Files
debian-cis/bin/hardening/pam_faillock_enabled.sh
damien cavagnini 37b4f5982e feat: add debian12 scripts
- sudo_re_authenticate.sh 	-> 5.2.5
- pam_pwhistory_enabled.sh 	-> 5.3.2.4
- pam_faillock_enabled.sh	-> 5.3.2.2
This is an updated version of enable_lockout_failed_password.sh (renamed)

- pam_unix_enabled.sh  		-> 5.3.2.1
- password_failed_lockout.sh 	-> 5.3.3.1.1
- password_unlock_time.sh 	-> 5.3.3.1.2
- password_root_unlock.sh 	-> 5.3.3.1.3
2025-08-12 11:46:14 +02:00

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#!/bin/bash
# run-shellcheck
#
# CIS Debian Hardening
#
#
# Ensure pam_faillock module is enabled (Automated)
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
HARDENING_LEVEL=3
# shellcheck disable=2034
DESCRIPTION="Ensure pam_faillock module is enabled"
PAM_FILES="/etc/pam.d/common-auth /etc/pam.d/common-account"
PAM_PATTERN="^[^#].*pam_faillock.so"
# This function will be called if the script status is on enabled / audit mode
audit() {
PAM_VALID=0
for PAM_FILE in $PAM_FILES; do
if grep "$PAM_PATTERN" "$PAM_FILE" >/dev/null 2>&1; then
info "pam_faillock found in $PAM_FILE"
else
crit "pam_faillock not found in $PAM_FILE"
PAM_VALID=1
fi
done
if [ "$PAM_VALID" -eq 0 ]; then
ok "pam_faillock is enabled"
fi
}
# This function will be called if the script status is on enabled mode
apply() {
if [ "$PAM_VALID" -ne 0 ]; then
# check if already present in an pam-auth-update profile
# if not
# - add in a profile
# then in all cases : pam-auth-update --enable {PROFILE_NAME}
if ! grep "$PAM_PATTERN" /usr/share/pam-configs/*; then
pam_update_profile="faillock faillock_notify"
arr=('Name: Enable pam_faillock to deny access' 'Default: yes' 'Priority: 0' 'Auth-Type: Primary' 'Auth:' ' [default=die] pam_faillock.so authfail')
printf '%s\n' "${arr[@]}" >/usr/share/pam-configs/failock
arr=('Name: Notify of failed login attempts and reset count upon success' 'Default: yes' 'Priority: 1024' 'Auth-Type: Primary' 'Auth:' ' requisite pam_faillock.so preauth' 'Account-Type: Primary' 'Account:' ' required pam_faillock.so')
printf '%s\n' "${arr[@]}" >/usr/share/pam-configs/faillock_notify
else
pam_update_profile="$(grep -l "$PAM_PATTERN" /usr/share/pam-configs/* | paste -s)"
fi
info "Applying 'pam-auth-update' to enable pam_faillock.so"
for profile in $pam_update_profile; do
DEBIAN_FRONTEND='noninteractive' pam-auth-update --force --enable "$profile"
done
fi
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
# shellcheck source=../../debian/default
. /etc/default/cis-hardening
fi
if [ -z "$CIS_LIB_DIR" ]; then
echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
echo "Cannot source CIS_LIB_DIR variable, aborting."
exit 128
fi
# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
if [ -r "${CIS_LIB_DIR}"/main.sh ]; then
# shellcheck source=../../lib/main.sh
. "${CIS_LIB_DIR}"/main.sh
else
echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_LIB_DIR in /etc/default/cis-hardening"
exit 128
fi