SUBDIR += base-audit

# Created by: Miroslav Lachman

PORTNAME=	base-audit

PORTVERSION=	0.5

CATEGORIES=	security

MASTER_SITES=	# none

DISTFILES=	# none

MAINTAINER=	000.fbsd@quip.cz

COMMENT=	Daily periodic check of vulnerabilities in base system

LICENSE=	BSD3CLAUSE

RUN_DEPENDS=	${LOCALBASE}/sbin/pkg:${PKG_ORIGIN}

NO_ARCH=	yes

NO_BUILD=	yes

NO_INSTALL=	yes

SUB_FILES=	405.pkg-base-audit

PERIODIC_SECURITY=	etc/periodic/security

PLIST_FILES=	${PERIODIC_SECURITY}/405.pkg-base-audit

do-install:

	@${MKDIR} ${STAGEDIR}${PREFIX}/${PERIODIC_SECURITY}

	 ${INSTALL_SCRIPT} ${WRKDIR}/405.pkg-base-audit \

		${STAGEDIR}${PREFIX}/${PERIODIC_SECURITY}

.include <bsd.port.mk>

#!/bin/sh -f

#

# Copyright (c) 2004 Oliver Eikemeier. All rights reserved.

# Copyright (c) 2014 Matthew Seaman <matthew@FreeBSD.org>

# Copyright (c) 2016 Miroslav Lachman <000.fbsd@quip.cz>

#

# 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.

#

# 3. Neither the name of the author nor the names of its contributors may be

#    used to endorse or promote products derived from this software without

#    specific prior written permission.

#

# THIS SOFTWARE IS PROVIDED "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

# COPYRIGHT OWNER 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.

if [ -r /etc/defaults/periodic.conf ]; then

	. /etc/defaults/periodic.conf

	source_periodic_confs

fi

: ${security_status_baseaudit_enable:=YES}

: ${security_status_baseaudit_period:=daily}

: ${security_status_baseaudit_quiet:=NO}

: ${security_status_baseaudit_chroots=$pkg_chroots}

: ${security_status_baseaudit_jails=$pkg_jails}

: ${security_status_baseaudit_jails_ignore=""}

: ${security_status_baseaudit_expiry:=2}

# Compute PKG_DBDIR from the config file.

pkgcmd=%%PREFIX%%/sbin/pkg

PKG_DBDIR=`${pkgcmd} config PKG_DBDIR`

auditfile="${PKG_DBDIR}/vuln.xml"

audit_base() {

	local pkgargs="$1"

	local basedir="$2"

	local rc

	local then

	local now

	local usrlv

	local krnlv

	local strlen

	local chrootv

	local jailv

	local jid

	## get version from chroot

	if [ -n "`echo "$pkgargs" | egrep '^-c'`" ]; then

		if [ -x "$basedir/bin/freebsd-version" ]; then

			chrootv=$($basedir/bin/freebsd-version -u)

			## safety check - strlen

			strlen=$(echo "$chrootv" | wc -c)

			if [ $strlen -gt 17 -o $strlen -lt 11 ]; then

				echo "Wrong version string, cannot run audit"

				return 3

			fi

			usrlv=$(echo $chrootv | sed 's,^,FreeBSD-,;s,-RELEASE-p,_,;s,-RELEASE$,,')

		else

			echo "Cannot guess chroot version"

			return 3

		fi

	## get version from jail

	elif [ -n "`echo "$pkgargs" | egrep '^-j'`" ]; then

		jid=$(echo "$pkgargs" | awk '$1 ~ /^-[j]/ { print $2 }')

		jailv=$(jexec $jid freebsd-version -u)

		## safety check - strlen

		strlen=$(echo "$jailv" | wc -c)

		if [ $strlen -gt 17 -o $strlen -lt 11 ]; then

			echo "Wrong version string, cannot run audit"

			return 3

		fi

		usrlv=$(echo $jailv | sed 's,^,FreeBSD-,;s,-RELEASE-p,_,;s,-RELEASE$,,')

	## get version from host

	else

		usrlv=$(freebsd-version -u | sed 's,^,FreeBSD-,;s,-RELEASE-p,_,;s,-RELEASE$,,')

	fi

	then=`stat -f '%m' "${basedir}${auditfile}" 2> /dev/null` || rc=3

	now=`date +%s` || rc=3

	## Add 10 minutes of padding since the check is in seconds.

	if [ $rc -ne 0 -o \

		$(( 86400 \* "${security_status_baseaudit_expiry}" )) \

		-le $(( ${now} - ${then} + 600 )) ]; then

		## When non-interactive, sleep to reduce congestion on mirrors

		anticongestion

		f="-F"

	else

		echo -n 'Database fetched: '

		date -r "${then}" || rc=3

	fi

	## cannot check kernel in jail or chroot

	if [ -z "`echo "$pkgargs" | egrep '^-[cj]'`" -a `sysctl -n security.jail.jailed` = 0 ]; then

		krnlv=$(freebsd-version -k | sed 's,^,FreeBSD-kernel-,;s,-RELEASE-p,_,;s,-RELEASE$,,')

		${pkgcmd} audit $f $q $krnlv || { rc=$?; [ $rc -lt 3 ] && rc=3; }

	fi

	${pkgcmd} audit $f $q $usrlv || { rc=$?; [ $rc -lt 3 ] && rc=3; }

	return $rc

}

# Use $pkg_chroots to provide a default list of chroots, and

# $pkg_jails to provide a default list of jails (or '*' for all jails)

# for all pkg periodic scripts, or set

# $security_status_baseaudit_chroots and

# $security_status_baseaudit_jails for this script only.

audit_base_all() {

	local rc

	local last_rc

	local jails

	# We always show audit results for the base system, but only print

	# a banner line if we're also showing audit results for any

	# chroots or jails.

	if [ -n "${security_status_baseaudit_chroots}" -o \

		-n "${security_status_baseaudit_jails}" ]; then

		echo "Host system:"

	fi

	audit_base '' ''

	last_rc=$?

	[ $last_rc -gt 1 ] && rc=$last_rc

	for c in $security_status_baseaudit_chroots ; do

		echo

		echo "chroot: $c"

		audit_base "-c $c" $c

		last_rc=$?

		[ $last_rc -gt 1 ] && rc=$last_rc

	done

	case $security_status_baseaudit_jails in

	\*)

		jails=$(jls -q -h name path | sed -e 1d -e 's/ /|/')

		;;

	'')

		jails=

		;;

	*)

		# Given the jail name or jid, find the jail path

		jails=

		for j in $security_status_baseaudit_jails ; do

			p=$(jls -j $j -h name path | sed -e 1d -e 's/ /|/')

			jails="${jails} ${p}"

		done

		;;

	esac

	for j in $jails ; do

		# ignore some jails

		if [ -n "$security_status_baseaudit_jails_ignore" ]; then

			# we iterate to get exact matches because we want substring matches

			# foo should not match foo.bar

			for ignore in $security_status_baseaudit_jails_ignore ; do

				if [ "${j%|*}" == "$ignore" ]; then

					echo

					echo "ignoring jail: ${j%|*}"

					# continue with the main loop

					continue 2

				fi

			done

		fi

		echo

		echo "jail: ${j%|*}"

		audit_base "-j ${j%|*}" ${j##*|}

		last_rc=$?

		[ $last_rc -gt 1 ] && rc=$last_rc

	done

	return $rc

}

security_daily_compat_var security_status_baseaudit_enable

security_daily_compat_var security_status_baseaudit_quiet

security_daily_compat_var security_status_baseaudit_chroots

security_daily_compat_var security_status_baseaudit_jails

security_daily_compat_var security_status_baseaudit_exipiry

rc=0

if check_yesno_period security_status_baseaudit_enable

then

	echo

	echo 'Checking for security vulnerabilities in base (userland & kernel):'

	if ! ${pkgcmd} -N >/dev/null 2>&1 ; then

		echo 'pkg-audit is enabled but pkg is not used'

		rc=2

	else

		case "${security_status_baseaudit_quiet}" in

		[Yy][Ee][Ss])

			q='-q'

			;;

		*)

			q=

			;;

		esac

		audit_base_all ; rc=$?

	fi

fi

exit "$rc"

Audit base system against known vulnerabilities and generate reports

including references to security advisories.

It uses pkg audit and Vuxml database as is used for packages but this script

checks base system.

[

{ type: install

  message: <<EOM

Add the following lines to /etc/periodic.conf(.local) to enable periodic check

	security_status_baseaudit_enable="YES"

	security_status_baseaudit_quiet="NO"

Use pkg_chroots to provide a default list of chroots

and pkg_jails to provide a default list of jails (or '*' for all jails)

for all pkg periodic scripts, or set

	security_status_baseaudit_chroots

and

	security_status_baseaudit_jails

for this script only.

You can also change following variables:

	security_status_baseaudit_period="daily"

	security_status_baseaudit_expiry="2"

EOM

}

]

-