mirror of
https://github.com/ovh/debian-cis.git
synced 2025-07-16 05:42:17 +02:00
aebb65889e
And use it as default version. To this end, the scripts in bin/hardening have been made generic by removing the associated recommendation number. Only impact is if you are used to execute scripts directly from bin/hardening. In this case, please use the "bin/hardening.sh" wrapper as intended. I had to rename 2.3.1_disable_nis.sh to uninstall_nis.sh, as it was conflicting with 2.3.1_disable_nis.sh Also, there was a doublon between 1.1.1.8_disable_cramfs.sh and 99.1.1.1_disable_cramfs.sh ; the former was kept
91 lines
2.6 KiB
Bash
Executable File
91 lines
2.6 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
# run-shellcheck
|
|
#
|
|
# CIS Debian Hardening
|
|
#
|
|
|
|
#
|
|
# 6.2.6 Ensure root is the only UID 0 account (Scored)
|
|
#
|
|
|
|
set -e # One error, it's over
|
|
set -u # One variable unset, it's over
|
|
|
|
# shellcheck disable=2034
|
|
# shellcheck disable=2034
|
|
HARDENING_LEVEL=2
|
|
# shellcheck disable=2034
|
|
# shellcheck disable=2034
|
|
DESCRIPTION="Verify root is the only UID 0 account."
|
|
EXCEPTIONS=""
|
|
|
|
FILE='/etc/passwd'
|
|
RESULT=''
|
|
|
|
# This function will be called if the script status is on enabled / audit mode
|
|
audit() {
|
|
info "Checking if accounts have uid 0"
|
|
RESULT=$(awk -F: '($3 == 0 && $1!="root" ) { print $1 }' "$FILE")
|
|
FOUND_EXCEPTIONS=""
|
|
for ACCOUNT in $RESULT; do
|
|
debug "Account : $ACCOUNT"
|
|
debug "Exceptions : $EXCEPTIONS"
|
|
debug "echo \"$EXCEPTIONS\" | grep -qw $ACCOUNT"
|
|
if echo "$EXCEPTIONS" | grep -qw "$ACCOUNT"; then
|
|
debug "$ACCOUNT is confirmed as an exception"
|
|
# shellcheck disable=SC2001
|
|
RESULT=$(sed "s!$ACCOUNT!!" <<<"$RESULT")
|
|
FOUND_EXCEPTIONS="$FOUND_EXCEPTIONS $ACCOUNT"
|
|
else
|
|
debug "$ACCOUNT not found in exceptions"
|
|
fi
|
|
done
|
|
if [ -n "$RESULT" ]; then
|
|
crit "Some accounts have uid 0: $(tr '\n' ' ' <<<"$RESULT")"
|
|
else
|
|
ok "No account with uid 0 appart from root ${FOUND_EXCEPTIONS:+and configured exceptions:}$FOUND_EXCEPTIONS"
|
|
fi
|
|
}
|
|
|
|
# This function will be called if the script status is on enabled mode
|
|
apply() {
|
|
info "Removing accounts with uid 0 may seriously harm your system, report only here"
|
|
}
|
|
|
|
# This function will create the config file for this check with default values
|
|
create_config() {
|
|
cat <<EOF
|
|
status=audit
|
|
# Put here valid accounts with uid 0 separated by spaces
|
|
EXCEPTIONS=""
|
|
EOF
|
|
}
|
|
|
|
# This function will check config parameters required
|
|
check_config() {
|
|
if [ -z "$EXCEPTIONS" ]; then
|
|
EXCEPTIONS="@"
|
|
fi
|
|
}
|
|
|
|
# Source Root Dir Parameter
|
|
if [ -r /etc/default/cis-hardening ]; then
|
|
# shellcheck source=../../debian/default
|
|
. /etc/default/cis-hardening
|
|
fi
|
|
if [ -z "$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
|