diff options
Diffstat (limited to 'usr.sbin/bsdinstall/scripts/hardening')
| -rwxr-xr-x | usr.sbin/bsdinstall/scripts/hardening | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/usr.sbin/bsdinstall/scripts/hardening b/usr.sbin/bsdinstall/scripts/hardening new file mode 100755 index 0000000..7a3195e --- /dev/null +++ b/usr.sbin/bsdinstall/scripts/hardening @@ -0,0 +1,79 @@ +#!/bin/sh +#- +# Copyright (c) 2016 Bartek Rutkowski +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# $FreeBSD$ + +: ${DIALOG_OK=0} + +echo -n > $BSDINSTALL_TMPETC/rc.conf.services + +exec 3>&1 +FEATURES=$( dialog --backtitle "FreeBSD Installer" \ + --title "System Hardening" --nocancel --notags --separate-output \ + --checklist "Choose system security hardening options:" \ + 0 0 0 \ + "hide_uids" "Hide processes running as other users" ${hide_uids:-off} \ + "hide_gids" "Hide processes running as other groups" ${hide_gids:-off} \ + "read_msgbuf" "Disable reading kernel message buffer for unprivileged users" ${read_msgbuf:-off} \ + "proc_debug" "Disable process debugging facilities for unprivileged users" ${proc_debug:-off} \ + "random_pid" "Randomize the PID of newly created processes" ${random_id:-off} \ + "stack_guard" "Insert stack guard page ahead of the growable segments" ${stack_guard:-off} \ + "clear_tmp" "Clean the /tmp filesystem on system startup" ${clear_tmp:-off} \ + "disable_syslogd" "Disable opening Syslogd network socket (disables remote logging)" ${disable_syslogd:-off} \ + "disable_sendmail" "Disable Sendmail service" ${disable_sendmail:-off} \ +2>&1 1>&3 ) +exec 3>&- + +for feature in $FEATURES; do + if [ "$feature" = "hide_uids" ]; then + echo security.bsd.see_other_uids=0 >> $BSDINSTALL_TMPETC/sysctl.conf.hardening + fi + if [ "$feature" = "hide_gids" ]; then + echo security.bsd.see_other_gids=0 >> $BSDINSTALL_TMPETC/sysctl.conf.hardening + fi + if [ "$feature" = "read_msgbuf" ]; then + echo security.bsd.unprivileged_read_msgbuf=0 >> $BSDINSTALL_TMPETC/sysctl.conf.hardening + fi + if [ "$feature" = "proc_debug" ]; then + echo security.bsd.unprivileged_proc_debug=0 >> $BSDINSTALL_TMPETC/sysctl.conf.hardening + fi + if [ "$feature" = "random_id" ]; then + echo kern.randompid=$(jot -r 1 9999) >> $BSDINSTALL_TMPETC/sysctl.conf.hardening + fi + if [ "$feature" = "stack_guard" ]; then + echo security.bsd.stack_guard_page=1 >> $BSDINSTALL_TMPETC/sysctl.conf.hardening + fi + if [ "$feature" = "clear_tmp" ]; then + echo 'clear_tmp_enable="YES"' >> $BSDINSTALL_TMPETC/rc.conf.hardening + fi + if [ "$feature" = "disable_syslogd" ]; then + echo 'syslogd_flags="-ss"' >> $BSDINSTALL_TMPETC/rc.conf.hardening + fi + if [ "$feature" = "disable_sendmail" ]; then + echo 'sendmail_enable="NONE"' >> $BSDINSTALL_TMPETC/rc.conf.hardening + fi +done + |
