197 lines
6.5 KiB
Bash
Executable File
197 lines
6.5 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
#
|
|
# harbian-audit for Debian GNU/Linux 7/8/9/10/11/12 or CentOS 8 Hardening
|
|
#
|
|
|
|
#
|
|
# 9.2.12 Set Lockout for Failed Password Attempts (Scored)
|
|
# Replaced pam_tally2 with pam_faillock in debian 11
|
|
# for login and ssh service
|
|
#
|
|
|
|
set -e # One error, it's over
|
|
set -u # One variable unset, it's over
|
|
|
|
HARDENING_LEVEL=3
|
|
|
|
PACKAGE='libpam-modules-bin'
|
|
AUTHFILE='/etc/pam.d/common-auth'
|
|
ADDPATTERNLINE='# pam-auth-update(8) for details.'
|
|
UNLOCKOPTION='unlock_time'
|
|
UNLOCK_VAL=900
|
|
|
|
# This function will be called if the script status is on enabled / audit mode
|
|
audit_before11 () {
|
|
is_pkg_installed $PACKAGE
|
|
if [ $FNRET != 0 ]; then
|
|
crit "$PACKAGE is not installed!"
|
|
FNRET=11
|
|
else
|
|
ok "$PACKAGE is installed"
|
|
does_pattern_exist_in_file $AUTHFILE $AUTHPATTERN
|
|
if [ $FNRET = 0 ]; then
|
|
ok "$AUTHPATTERN is present in $AUTHFILE."
|
|
check_param_pair_by_pam $AUTHFILE $PAMLIBNAME $UNLOCKOPTION ge $UNLOCK_VAL
|
|
if [ $FNRET = 0 ]; then
|
|
ok "$UNLOCKOPTION set condition is greater-than-or-equal-to $UNLOCK_VAL"
|
|
else
|
|
crit "$UNLOCKOPTION set condition is not $UNLOCK_VAL"
|
|
fi
|
|
else
|
|
crit "$AUTHPATTERN is not present in $AUTHFILE"
|
|
FNRET=2
|
|
fi
|
|
fi
|
|
}
|
|
|
|
audit_debian11 () {
|
|
is_pkg_installed $PACKAGE
|
|
if [ $FNRET != 0 ]; then
|
|
crit "$PACKAGE is not installed!"
|
|
FNRET=11
|
|
else
|
|
ok "$PACKAGE is installed"
|
|
does_pattern_exist_in_file $AUTHFILE $AUTHPATTERN
|
|
if [ $FNRET = 0 ]; then
|
|
ok "$AUTHPATTERN is present in $AUTHFILE."
|
|
check_param_pair_by_value $SECCONFFILE $UNLOCKOPTION le $UNLOCK_VAL
|
|
if [ $FNRET = 0 ]; then
|
|
ok "Option $UNLOCKOPTION set condition is less than or equal to $UNLOCK_VAL in $SECCONFFILE"
|
|
elif [ $FNRET = 1 ]; then
|
|
crit "Option $UNLOCKOPTION set condition is greater than $UNLOCK_VAL in $SECCONFFILE"
|
|
elif [ $FNRET = 2 ]; then
|
|
crit "Option $UNLOCKOPTION is not conf in $SECCONFFILE"
|
|
elif [ $FNRET = 3 ]; then
|
|
crit "Config file $SECCONFFILE is not exist!"
|
|
fi
|
|
else
|
|
crit "$AUTHPATTERN is not present in $AUTHFILE"
|
|
FNRET=12
|
|
fi
|
|
fi
|
|
}
|
|
|
|
audit () {
|
|
if [ $ISDEBIAN11 = 1 ]; then
|
|
audit_debian11
|
|
else
|
|
audit_before11
|
|
fi
|
|
}
|
|
|
|
apply_before11 () {
|
|
if [ $FNRET = 0 ]; then
|
|
ok "$UNLOCKOPTION set condition is greater-than-or-equal-to $UNLOCK_VAL"
|
|
elif [ $FNRET = 1 ]; then
|
|
warn "Apply:$PACKAGE is absent, installing it"
|
|
install_package $PACKAGE
|
|
elif [ $FNRET = 2 ]; then
|
|
warn "Apply:$AUTHPATTERN is not present in $AUTHFILE"
|
|
if [ $OS_RELEASE -eq 2 ]; then
|
|
add_line_file_after_pattern_lastline "$AUTHFILE" "$AUTHRULE" "$ADDPATTERNLINE"
|
|
else
|
|
add_line_file_after_pattern "$AUTHFILE" "$AUTHRULE" "$ADDPATTERNLINE"
|
|
fi
|
|
elif [ $FNRET = 3 ]; then
|
|
crit "$AUTHFILE is not exist, please check"
|
|
elif [ $FNRET = 4 ]; then
|
|
warn "Apply:$UNLOCKOPTION is not conf"
|
|
add_option_to_auth_check $AUTHFILE $PAMLIBNAME "$UNLOCKOPTION=$UNLOCK_VAL"
|
|
elif [ $FNRET = 5 ]; then
|
|
warn "Apply:$UNLOCKOPTION set is not match legally, reset it to $UNLOCK_VAL"
|
|
reset_option_to_auth_check $AUTHFILE $PAMLIBNAME "$UNLOCKOPTION" "$UNLOCK_VAL"
|
|
fi
|
|
}
|
|
|
|
# Input:
|
|
# Param1: return-value of call check_param_pair_by_value
|
|
# Function: Perform corresponding repair actions based on the return value of the error.
|
|
apply_secconffile() {
|
|
FNRET=$1
|
|
if [ $FNRET = 0 ]; then
|
|
ok "Option $UNLOCKOPTION set condition is less than or equal to $UNLOCK_VAL in $SECCONFFILE"
|
|
elif [ $FNRET = 1 ]; then
|
|
warn "Reset option $UNLOCKOPTION to $UNLOCK_VAL in $SECCONFFILE"
|
|
replace_in_file $SECCONFFILE "^$UNLOCKOPTION.*" "$UNLOCKOPTION = $UNLOCK_VAL"
|
|
elif [ $FNRET = 2 ]; then
|
|
warn "$UNLOCKOPTION is not conf, add to $SECCONFFILE"
|
|
add_end_of_file $SECCONFFILE "$UNLOCKOPTION = $UNLOCK_VAL"
|
|
elif [ $FNRET = 3 ]; then
|
|
warn "Config file $SECCONFFILE is not exist! Please check it by youself"
|
|
else
|
|
warn "This param $FNRET was not defined!!!"
|
|
fi
|
|
}
|
|
|
|
apply_debian11 () {
|
|
if [ $FNRET = 0 ]; then
|
|
ok "$UNLOCKOPTION set condition is less than or equal to $UNLOCK_VAL in $SECCONFFILE"
|
|
elif [ $FNRET = 11 ]; then
|
|
warn "Apply:$PACKAGE is absent, installing it"
|
|
install_package $PACKAGE
|
|
does_pattern_exist_in_file $AUTHFILE $AUTHPATTERN
|
|
if [ $FNRET != 0 ]; then
|
|
add_line_file_after_pattern "$AUTHFILE" "$AUTHRULE" "$ADDPATTERNLINE"
|
|
check_param_pair_by_value $SECCONFFILE $UNLOCKOPTION le $UNLOCK_VAL
|
|
apply_secconffile $FNRET
|
|
fi
|
|
elif [ $FNRET = 12 ]; then
|
|
add_line_file_after_pattern "$AUTHFILE" "$AUTHRULE" "$ADDPATTERNLINE"
|
|
check_param_pair_by_value $SECCONFFILE $UNLOCKOPTION le $UNLOCK_VAL
|
|
apply_secconffile $FNRET
|
|
else
|
|
apply_secconffile $FNRET
|
|
fi
|
|
}
|
|
|
|
# This function will be called if the script status is on enabled mode
|
|
apply () {
|
|
if [ $ISDEBIAN11 = 1 ]; then
|
|
apply_debian11
|
|
else
|
|
apply_before11
|
|
fi
|
|
}
|
|
|
|
# This function will check config parameters required
|
|
check_config() {
|
|
if [ $OS_RELEASE -eq 2 ]; then
|
|
PACKAGE='pam'
|
|
PAMLIBNAME='pam_faillock.so'
|
|
AUTHPATTERN='^auth[[:space:]]*required[[:space:]]*pam_faillock.so'
|
|
AUTHFILE='/etc/pam.d/password-auth'
|
|
AUTHRULE='auth required pam_faillock.so deny=3 even_deny_root unlock_time=900'
|
|
ADDPATTERNLINE='auth[[:space:]]*required'
|
|
elif [ $OS_RELEASE -eq 1 ]; then
|
|
ISDEBIAN11=0
|
|
PAMLIBNAME='pam_tally2.so'
|
|
AUTHPATTERN='^auth[[:space:]]*required[[:space:]]*pam_tally2.so'
|
|
AUTHRULE='auth required pam_tally2.so deny=3 even_deny_root unlock_time=900'
|
|
# ubuntu/debian11/debian12
|
|
elif [ $OS_RELEASE -eq 3 -o $OS_RELEASE -eq 11 -o $OS_RELEASE -eq 12 ]; then
|
|
ISDEBIAN11=1
|
|
SECCONFFILE='/etc/security/faillock.conf'
|
|
AUTHPATTERN='^auth[[:space:]]*required[[:space:]]*pam_faillock.so'
|
|
AUTHRULE='auth required pam_faillock.so'
|
|
fi
|
|
}
|
|
|
|
# Source Root Dir Parameter
|
|
if [ -r /etc/default/cis-hardening ]; then
|
|
. /etc/default/cis-hardening
|
|
fi
|
|
if [ -z "$CIS_ROOT_DIR" ]; then
|
|
echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
|
|
echo "Cannot source CIS_ROOT_DIR variable, aborting."
|
|
exit 128
|
|
fi
|
|
|
|
# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
|
|
if [ -r $CIS_ROOT_DIR/lib/main.sh ]; then
|
|
. $CIS_ROOT_DIR/lib/main.sh
|
|
else
|
|
echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_ROOT_DIR in /etc/default/cis-hardening"
|
|
exit 128
|
|
fi
|