debian-cis/bin/hardening/6.1.11_find_unowned_files.sh
Thibault Ayanides 334d743125
fix EXCEPTIONS management (#104)
* FIX(1.1.21, 6.1.10) fix EXCEPTIONS management
* Update changelog
* Refactor test for 6.1.10-14
2021-06-02 13:47:19 +02:00

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#!/bin/bash
# run-shellcheck
#
# CIS Debian Hardening
#
#
# 6.1.11 Ensure no unowned files or directories exist (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="Ensure no unowned files or directories exist."
USER='root'
EXCLUDED=''
# This function will be called if the script status is on enabled / audit mode
audit() {
info "Checking if there are unowned files"
FS_NAMES=$(df --local -P | awk '{if (NR!=1) print $6}')
if [ -n "$EXCLUDED" ]; then
# shellcheck disable=SC2086
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -nouser -regextype 'egrep' ! -regex $EXCLUDED -print 2>/dev/null)
else
# shellcheck disable=SC2086
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -nouser -print 2>/dev/null)
fi
if [ -n "$RESULT" ]; then
crit "Some unowned files are present"
# shellcheck disable=SC2001
FORMATTED_RESULT=$(sed "s/ /\n/g" <<<"$RESULT" | sort | uniq | tr '\n' ' ')
crit "$FORMATTED_RESULT"
else
ok "No unowned files found"
fi
}
# This function will be called if the script status is on enabled mode
apply() {
if [ -n "$EXCLUDED" ]; then
# shellcheck disable=SC2086
RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -nouser -regextype 'egrep' ! -regex $EXCLUDED -ls 2>/dev/null)
else
RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -nouser -ls 2>/dev/null)
fi
if [ -n "$RESULT" ]; then
warn "Applying chown on all unowned files in the system"
df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -nouser -print 2>/dev/null | xargs chown "$USER"
else
ok "No unowned files found, nothing to apply"
fi
}
# This function will check config parameters required
check_config() {
# No param for this function
:
}
# 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