eq 0 ]; then
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if $SUDO_CMD grep "nologin" "$FILE" >/dev/null 2>&1; then
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crit "'nologin' is present in $FILE"
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ETC_SHELLS_VALID=1
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fi
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fi
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if [ "$ETC_SHELLS_VALID" -eq 0 ]; then
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ok "'nologin' is not in $FILE"
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply() {
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if [ "$ETC_SHELLS_VALID" -ne 0 ]; then
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info "Removing 'nologin' from $FILE"
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sed -i '/nologin/d' "$FILE"
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fi
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}
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# This function will check config parameters required
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check_config() {
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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# shellcheck source=../../debian/default
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. /etc/default/cis-hardening
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fi
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if [ -z "$CIS_LIB_DIR" ]; then
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echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
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echo "Cannot source CIS_LIB_DIR variable, aborting."
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exit 128
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fi
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# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
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if [ -r "${CIS_LIB_DIR}"/main.sh ]; then
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# shellcheck source=../../lib/main.sh
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. "${CIS_LIB_DIR}"/main.sh
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else
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echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_LIB_DIR in /etc/default/cis-hardening"
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exit 128
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fi

‎bin/hardening/password_dictcheck_enabled.sh‎

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#!/bin/bash
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# run-shellcheck
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#
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# CIS Debian Hardening
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#
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#
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# Ensure password dictionary check is enabled (Automated)
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#
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set -e # One error, it's over
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set -u # One variable unset, it's over
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# shellcheck disable=2034
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HARDENING_LEVEL=2
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# shellcheck disable=2034
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DESCRIPTION="Ensure password dictionary check is enabled"
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# 'dictcheck=0' will disable the dictionnary check
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EXPECTED_VALUE=1
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# This function will be called if the script status is on enabled / audit mode
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audit() {
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QUALITY_VALID=1
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DICTCHECK_IN_PAM=1
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# order of override from strongest to latest:
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# - /etc/pam.d/*
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# - /etc/security/pwquality.conf
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# - /etc/security/pwquality.conf.d/*.conf
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# "It is recommended that settings be configured in a .conf file in the /etc/security/pwquality.conf.d/ directory for clarity, convenience, and durability."
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local dictcheck_value=""
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DICTCHECK_FILE="/etc/security/pwquality.conf"
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if [ -d /etc/security/pwquality.conf.d ]; then
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if grep -E "^[[:space:]]?dictcheck" /etc/security/pwquality.conf.d/*.conf >/dev/null 2>&1; then
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# if set in many places, the latest one is the one used
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DICTCHECK_FILE=$(grep -lE "^[[:space:]]?dictcheck" | sort -n | tail -n 1)
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fi
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fi
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# maybe absent from /etc/security/pwquality.conf
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if grep -E "^[[:space:]]?dictcheck" "$DICTCHECK_FILE" >/dev/null 2>&1; then
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dictcheck_value=$(grep -E "^[[:space:]]?dictcheck" "$DICTCHECK_FILE" | awk -F '=' '{print $2}' | sed 's/\ *//g')
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info "current 'pwquality dictcheck' value = $dictcheck_value"
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if [ "$dictcheck_value" -eq "$EXPECTED_VALUE" ]; then
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QUALITY_VALID=0
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fi
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fi
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for file in /usr/share/pam-configs/*; do
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if grep -Pl -- '\bpam_pwquality\.so\h+([^#\n\r]+\h+)?dictcheck\b' "$file" >/dev/null 2>&1; then
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DICTCHECK_IN_PAM=0
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break
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fi
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done
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if [ "$QUALITY_VALID" -eq 0 ]; then
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ok "pwquality 'dictcheck' value is correctly configured"
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else
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crit "pwquality 'dictcheck' value is not correctly configured"
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fi
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if [ "$DICTCHECK_IN_PAM" -eq 0 ]; then
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crit "pwquality 'dictcheck' is overriden in pam configuration"
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply() {
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if [ "$QUALITY_VALID" -ne 0 ]; then
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sed -E -i '/^[[:space:]]?dictcheck/d' "$DICTCHECK_FILE"
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echo "dictcheck=$EXPECTED_VALUE" >>"$DICTCHECK_FILE"
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fi
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if [ "$DICTCHECK_IN_PAM" -eq 0 ]; then
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for file in /usr/share/pam-configs/*; do
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if grep -Pl -- '\bpam_pwquality\.so\h+([^#\n\r]+\h+)?dictcheck\b' "$file" >/dev/null 2>&1; then
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sed -E -i 's/dictcheck[[:space:]]?=[[:space:]]?[0-9]+//g' "$file"
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fi
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done
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fi
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}
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# This function will check config parameters required
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check_config() {
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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# shellcheck source=../../debian/default
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. /etc/default/cis-hardening
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fi
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if [ -z "$CIS_LIB_DIR" ]; then
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echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
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echo "Cannot source CIS_LIB_DIR variable, aborting."
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exit 128
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fi
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# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
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if [ -r "${CIS_LIB_DIR}"/main.sh ]; then
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# shellcheck source=../../lib/main.sh
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. "${CIS_LIB_DIR}"/main.sh
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else
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echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_LIB_DIR in /etc/default/cis-hardening"
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exit 128
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fi

‎bin/hardening/password_number_changed_chars.sh‎

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#!/bin/bash
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# run-shellcheck
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#
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# CIS Debian Hardening
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#
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#
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# Ensure password number of changed characters is configured (Automated)
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#
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set -e # One error, it's over
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set -u # One variable unset, it's over
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# shellcheck disable=2034
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HARDENING_LEVEL=2
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# shellcheck disable=2034
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DESCRIPTION="Ensure password number of changed characters is configured"
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OPTIONS=''
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# This function will be called if the script status is on enabled / audit mode
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audit() {
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QUALITY_VALID=1
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DIFOK_IN_PAM=1
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# order of override from strongest to latest:
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# - /etc/pam.d/*
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# - /etc/security/pwquality.conf
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# - /etc/security/pwquality.conf.d/*.conf
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# "It is recommended that settings be configured in a .conf file in the /etc/security/pwquality.conf.d/ directory for clarity, convenience, and durability."
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expected_value=$(awk -F '=' '{print $2}' <<<"$OPTIONS")
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local difok_value=""
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DIFOK_FILE="/etc/security/pwquality.conf"
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if [ -d /etc/security/pwquality.conf.d ]; then
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if grep -E "^[[:space:]]?difok" /etc/security/pwquality.conf.d/*.conf >/dev/null 2>&1; then
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# if set in many places, the latest one is the one used
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DIFOK_FILE=$(grep -lE "^[[:space:]]?difok" | sort -n | tail -n 1)
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fi
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fi
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# maybe absent from /etc/security/pwquality.conf
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if grep -E "^[[:space:]]?difok" "$DIFOK_FILE" >/dev/null 2>&1; then
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difok_value=$(grep -E "^[[:space:]]?difok" "$DIFOK_FILE" | awk -F '=' '{print $2}' | sed 's/\ *//g')
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info "current 'pwquality difok' value = $difok_value"
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if [ "$difok_value" -eq "$expected_value" ]; then
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QUALITY_VALID=0
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fi
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fi
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for file in /usr/share/pam-configs/*; do
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if grep -Pl -- '\bpam_pwquality\.so\h+([^#\n\r]+\h+)?difok\b' "$file" >/dev/null 2>&1; then
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DIFOK_IN_PAM=0
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break
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fi
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done
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if [ "$QUALITY_VALID" -eq 0 ]; then
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ok "pwquality 'difok' value is correctly configured"
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else
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crit "pwquality 'difok' value is not correctly configured"
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fi
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if [ "$DIFOK_IN_PAM" -eq 0 ]; then
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crit "pwquality 'difok' is overriden in pam configuration"
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply() {
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if [ "$QUALITY_VALID" -ne 0 ]; then
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sed -E -i '/^[[:space:]]?difok/d' "$DIFOK_FILE"
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echo "$OPTIONS" >>"$DIFOK_FILE"
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fi
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if [ "$DIFOK_IN_PAM" -eq 0 ]; then
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for file in /usr/share/pam-configs/*; do
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if grep -Pl -- '\bpam_pwquality\.so\h+([^#\n\r]+\h+)?difok\b' "$file" >/dev/null 2>&1; then
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sed -E -i 's/difok[[:space:]]?=[[:space:]]?[0-9]+//g' "$file"
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fi
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done
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fi
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}
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# This function will create the config file for this check with default values
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create_config() {
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cat <<EOF
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status=audit
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# Put your custom configuration here
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OPTIONS="difok=2"
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EOF
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}
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# This function will check config parameters required
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check_config() {
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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# shellcheck source=../../debian/default
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. /etc/default/cis-hardening
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fi
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if [ -z "$CIS_LIB_DIR" ]; then
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echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
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echo "Cannot source CIS_LIB_DIR variable, aborting."
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exit 128
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fi
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# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
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if [ -r "${CIS_LIB_DIR}"/main.sh ]; then
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# shellcheck source=../../lib/main.sh
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. "${CIS_LIB_DIR}"/main.sh
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else
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echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_LIB_DIR in /etc/default/cis-hardening"
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exit 128
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fi

‎bin/hardening/password_quality_enforced.sh‎

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#!/bin/bash
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# run-shellcheck
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#
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# CIS Debian Hardening
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#
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#
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# Ensure password quality checking is enforced (Automated)
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#
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set -e # One error, it's over
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set -u # One variable unset, it's over
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# shellcheck disable=2034
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HARDENING_LEVEL=2
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# shellcheck disable=2034
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DESCRIPTION="Ensure password quality checking is enforced"
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# This function will be called if the script status is on enabled / audit mode
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audit() {
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QUALITY_VALID=0
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DISABLED_IN_PAM=1
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for file in /etc/security/pwquality.conf /etc/security/pwquality.conf.d/*.conf; do
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if grep -Psi -- '^\h*enforcing\h*=\h*0\b' "$file" >/dev/null 2>&1; then
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QUALITY_VALID=1
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break
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fi
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done
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if grep -PHsi -- '^\h*password\h+[^#\n\r]+\h+pam_pwquality\.so\h+([^#\n\r]+\h+)?enforcing=0\b' /etc/pam.d/common-password >/dev/null; then
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DISABLED_IN_PAM=0
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QUALITY_VALID=1
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fi
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if [ "$QUALITY_VALID" -eq 0 ]; then
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ok "password quality is enforced"
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else
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crit "password quality is not enforced"
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply() {
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if [ "$QUALITY_VALID" -ne 0 ]; then
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for file in /usr/share/pam-configs/* /etc/security/pwquality.conf; do
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if grep -Psi -- '^\h*enforcing\h*=\h*0\b' "$file" >/dev/null 2>&1; then
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info "Commenting 'enforcing=0' in $file"
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sed -ri 's/^\s*enforcing\s*=\s*0/# &/' "$file"
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fi
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done
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fi
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if [ "$DISABLED_IN_PAM" -ne 1 ]; then
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info "Removing 'enforcing=0' in /etc/pam.d/common-password"
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sed -E -i 's/enforcing[[:space:]]?=[[:space:]]?0//g' /etc/pam.d/common-password
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fi
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}
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# This function will check config parameters required
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check_config() {
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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# shellcheck source=../../debian/default
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. /etc/default/cis-hardening
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fi
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if [ -z "$CIS_LIB_DIR" ]; then
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echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
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echo "Cannot source CIS_LIB_DIR variable, aborting."
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exit 128
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fi
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# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
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if [ -r "${CIS_LIB_DIR}"/main.sh ]; then
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# shellcheck source=../../lib/main.sh
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. "${CIS_LIB_DIR}"/main.sh
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else
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echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_LIB_DIR in /etc/default/cis-hardening"
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exit 128
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fi

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