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1a7dd5893a
Fix #55 See https://github.com/linux-pam/linux-pam/releases/tag/v1.4.0 pam_tally is deprecated and replaced by pam_faillock Co-authored-by: GoldenKiwi <thibault.dewailly@corp.ovh.com>
106 lines
3.5 KiB
Bash
Executable File
106 lines
3.5 KiB
Bash
Executable File
#!/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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# 5.3.2 Ensure lockout for failed password attempts is configured (Scored)
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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=3
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# shellcheck disable=2034
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DESCRIPTION="Set lockout for failed password attemps."
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PACKAGE='libpam-modules-bin'
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PATTERN_AUTH='^auth[[:space:]]*required[[:space:]]*pam_((tally[2]?)|(faillock))\.so'
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PATTERN_ACCOUNT='pam_((tally[2]?)|(faillock))\.so'
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FILE_AUTH='/etc/pam.d/common-auth'
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FILE_ACCOUNT='/etc/pam.d/common-account'
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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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is_pkg_installed "$PACKAGE"
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if [ "$FNRET" != 0 ]; then
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crit "$PACKAGE is not installed!"
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else
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ok "$PACKAGE is installed"
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does_pattern_exist_in_file "$FILE_AUTH" "$PATTERN_AUTH"
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if [ "$FNRET" = 0 ]; then
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ok "$PATTERN_AUTH is present in $FILE_AUTH"
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else
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crit "$PATTERN_AUTH is not present in $FILE_AUTH"
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fi
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does_pattern_exist_in_file "$FILE_ACCOUNT" "$PATTERN_ACCOUNT"
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if [ "$FNRET" = 0 ]; then
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ok "$PATTERN_ACCOUNT is present in $FILE_ACCOUNT"
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else
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crit "$PATTERN_ACCOUNT is not present in $FILE_ACCOUNT"
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fi
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply() {
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is_pkg_installed "$PACKAGE"
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if [ "$FNRET" = 0 ]; then
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ok "$PACKAGE is installed"
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else
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crit "$PACKAGE is absent, installing it"
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apt_install "$PACKAGE"
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fi
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does_pattern_exist_in_file "$FILE_AUTH" "$PATTERN_AUTH"
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if [ "$FNRET" = 0 ]; then
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ok "$PATTERN_AUTH is present in $FILE_AUTH"
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else
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warn "$PATTERN_AUTH is not present in $FILE_AUTH, adding it"
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if [ 10 -ge "$DEB_MAJ_VER" ]; then
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add_line_file_before_pattern "$FILE_AUTH" "auth required pam_tally2.so onerr=fail audit silent deny=5 unlock_time=900" "# pam-auth-update(8) for details."
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else
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add_line_file_before_pattern "$FILE_AUTH" "auth required pam_faillock.so onerr=fail audit silent deny=5 unlock_time=900" "# pam-auth-update(8) for details."
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fi
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fi
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does_pattern_exist_in_file "$FILE_ACCOUNT" "$PATTERN_ACCOUNT"
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if [ "$FNRET" = 0 ]; then
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ok "$PATTERN_ACCOUNT is present in $FILE_ACCOUNT"
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else
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warn "$PATTERN_ACCOUNT is not present in $FILE_ACCOUNT, adding it"
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if [ 10 -ge "$DEB_MAJ_VER" ]; then
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add_line_file_before_pattern "$FILE_ACCOUNT" "account required pam_tally2.so" "# pam-auth-update(8) for details."
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else
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add_line_file_before_pattern "$FILE_ACCOUNT" "account required pam_faillock.so" "# pam-auth-update(8) for details."
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fi
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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 "$CIS_ROOT_DIR" ]; then
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echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
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echo "Cannot source CIS_ROOT_DIR variable, aborting."
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exit 128
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fi
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# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
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if [ -r "$CIS_ROOT_DIR"/lib/main.sh ]; then
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# shellcheck source=../../lib/main.sh
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. "$CIS_ROOT_DIR"/lib/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_ROOT_DIR in /etc/default/cis-hardening"
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exit 128
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fi
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