debian-cis/bin/hardening/6.2.17_check_duplicate_gid.sh
2020-12-04 14:08:01 +01:00

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#!/bin/bash
# run-shellcheck
#
# CIS Debian Hardening
#
#
# 6.2.17 Ensure no duplicate GIDs 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 duplicate GIDs exist"
ERRORS=0
# This function will be called if the script status is on enabled / audit mode
audit() {
RESULT=$(get_db group | cut -f3 -d":" | sort -n | uniq -c | awk '{print $1":"$2}')
for LINE in $RESULT; do
debug "Working on line $LINE"
OCC_NUMBER=$(awk -F: '{print $1}' <<<"$LINE")
GROUPID=$(awk -F: '{print $2}' <<<"$LINE")
if [ "$OCC_NUMBER" -gt 1 ]; then
GROUP=$(awk -F: '($3 == n) { print $1 }' n="$GROUPID" /etc/group | xargs)
ERRORS=$((ERRORS + 1))
crit "Duplicate GID ($GROUPID): ${GROUP}"
fi
done
if [ $ERRORS = 0 ]; then
ok "No duplicate GIDs"
fi
}
# This function will be called if the script status is on enabled mode
apply() {
info "Editing automatically gids may seriously harm your system, report only here"
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
# shellcheck source=../../debian/default
. /etc/default/cis-hardening
fi
if [ -z "$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