mirror of
https://github.com/ovh/debian-cis.git
synced 2024-11-22 21:47:02 +01:00
125 lines
3.5 KiB
Bash
Executable File
125 lines
3.5 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
# run-shellcheck
|
|
#
|
|
# CIS Debian Hardening
|
|
#
|
|
|
|
#
|
|
# 5.1.8 Ensure at/cron is restricted to authorized users (Scored)
|
|
#
|
|
|
|
set -e # One error, it's over
|
|
set -u # One variable unset, it's over
|
|
|
|
# shellcheck disable=2034
|
|
HARDENING_LEVEL=2
|
|
# shellcheck disable=2034
|
|
DESCRIPTION="Restrict at/cron to authorized users."
|
|
|
|
FILES_ABSENT='/etc/cron.deny /etc/at.deny'
|
|
FILES_PRESENT='/etc/cron.allow /etc/at.allow'
|
|
PERMISSIONS='644'
|
|
PERMISSIONSOK='644 640 600 440 400'
|
|
USER='root'
|
|
GROUP='root'
|
|
|
|
# This function will be called if the script status is on enabled / audit mode
|
|
audit() {
|
|
for FILE in $FILES_ABSENT; do
|
|
does_file_exist "$FILE"
|
|
if [ "$FNRET" = 0 ]; then
|
|
crit "$FILE exists"
|
|
else
|
|
ok "$FILE is absent"
|
|
fi
|
|
done
|
|
for FILE in $FILES_PRESENT; do
|
|
does_file_exist "$FILE"
|
|
if [ "$FNRET" != 0 ]; then
|
|
crit "$FILE is absent, should exist"
|
|
else
|
|
has_file_correct_ownership "$FILE" "$USER" "$GROUP"
|
|
if [ "$FNRET" = 0 ]; then
|
|
ok "$FILE has correct ownership"
|
|
else
|
|
crit "$FILE ownership was not set to $USER:$GROUP"
|
|
fi
|
|
has_file_one_of_permissions "$FILE" "$PERMISSIONSOK"
|
|
if [ "$FNRET" = 0 ]; then
|
|
ok "$FILE has correct permissions"
|
|
else
|
|
crit "$FILE permissions were not set to $PERMISSIONS"
|
|
fi
|
|
fi
|
|
done
|
|
}
|
|
|
|
# This function will be called if the script status is on enabled mode
|
|
apply() {
|
|
for FILE in $FILES_ABSENT; do
|
|
does_file_exist "$FILE"
|
|
if [ "$FNRET" = 0 ]; then
|
|
warn "$FILE exists"
|
|
rm "$FILE"
|
|
else
|
|
ok "$FILE is absent"
|
|
fi
|
|
done
|
|
for FILE in $FILES_PRESENT; do
|
|
does_file_exist "$FILE"
|
|
if [ "$FNRET" != 0 ]; then
|
|
warn "$FILE is absent, fixing (touch)"
|
|
touch "$FILE"
|
|
fi
|
|
has_file_correct_ownership "$FILE" "$USER" "$GROUP"
|
|
if [ "$FNRET" = 0 ]; then
|
|
ok "$FILE has correct ownership"
|
|
else
|
|
warn "fixing $FILE ownership to $USER:$GROUP"
|
|
chown "$USER":"$GROUP" "$FILE"
|
|
fi
|
|
has_file_one_of_permissions "$FILE" "$PERMISSIONSOK"
|
|
if [ "$FNRET" = 0 ]; then
|
|
ok "$FILE has correct permissions"
|
|
else
|
|
warn "$FILE permissions were not set to $PERMISSIONS"
|
|
chmod 0"$PERMISSIONS" "$FILE"
|
|
fi
|
|
done
|
|
}
|
|
|
|
# This function will check config parameters required
|
|
check_config() {
|
|
does_user_exist "$USER"
|
|
if [ "$FNRET" != 0 ]; then
|
|
crit "$USER does not exist"
|
|
exit 128
|
|
fi
|
|
does_group_exist "$GROUP"
|
|
if [ "$FNRET" != 0 ]; then
|
|
crit "$GROUP does not exist"
|
|
exit 128
|
|
fi
|
|
}
|
|
|
|
# Source Root Dir Parameter
|
|
if [ -r /etc/default/cis-hardening ]; then
|
|
# shellcheck source=../../debian/default
|
|
. /etc/default/cis-hardening
|
|
fi
|
|
if [ -z "$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 "$CIS_ROOT_DIR"/lib/main.sh ]; then
|
|
# shellcheck source=../../lib/main.sh
|
|
. "$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
|