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.

security/Makefile

@@ -38,6 +38,7 @@
     SUBDIR += barnyard2
     SUBDIR += barnyard2-sguil
     SUBDIR += base
+    SUBDIR += base-audit
     SUBDIR += bcrypt
     SUBDIR += bcwipe
     SUBDIR += bdes

security/base-audit/Makefile

@@ -0,0 +1,32 @@
+# Created by: Miroslav Lachman
+# $FreeBSD$
+
+PORTNAME=	base-audit
+PORTVERSION=	0.1
+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=	pkg:ports-mgmt/pkg
+
+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>

security/base-audit/files/405.pkg-base-audit.in

@@ -0,0 +1,206 @@
+#!/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.
+#
+# $FreeBSD$
+#
+
+if [ -r /etc/defaults/periodic.conf ]; then
+	. /etc/defaults/periodic.conf
+	source_periodic_confs
+fi
+
+# 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 \
+		$(( 86400 \* "${daily_status_security_baseaudit_expiry:-2}" )) \
+		-le $(( ${now} - ${then} + 600 )) ]; then
+		## Random delay so the mirrors do not get slammed when run by periodic(8)
+		if [ ! -t 0 ]; then
+			sleep `jot -r 1 0 600`
+		fi
+		f="-F"
+	else
+		echo -n 'Database fetched: '
+		date -r "${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
+# $daily_status_security_baseaudit_chroots and
+# $daily_status_security_baseaudit_jails for this script only.
+
+audit_base_all() {
+	local rc
+	local last_rc
+	local jails
+
+	: ${daily_status_security_baseaudit_chroots=$pkg_chroots}
+	: ${daily_status_security_baseaudit_jails=$pkg_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 "${daily_status_security_baseaudit_chroots}" -o \
+		-n "${daily_status_security_baseaudit_jails}" ]; then
+		echo "Host system:"
+	fi
+
+	audit_base '' ''
+	last_rc=$?
+	[ $last_rc -gt 1 ] && rc=$last_rc
+
+	for c in $daily_status_security_baseaudit_chroots ; do
+		echo
+		echo "chroot: $c"
+		audit_base "-c $c" $c
+		last_rc=$?
+		[ $last_rc -gt 1 ] && rc=$last_rc
+	done
+
+	case $daily_status_security_baseaudit_jails in
+	\*)
+		jails=$(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 $daily_status_security_baseaudit_jails ; do
+			p=$(jls -j $j -h name path | sed -e 1d -e 's/ /|/')
+			jails="${jails} ${p}"
+		done
+		;;
+	esac
+
+	for j in $jails ; do
+		echo
+		echo "jail: ${j%|*}"
+		audit_base "-j ${j%|*}" ${j##*|}
+		last_rc=$?
+		[ $last_rc -gt 1 ] && rc=$last_rc
+	done
+
+	return $rc
+}
+
+rc=0
+
+case "${daily_status_security_baseaudit_enable:-YES}" in
+[Nn][Oo]) ;;
+*)
+	echo
+	echo 'Checking for security vulnerabilities in base (userland & kernel):'
+
+	if ! ${pkgcmd} -N >/dev/null 2>&1 ; then
+		echo 'pkg-audit is enabled but pkg is not used'
+		rc=2
+	else
+		case "${daily_status_security_baseaudit_quiet:-NO}" in
+		[Yy][Ee][Ss])
+			q='-q'
+			;;
+		*)
+			q=
+			;;
+		esac
+
+		audit_base_all ; rc=$?
+	fi
+	;;
+esac
+
+exit "$rc"

security/base-audit/files/pkg-message.in

@@ -0,0 +1,11 @@
+Add the following lines to /etc/periodic.conf(.local) to enable periodic check
+	daily_status_security_baseaudit_enable="YES"
+	daily_status_security_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
+	daily_status_security_baseaudit_chroots
+and
+	daily_status_security_baseaudit_jails
+for this script only.

security/base-audit/pkg-descr

@@ -0,0 +1,4 @@
+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.