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checksec
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#!/usr/bin/env bash
#
# The BSD License (http://www.opensource.org/licenses/bsd-license.php)
# specifies the terms and conditions of use for checksec.sh:
#
# Copyright (c) 2014-2019, Brian Davis
# Copyright (c) 2013, Robin David
# Copyright (c) 2009-2011, Tobias Klein
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * 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.
# * Neither the name of Tobias Klein nor the name of trapkit.de may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
# COPYRIGHT HOLDER 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.
#
# --- Modified Version ---
# Name : checksec.sh
# Version : 1.7.0
# Author : Brian Davis
# Date : Feburary 2014
# Download: https://github.com/slimm609/checksec.sh
#
# --- Modified Version ---
# Name : checksec.sh
# Version : based on 1.5
# Author : Robin David
# Date : October 2013
# Download: https://github.com/RobinDavid/checksec
#
# --- Original version ---
# Name : checksec.sh
# Version : 1.5
# Author : Tobias Klein
# Date : November 2011
# Download: http://www.trapkit.de/tools/checksec.html
# Changes : http://www.trapkit.de/tools/checksec_changes.txt
#set global lang to C
export LC_ALL="C"
# global vars
debug=false
have_readelf=1
verbose=false
format="cli"
SCRIPT_NAME="checksec"
SCRIPT_URL="https://github.com/slimm609/checksec.sh/raw/master/${SCRIPT_NAME}"
SIG_URL="https://github.com/slimm609/checksec.sh/raw/master/$(basename ${SCRIPT_NAME} .sh).sig"
SCRIPT_VERSION=2019072901
SCRIPT_MAJOR=2
SCRIPT_MINOR=1
SCRIPT_REVISION=0
pkg_release=false
commandsmissing=false
OPT=0
extended_checks=false
# FORTIFY_SOURCE vars
FS_end=_chk
FS_cnt_total=0
FS_cnt_checked=0
FS_cnt_unchecked=0
FS_chk_func_libc=0
FS_functions=0
FS_libc=0
# check for required files and deps first
# check if command exists
command_exists () {
type "${1}" > /dev/null 2>&1;
}
if [[ $(id -u) != 0 ]]; then
export PATH=${PATH}:/sbin/:/usr/sbin/
fi
for command in cat awk sysctl uname mktemp openssl grep stat file find sort fgrep head ps readlink basename id which xargs; do
if ! (command_exists ${command}); then
echo -e "\e[31mWARNING: '${command}' not found! It's required for most checks.\e[0m"
commandsmissing=true
fi
done
if [[ ${command}smissing == true ]]; then
echo -e "\n\e[31mWARNING: Not all necessary commands found. Some tests might not work!\e[0m\n"
sleep 2
fi
if (command_exists readelf); then
readelf=readelf
elif (command_exists eu-readelf); then
readelf=eu-readelf
elif (command_exists greadelf); then
readelf=greadelf
else
echo -e "\n\e[31mERROR: readelf is a required tool for almost all tests. Aborting...\e[0m\n"
exit
fi
sysarch=$(uname -m)
if [[ "${sysarch}" == "x86_64" ]]; then
arch="64"
elif [[ "${sysarch}" == "i?86" ]]; then
arch="32"
elif [[ "${sysarch}" =~ "arm" ]]; then
arch="arm"
elif [[ "${sysarch}" =~ "aarch64" ]]; then
arch="aarch64"
fi
#openssl public key for verification of updates
read -r PUBKEY <<EOF
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
EOF
# Fetch the update
fetch() {
if type wget > /dev/null 2>&1 ; then
${debug} && echo "fetching update via wget"
wget --no-check-certificate -O "${2}" "${1}" >/dev/null 2>&1
elif type curl > /dev/null 2>&1 ; then
${debug} && echo "fetching update via curl"
curl --insecure --remote-name -o "${2}" "${1}" >/dev/null 2>&1
else
echo 'Warning: Neither wget nor curl is available. online updates unavailable' >&2
exit 1
fi
}
# Version compare
vercomp () {
if [[ "${1}" == "${2}" ]]
then
return 0
fi
local IFS=.
local i ver1="${1}" ver2="${2}"
# fill empty fields in ver1 with zeros
for ((i=${#ver1[@]}; i<${#ver2[@]}; i++))
do
ver1[i]=0
done
for ((i=0; i<${#ver1[@]}; i++))
do
if [[ -z ${ver2[i]} ]]
then
# fill empty fields in ver2 with zeros
ver2[i]=0
fi
if ((10#${ver1[i]} > 10#${ver2[i]}))
then
return 1
fi
if ((10#${ver1[i]} < 10#${ver2[i]}))
then
return 2
fi
done
return 0
}
# Update/Upgrade
upgrade () {
if ${pkg_release}; then
printf "\033[31mError: Unknown option '%s'.\033[m\n\n" "${1}"
help
exit 1
fi
umask 027
TMP_FILE=$(mktemp /tmp/checksec.XXXXXXXXXX)
SIG_FILE=$(mktemp /tmp/checksec_sig.XXXXXXXX)
PUBKEY_FILE=$(mktemp /tmp/checksec_pubkey.XXXXXXXXXX)
fetch "${SCRIPT_URL}" "${TMP_FILE}"
fetch "${SIG_URL}" "${SIG_FILE}"
echo "${PUBKEY}" | base64 -d > "${PUBKEY_FILE}"
if ! openssl dgst -sha256 -verify "${PUBKEY_FILE}" -signature "${SIG_FILE}" "${TMP_FILE}" >/dev/null 2>&1; then
echo "file signature does not match. Update may be tampered"
rm -f "${TMP_FILE}" "${SIG_FILE}" "${PUBKEY_FILE}" >/dev/null 2>&1
exit 1
fi
UPDATE_VERSION=$(grep "^SCRIPT_VERSION" "${TMP_FILE}" | awk -F"=" '{ print $2 }')
if [[ "${SCRIPT_VERSION}" != "${UPDATE_VERSION}" ]]; then
PERMS=$(stat -c "%a" "$0")
rm -f "${SIG_FILE}" "${PUBKEY_FILE}" >/dev/null 2>&1
mv "${TMP_FILE}" "$0" >/dev/null 2>&1
exit_status=$?
if [[ "${exit_status}" -eq "0" ]]; then
echo "checksec.sh updated - Rev. ${UPDATE_VERSION}"
chmod "${PERMS}" "${0}"
else
echo "Error: Could not update... Please check permissions"
rm -f "${TMP_FILE}" >/dev/null 2>&1
exit 1
fi
else
echo "checksec.sh not updated... Already on latest version"
rm -f "${TMP_FILE}" "${SIG_FILE}" "${PUBKEY_FILE}" >/dev/null 2>&1
exit 1
fi
exit 0
}
# version information
version() {
echo "checksec v${SCRIPT_MAJOR}.${SCRIPT_MINOR}.${SCRIPT_REVISION}, Brian Davis, github.com/slimm609/checksec.sh, Dec 2015"
echo "Based off checksec v1.5, Tobias Klein, www.trapkit.de, November 2011"
echo
}
# help
help() {
echo "Usage: checksec [--format={cli,csv,xml,json}] [OPTION]"
echo
echo
echo "Options:"
echo
echo " ## Checksec Options"
echo " --file={file}"
echo " --dir={directory}"
echo " --proc={process name}"
echo " --proc-all"
echo " --proc-libs={process ID}"
echo " --kernel[=kconfig]"
echo " --fortify-file={executable-file}"
echo " --fortify-proc={process ID}"
echo " --version"
echo " --help"
if ! ${pkg_release}; then
echo " --update or --upgrade"
fi
echo
echo " ## Modifiers"
echo " --debug"
echo " --verbose"
echo " --format={cli,csv,xml,json}"
echo " --output={cli,csv,xml,json}"
echo " --extended"
echo
echo "For more information, see:"
echo " http://github.com/slimm609/checksec.sh"
echo
}
# format
format () {
list="cli csv xml json"
if [[ -n "${output_format}" ]]; then
if [[ ! ${list} =~ ${output_format} ]]; then
printf "\033[31mError: Please provide a valid format {cli, csv, xml, json}.\033[m\n\n"
exit 1
fi
fi
if [[ "${output_format}" == "xml" ]]; then
echo '<?xml version="1.0" encoding="UTF-8"?>'
fi
format="${output_format}"
}
#run help if nothing is passed
if [[ $# -lt 1 ]]; then
help
exit 1
fi
echo_message() {
if [[ ${format} == "csv" ]]; then
echo -n -e "$2"
elif [[ ${format} == "xml" ]]; then
echo -n -e "$3"
elif [[ ${format} == "json" ]]; then
echo -n -e "$4"
else #default to cli
echo -n -e "${1}"
fi
}
# check selinux status
getsestatus() {
${debug} && echo -e "\n***fuction getsestatus"
if (command_exists getenforce); then
${debug} && echo "***fuction getsestatus->getenforce"
sestatus=$(getenforce)
if [[ "${sestatus}" == "Disabled" ]]; then
status=0
elif [[ "${sestatus}" == "Permissive" ]]; then
status=1
elif [[ "${sestatus}" == "Enforcing" ]]; then
status=2
fi
elif (command_exists sestatus); then
${debug} && echo "***fuction getsestatus->sestatus"
sestatus=$(sestatus | grep "SELinux status" | awk '{ print $3}')
if [[ "${sestatus}" == "disabled" ]]; then
status=0
elif [[ "${sestatus}" == "enabled" ]]; then
sestatus2=$(sestatus | grep "Current" | awk '{ print $3}')
if [[ "${sestatus2}" == "permissive" ]]; then
status=1
elif [[ "${sestatus2}" == "enforcing" ]]; then
status=2
fi
fi
fi
return ${status}
}
# check if directory exists
dir_exists () {
${debug} && echo "fuction dir_exists"
if [[ -d "${1}" ]] ; then
return 0
else
return 1
fi
}
# check user privileges
root_privs () {
${debug} && echo "***function root_privs"
if [[ $(/usr/bin/id -u) -eq 0 ]] ; then
return 0
else
return 1
fi
}
# check if input is numeric
isNumeric () {
${debug} && echo "***function isNumeric"
echo "$@" | grep -q -v "[^0-9]"
}
# check if input is a string
isString () {
${debug} && echo "***function isString"
echo "$@" | grep -q -v "[^ A-Z_a-z]"
}
# check file(s)
filecheck() {
${debug} && echo "***function filecheck"
# check for RELRO support
${debug} && echo "***function filecheck->RELRO"
if ${readelf} -l "${1}" 2>/dev/null | grep -q 'GNU_RELRO'; then
if ${readelf} -d "${1}" 2>/dev/null | grep -q 'BIND_NOW'; then
echo_message '\033[32mFull RELRO \033[m ' 'Full RELRO,' '<file relro="full"' " \"${1}\": { \"relro\":\"full\","
else
echo_message '\033[33mPartial RELRO\033[m ' 'Partial RELRO,' '<file relro="partial"' " \"${1}\": { \"relro\":\"partial\","
fi
else
echo_message '\033[31mNo RELRO \033[m ' 'No RELRO,' '<file relro="no"' " \"file\": { \"relro\":\"no\","
fi
# check for stack canary support
${debug} && echo -e "\n***function filecheck->canary"
if ${readelf} -s "${1}" 2>/dev/null | grep -Eq '__stack_chk_fail|__intel_security_cookie'; then
echo_message '\033[32mCanary found \033[m ' 'Canary found,' ' canary="yes"' '"canary":"yes",'
else
echo_message '\033[31mNo canary found\033[m ' 'No Canary found,' ' canary="no"' '"canary":"no",'
fi
# check for NX support
${debug} && echo -e "\n***function filecheck->nx"
if ${readelf} -W -l "${1}" 2>/dev/null | grep -q 'GNU_STACK'; then
if ${readelf} -W -l "${1}" 2>/dev/null | grep 'GNU_STACK' | grep -q 'RWE'; then
echo_message '\033[31mNX disabled\033[m ' 'NX disabled,' ' nx="no"' '"nx":"no",'
else
echo_message '\033[32mNX enabled \033[m ' 'NX enabled,' ' nx="yes"' '"nx":"yes",'
fi
else
echo_message '\033[31mNX disabled\033[m ' 'NX disabled,' ' nx="no"' '"nx":"no",'
fi
# check for PIE support
${debug} && echo -e "\n***function filecheck->pie"
if ${readelf} -h "${1}" 2>/dev/null | grep -q 'Type:[[:space:]]*EXEC'; then
echo_message '\033[31mNo PIE \033[m ' 'No PIE,' ' pie="no"' '"pie":"no",'
elif ${readelf} -h "${1}" 2>/dev/null | grep -q 'Type:[[:space:]]*DYN'; then
if ${readelf} -d "${1}" 2>/dev/null | grep -q 'DEBUG'; then
echo_message '\033[32mPIE enabled \033[m ' 'PIE enabled,' ' pie="yes"' '"pie":"yes",'
else
echo_message '\033[33mDSO \033[m ' 'DSO,' ' pie="dso"' '"pie":"dso",'
fi
else
echo_message '\033[33mNot an ELF file\033[m ' 'Not an ELF file,' ' pie="not_elf"' '"pie":"not_elf",'
fi
if ${extended_checks}; then
# check if compiled with Clang CFI
${debug} && echo -e "\n***function filecheck->clangcfi"
#if $readelf -s "$1" 2>/dev/null | grep -Eq '\.cfi'; then
read -a cfifunc <<< $($readelf -s "${1}" 2>/dev/null | grep .cfi | awk '{ print $8 }' )
func=${cfifunc/.cfi/}
if [ ! -z "$cfifunc" ] && $readelf -s "$1" 2>/dev/null | grep -q "$func$"; then
echo_message '\033[32mClang CFI found \033[m ' 'with CFI,' ' clangcfi="yes"' '"clangcfi":"yes",'
else
echo_message '\033[31mNo Clang CFI found\033[m ' 'without CFI,' ' clangcfi="no"' '"clangcfi":"no",'
fi
# check if compiled with Clang SafeStack
${debug} && echo -e "\n***function filecheck->safestack"
if $readelf -s "$1" 2>/dev/null | grep -Eq '__safestack_init'; then
echo_message '\033[32mSafeStack found \033[m ' 'with SafeStack,' ' safestack="yes"' '"safestack":"yes",'
else
echo_message '\033[31mNo SafeStack found\033[m ' 'without SafeStack,' ' safestack="no"' '"safestack":"no",'
fi
fi
# check for rpath / run path
${debug} && echo -e "\n***function filecheck->rpath"
# search for a line that matches RPATH and extract the colon-separated path list within brackets
# example input: "0x000000000000000f (RPATH) Library rpath: [/lib/systemd:/lib/apparmor]"
IFS=: read -a rpath_array <<< $(${readelf} -d "${1}" 2>/dev/null | awk -F'[][]' '/RPATH/ {print $2}')
if [[ "${#rpath_array[@]}" -gt 0 ]]; then
if xargs stat -c %A <<< ${rpath_array[*]} 2>/dev/null | grep -q 'rw'; then
echo_message '\033[31mRW-RPATH \033[m ' 'RPATH,' ' rpath="yes"' '"rpath":"yes",'
else
echo_message '\033[31mRPATH \033[m ' 'RPATH,' ' rpath="yes"' '"rpath":"yes",'
fi
else
echo_message '\033[32mNo RPATH \033[m ' 'No RPATH,' ' rpath="no"' '"rpath":"no",'
fi
${debug} && echo -e "\n***function filecheck->runpath"
# search for a line that matches RUNPATH and extract the colon-separated path list within brackets
IFS=: read -a runpath_array <<< $(${readelf} -d "${1}" 2>/dev/null | awk -F'[][]' '/RUNPATH/ {print $2}')
if [[ "${#runpath_array[@]}" -gt 0 ]]; then
if xargs stat -c %A <<< ${runpath_array[*]} 2>/dev/null | grep -q 'rw'; then
echo_message '\033[31mRW-RUNPATH \033[m ' 'RUNPATH,' ' runpath="yes"' '"runpath":"yes",'
else
echo_message '\033[31mRUNPATH \033[m ' 'RUNPATH,' ' runpath="yes"' '"runpath":"yes",'
fi
else
echo_message '\033[32mNo RUNPATH \033[m ' 'No RUNPATH,' ' runpath="no"' '"runpath":"no",'
fi
# check for stripped symbols in the binary
SYM_cnt=' '
SYM_cnt=( $(${readelf} --symbols "${1}" 2>/dev/null | grep '\.symtab' | cut -d' ' -f5 | cut -d: -f1))
if ${readelf} --symbols "${1}" 2>/dev/null | grep -q '\.symtab'; then
echo_message "\033[31m${SYM_cnt[0]} Symbols \033[m " 'Symbols,' ' symbols="yes"' '"symbols":"yes",'
else
echo_message '\033[32mNo Symbols \033[m ' 'No Symbols,' ' symbols="no"' '"symbols":"no",'
fi
# check for FORTIFY SOURCE
${debug} && echo "***function filecheck->fortify"
if [[ -e /lib/libc.so.6 ]] ; then
FS_libc=/lib/libc.so.6
elif [[ -e /lib/libc.so.7 ]] ; then
FS_libc=/lib/libc.so.7
elif [[ -e /lib/libc.so ]] ; then
FS_libc=/lib/libc.so
elif [[ -e /lib64/libc.so.6 ]] ; then
FS_libc=/lib64/libc.so.6
elif [[ -e /lib/i386-linux-gnu/libc.so.6 ]] ; then
FS_libc=/lib/i386-linux-gnu/libc.so.6
elif [[ -e /lib/x86_64-linux-gnu/libc.so.6 ]] ; then
FS_libc=/lib/x86_64-linux-gnu/libc.so.6
elif [[ -e /lib/arm-linux-gnueabihf/libc.so.6 ]] ; then
FS_libc=/lib/arm-linux-gnueabihf/libc.so.6
elif [[ -e /lib/aarch64-linux-gnu/libc.so.6 ]] ; then
FS_libc=/lib/aarch64-linux-gnu/libc.so.6
elif [[ -e /usr/x86_64-gentoo-linux-musl/bin/ld ]] ; then
FS_libc=/usr/x86_64-gentoo-linux-musl/bin/ld
else
printf "\033[31mError: libc not found.\033[m\n\n"
exit 1
fi
FS_chk_func_libc="$(${readelf} -s $FS_libc 2>/dev/null | sed -ne 's/.*__\(.*_chk\)@@.*/\1/p')"
FS_func_libc="$(echo "${FS_chk_func_libc}" | sed 's/_chk$//')"
FS_functions="$(${readelf} --dyn-syms "${1}" 2>/dev/null | awk '{ print $8 }' | sed -e 's/_*//' -e 's/@.*//' -e '/^$/d')"
FS_cnt_checked=$(fgrep -xf <(sort <<< "${FS_chk_func_libc}") <(sort <<< "${FS_functions}") | wc -l)
FS_cnt_unchecked=$(fgrep -xf <(sort <<< "${FS_func_libc}") <(sort <<< "${FS_functions}") | wc -l)
FS_cnt_total=$((FS_cnt_unchecked+FS_cnt_checked))
if [[ "${FS_functions}" =~ _chk ]]; then
echo_message '\033[32mYes\033[m' 'Yes,' ' fortify_source="yes" ' '"fortify_source":"yes",'
else
echo_message "\033[31mNo\033[m" "No," ' fortify_source="no" ' '"fortify_source":"no",'
fi
echo_message "\t${FS_cnt_checked}\t" ${FS_cnt_checked}, "fortified=\"${FS_cnt_checked}\" " "\"fortified\":\"${FS_cnt_checked}\","
echo_message "\t${FS_cnt_total}\t" ${FS_cnt_total} "fortify-able=\"${FS_cnt_total}\"" "\"fortify-able\":\"${FS_cnt_total}\""
}
# check process(es)
proccheck() {
${debug} && echo -e "\n***function proccheck"
# check for RELRO support
${debug} && echo "***function proccheck->RELRO"
if ${readelf} -l "${1}/exe" 2>/dev/null | grep -q 'Program Headers'; then
if ${readelf} -l "${1}/exe" 2>/dev/null | grep -q 'GNU_RELRO'; then
if ${readelf} -d "${1}/exe" 2>/dev/null | grep -q 'BIND_NOW'; then
echo_message '\033[32mFull RELRO \033[m ' 'Full RELRO,' ' relro="full"' '"relro":"full",'
else
echo_message '\033[33mPartial RELRO\033[m ' 'Partial RELRO,' ' relro="partial"' '"relro":"partial",'
fi
else
echo_message '\033[31mNo RELRO \033[m ' 'No RELRO,' ' relro="no"' '"relro":"no",'
fi
else
echo -n -e '\033[31mPermission denied (please run as root)\033[m\n'
exit 1
fi
# check for stack canary support
${debug} && echo -e "\n***function proccheck->canary"
if ${readelf} -s "${1}/exe" 2>/dev/null | grep -q 'Symbol table'; then
if ${readelf} -s "${1}/exe" 2>/dev/null | grep -Eq '__stack_chk_fail|__intel_security_cookie'; then
echo_message '\033[32mCanary found \033[m ' 'Canary found,' ' canary="yes"' '"canary":"yes",'
else
echo_message '\033[31mNo canary found \033[m ' 'No Canary found,' ' canary="no"' '"canary":"no",'
fi
else
if [[ "${1}" == "1" ]] ; then
echo_message '\033[33mPermission denied \033[m ' 'Permission denied,' ' canary="Permission denied"' '"canary":"Permission denied",'
else
echo_message '\033[33mNo symbol table found \033[m ' 'No symbol table found,' ' canary="No symbol table found"' '"canary":"No symbol table found",'
fi
fi
if ${extended_checks}; then
# check if compiled with Clang CFI
$debug && echo -e "\n***function proccheck->clangcfi"
#if $readelf -s "$1" 2>/dev/null | grep -Eq '\.cfi'; then
read -a cfifunc <<< $($readelf -s "$1/exe" 2>/dev/null | grep .cfi | awk '{ print $8 }' )
func=${cfifunc/.cfi/}
if [ ! -z "$cfifunc" ] && $readelf -s "$1/exe" 2>/dev/null | grep -q "$func$"; then
echo_message '\033[32mClang CFI found \033[m ' 'with CFI,' ' clangcfi="yes"' '"clangcfi":"yes",'
else
echo_message '\033[31mNo Clang CFI found\033[m ' 'without CFI,' ' clangcfi="no"' '"clangcfi":"no",'
fi
# check if compiled with Clang SafeStack
$debug && echo -e "\n***function proccheck->safestack"
if $readelf -s "$1/exe" 2>/dev/null | grep -Eq '__safestack_init'; then
echo_message '\033[32mSafeStack found \033[m ' 'with SafeStack,' ' safestack="yes"' '"safestack":"yes",'
else
echo_message '\033[31mNo SafeStack found\033[m ' 'without SafeStack,' ' safestack="no"' '"safestack":"no",'
fi
fi
# check for Seccomp mode
${debug} && echo -e "\n***function proccheck->Seccomp"
seccomp=$(grep 'Seccomp:' "${1}/status" 2> /dev/null | cut -b10)
if [[ "${seccomp}" == "1" ]] ; then
echo_message '\033[32mSeccomp strict\033[m ' 'Seccomp strict,' ' seccomp="strict"' '"seccomp":"strict",'
elif [[ "${seccomp}" == "2" ]] ; then
echo_message '\033[32mSeccomp-bpf \033[m ' 'Seccomp-bpf,' ' seccomp="bpf"' '"seccomp":"bpf",'
else
echo_message '\033[31mNo Seccomp \033[m ' 'No Seccomp,' ' seccomp="no"' '"seccomp":"no",'
fi
# first check for PaX support
${debug} && echo -e "\n***function proccheck->PAX"
if grep -q 'PaX:' "${1}/status" 2> /dev/null ; then
pageexec=$(grep 'PaX:' "${1}/status" 2> /dev/null | cut -b6)
segmexec=$(grep 'PaX:' "${1}/status" 2> /dev/null | cut -b10)
mprotect=$(grep 'PaX:' "${1}/status" 2> /dev/null | cut -b8)
randmmap=$(grep 'PaX:' "${1}/status" 2> /dev/null | cut -b9)
if [[ "${pageexec}" = "P" || "${segmexec}" = "S" ]] && [[ "${mprotect}" = "M" && "${randmmap}" = "R" ]] ; then
echo_message '\033[32mPaX enabled\033[m ' 'Pax enabled,' ' pax="yes"' '"pax":"yes",'
elif [[ "${pageexec}" = "p" && "${segmexec}" = "s" && "${randmmap}" = "R" ]] ; then
echo_message '\033[33mPaX ASLR only\033[m ' 'Pax ASLR only,' ' pax="aslr_only"' '"pax":"aslr_only",'
elif [[ "${pageexec}" = "P" || "${segmexec}" = "S" ]] && [[ "${mprotect}" = "m" && "${randmmap}" = "R" ]] ; then
echo_message '\033[33mPaX mprot off \033[m' 'Pax mprot off,' ' pax="mprot_off"' '"pax":"mprot_off",'
elif [[ "${pageexec}" = "P" || "${segmexec}" = "S" ]] && [[ "${mprotect}" = "M" && "${randmmap}" = "r" ]] ; then
echo_message '\033[33mPaX ASLR off\033[m ' 'Pax ASLR off,' ' pax="aslr_off"' '"pax":"aslr_off",'
elif [[ "${pageexec}" = "P" || "${segmexec}" = "S" ]] && [[ "${mprotect}" = "m" && "${randmmap}" = "r" ]] ; then
echo_message '\033[33mPaX NX only\033[m ' 'Pax NX only,' ' pax="nx_only"' '"pax":"nx_only",'
else
echo_message '\033[31mPaX disabled\033[m ' 'Pax disabled,' ' pax="no"' '"pax":"no",'
fi
# fallback check for NX support
${debug} && echo -e "\n***function proccheck->NX"
elif ${readelf} -W -l "${1}/exe" 2>/dev/null | grep 'GNU_STACK' | grep -q 'RWE'; then
echo_message '\033[31mNX disabled\033[m ' 'NX disabled,' ' nx="no"' '"nx":"no",'
else
echo_message '\033[32mNX enabled \033[m ' 'NX enabled,' ' pax="yes"' '"nx":"yes",'
fi
# check for PIE support
${debug} && echo -e "\n***function proccheck->PIE"
if ${readelf} -h "${1}/exe" 2>/dev/null | grep -q 'Type:[[:space:]]*EXEC'; then
echo_message '\033[31mNo PIE \033[m ' 'No PIE,' ' pie="no"' '"pie":"no",'
elif ${readelf} -h "${1}/exe" 2>/dev/null | grep -q 'Type:[[:space:]]*DYN'; then
if ${readelf} -d "${1}/exe" 2>/dev/null | grep -q 'DEBUG'; then
echo_message '\033[32mPIE enabled \033[m ' 'PIE enabled,' ' pie="yes"' '"pie":"yes",'
else
echo_message '\033[33mDynamic Shared Object\033[m ' 'Dynamic Shared Object,' ' pie="dso"' '"pie":"dso",'
fi
else
echo_message '\033[33mNot an ELF file \033[m ' 'Not an ELF file,' ' pie="not_elf"' '"pie":"not_elf",'
fi
#check for forifty source support
FS_functions=( $(${readelf} -s "${1}/exe" 2>/dev/null | awk '{ print $8 }' | sed 's/_*//' | sed -e 's/@.*//') )
for ((FS_elem_functions=0; FS_elem_functions<${#FS_functions[@]}; FS_elem_functions++))
do
if [[ ${FS_functions[$FS_elem_functions]} =~ _chk ]] ; then
echo_message '\033[32mYes\033[m' 'Yes' " fortify_source='yes'>" '"fortify_source":"yes" }'
return
fi
done
echo_message "\033[31mNo\033[m" "No" " fortify_source='no'>" '"fortify_source":"no" }'
}
# check mapped libraries
libcheck() {
${debug} && echo "***function libcheck"
libs=( $(awk '{ print $6 }' "/proc/${1}/maps" | grep '/' | sort -u | xargs file | grep ELF | awk '{ print $1 }' | sed 's/:/ /') )
echo_message "\n* Loaded libraries (file information, # of mapped files: ${#libs[@]}):\n\n" "" "" "\"libs\": {"
for ((element=0; element<${#libs[@]}; element++))
do
echo_message " ${libs[$element]}:\n" "${libs[$element]}," "" ""
echo_message " " "" " " ""
filecheck "${libs[$element]}"
if [[ ${element} == $((${#libs[@]} - 1)) ]]; then
echo_message "\n\n" "\n" " filename='${libs[$element]}' />\n" ""
else
echo_message "\n\n" "\n" " filename='${libs[$element]}' />\n" "},"
fi
done
}
# check for system-wide ASLR support
aslrcheck() {
${debug} && echo "***function aslrcheck"
# PaX ASLR support
${debug} && echo -e "\n***function aslrcheck->PAX ASLR"
if ! (grep -q 'Name:' /proc/1/status 2> /dev/null) ; then
echo_message '\033[33m insufficient privileges for PaX ASLR checks\033[m\n' '' '' ''
echo_message ' Fallback to standard Linux ASLR check' '' '' ''
fi
if grep -q 'PaX:' /proc/1/status 2> /dev/null; then
if grep -q 'PaX:' /proc/1/status 2> /dev/null | grep -q 'R'; then
echo_message '\033[32mPaX ASLR enabled\033[m\n\n' '' '' ''
else
echo_message '\033[31mPaX ASLR disabled\033[m\n\n' '' '' ''
fi
else
${debug} && echo -e "\n***function aslrcheck->randomize_va_space"
# standard Linux 'kernel.randomize_va_space' ASLR support
# (see the kernel file 'Documentation/sysctl/kernel.txt' for a detailed description)
echo_message " (kernel.randomize_va_space): " '' '' ''
if sysctl -a 2>/dev/null | grep -q 'kernel.randomize_va_space = 1'; then
echo_message '\033[33mPartial (Setting: 1)\033[m\n\n' '' '' ''
echo_message " Description - Make the addresses of mmap base, stack and VDSO page randomized.\n" '' '' ''
echo_message " This, among other things, implies that shared libraries will be loaded to \n" '' '' ''
echo_message " random addresses. Also for PIE-linked binaries, the location of code start\n" '' '' ''
echo_message " is randomized. Heap addresses are *not* randomized.\n\n" '' '' ''
elif sysctl -a 2>/dev/null | grep -q 'kernel.randomize_va_space = 2'; then
echo_message '\033[32mFull (Setting: 2)\033[m\n\n' '' '' ''
echo_message " Description - Make the addresses of mmap base, heap, stack and VDSO page randomized.\n" '' '' ''
echo_message " This, among other things, implies that shared libraries will be loaded to random \n" '' '' ''
echo_message " addresses. Also for PIE-linked binaries, the location of code start is randomized.\n\n" '' '' ''
elif sysctl -a 2>/dev/null | grep -q 'kernel.randomize_va_space = 0'; then
echo_message '\033[31mNone (Setting: 0)\033[m\n' '' '' ''
else
echo_message '\033[31mNot supported\033[m\n' '' '' ''
fi
echo_message " See the kernel file 'Documentation/sysctl/kernel.txt' for more details.\n\n" '' '' ''
fi
}
# check cpu nx flag
nxcheck() {
${debug} && echo -e "\n***function nxcheck"
if grep -q nx /proc/cpuinfo; then
echo_message '\033[32mYes\033[m\n\n' '' '' ''
else
echo_message '\033[31mNo\033[m\n\n' '' '' ''
fi
}
#Check core dumps restricted?
coredumpcheck() {
${debug} && echo -e "\n***function coredumpcheck"
coreValue=$(grep -ic "hard core 0" /etc/security/limits.conf)
dumpableValue=$(sysctl -b -e fs.suid_dumpable)
if [[ "${coreValue}" == 1 ]] && [[ "${dumpableValue}" == 0 ]] || [[ "${dumpableValue}" == 2 ]]; then
echo_message '\033[32mRestricted\033[m\n\n' '' '' ''
else
echo_message '\033[31mNot Restricted\033[m\n\n' '' '' ''
fi
}
# check for kernel protection mechanisms
kernelcheck() {
${debug} && echo "***function kernelcheck"
echo_message " Description - List the status of kernel protection mechanisms. Rather than\n" '' '' ''
echo_message " inspect kernel mechanisms that may aid in the prevention of exploitation of\n" '' '' ''
echo_message " userspace processes, this option lists the status of kernel configuration\n" '' '' ''
echo_message " options that harden the kernel itself against attack.\n\n" '' '' ''
echo_message " Kernel config:\n" '' '' '{ "kernel": '
if [[ ! "${1}" == "" ]] ; then
kconfig="cat ${1}"
echo_message " Warning: The config ${1} on disk may not represent running kernel config!\n\n" "${1}" "<kernel config=\"${1}\"" "{ \"KernelConfig\":\"${1}\","
# update the architecture based on the config rather than the system
if ${kconfig} | grep -qi 'CONFIG_ARM=y\|CONFIG_ARM=y'; then
arch="arm"
fi
if ${kconfig} | grep -qi 'CONFIG_ARM64=y'; then
arch="aarch64"
fi
if ${kconfig} | grep -qi 'CONFIG_X86_64=y'; then
arch="64"
fi
if ${kconfig} | grep -qi 'CONFIG_X86_32=y'; then
arch="32"
fi
elif [[ -f /proc/config.gz ]] ; then
kconfig="zcat /proc/config.gz"
echo_message "\033[32m/proc/config.gz\033[m\n\n" '/proc/config.gz' '<kernel config="/proc/config.gz"' '{ "KernelConfig":"/proc/config.gz",'
elif [[ -f /boot/config-"$(uname -r)" ]] ; then
kconfig="cat /boot/config-$(uname -r)"
kern=$(uname -r)
echo_message "\033[33m/boot/config-${kern}\033[m\n\n" "/boot/config-${kern}," "<kernel config='/boot/config-${kern}'" "{ \"KernelConfig\":\"/boot/config-${kern}\","
echo_message " Warning: The config on disk may not represent running kernel config!\n\n" "" "" ""
elif [[ -f "${KBUILD_OUTPUT:-/usr/src/linux}"/.config ]] ; then
kconfig="cat ${KBUILD_OUTPUT:-/usr/src/linux}/.config"
echo_message "\033[33m${KBUILD_OUTPUT:-/usr/src/linux}/.config\033[m\n\n" "${KBUILD_OUTPUT:-/usr/src/linux}/.config," "<kernel config='${KBUILD_OUTPUT:-/usr/src/linux}/.config'" "{ \"KernelConfig\":\"${KBUILD_OUTPUT:-/usr/src/linux}/.config\","
echo_message " Warning: The config on disk may not represent running kernel config!\n\n" "" "" ""
else
echo_message "\033[31mNOT FOUND\033[m\n\n" "NOT FOUND,,,,,,," "<kernel config='not_found' />" '{ "KernelConfig":"not_found",'
exit 0
fi
${debug} && ${kconfig} | grep "CONFIG_GRKERNSEC"
${debug} && ${kconfig} | grep "CONFIG_PAX"
echo_message " Vanilla Kernel ASLR: " "" "" ""
randomize_va=$(sysctl -b -e kernel.randomize_va_space)
if [[ "x${randomize_va}" == "x2" ]]; then
echo_message "\033[32mFull\033[m\n" "Full," " randomize_va_space='full'" '"randomize_va_space":"full",'
elif [[ "x${randomize_va}" == "x1" ]]; then
echo_message "\033[33mPartial\033[m\n" "Partial," " randomize_va_space='partial'" '"randomize_va_space":"partial",'
else
echo_message "\033[31mNone\033[m\n" "None," " randomize_va_space='none'" '"randomize_va_space":"none",'
fi
echo_message " Protected symlinks: " "" "" ""
symlink=$(sysctl -b -e fs.protected_symlinks)
if [[ "x${symlink}" == "x1" ]]; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " protect_symlinks='yes'" '"protect_symlinks":"yes",'
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " protect_symlinks='no'" '"protect_symlinks":"no",'
fi
echo_message " Protected hardlinks: " "" "" ""
hardlink=$(sysctl -b -e fs.protected_hardlinks)
if [[ "x${hardlink}" == "x1" ]]; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " protect_hardlinks='yes'" '"protect_hardlinks":"yes",'
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " protect_hardlinks='no'" '"protect_hardlinks":"no",'
fi
echo_message " Ipv4 reverse path filtering: " "" "" ""
ipv4_rpath=$(sysctl -b -e net.ipv4.conf.all.rp_filter)
if [[ "x${ipv4_rpath}" == "x1" ]]; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " ipv4_rpath='yes'" '"ipv4_rpath":"yes",'
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " ipv4_rpath='no'" '"ipv4_rpath":"no",'
fi
# NOTE : Display the reverse path filtering for IPV6 only if the option is build in the kernel (m or y)
if ${kconfig} | grep -qi 'CONFIG_IPV6='; then
echo_message " Ipv6 reverse path filtering: " "" "" ""
ipv6_rpath=$(sysctl -b -e net.ipv6.conf.all.rp_filter)
if [[ "x${ipv6_rpath}" == "x1" ]]; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " ipv6_rpath='yes'" '"ipv6_rpath":"yes",'
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " ipv6_rpath='no'" '"ipv6_rpath":"no",'
fi
fi
echo_message " Kernel heap randomization: " "" "" ""
# NOTE: y means it turns off kernel heap randomization for backwards compatability (libc5)
if ${kconfig} | grep -qi 'CONFIG_COMPAT_BRK=y'; then
echo_message "\033[31mDisabled\033[m\n" "Disabled," " kernel_heap_randomization='no'" '"kernel_heap_randomization":"no",'
else
echo_message "\033[32mEnabled\033[m\n" "Enabled," " kernel_heap_randomization='yes'" '"kernel_heap_randomization":"yes",'
fi
if ${kconfig} | grep -qi 'CONFIG_CC_STACKPROTECTOR' || ${kconfig} | grep -qa 'CONFIG_STACKPROTECTOR'; then
echo_message " GCC stack protector support: " "" "" ""
if ${kconfig} | grep -qi 'CONFIG_CC_STACKPROTECTOR=y' || ${kconfig} | grep -qi 'CONFIG_STACKPROTECTOR=y' ; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " gcc_stack_protector='yes'" '"gcc_stack_protector":"yes",'
if ${kconfig} | grep -qi 'CONFIG_CC_STACKPROTECTOR_STRONG' || ${kconfig} | grep -qi 'CONFIG_STACKPROTECTOR_STRONG'; then
echo_message " GCC stack protector strong: " "" "" ""
if ${kconfig} | grep -qi 'CONFIG_CC_STACKPROTECTOR_STRONG=y' || ${kconfig} | grep -qi 'CONFIG_STACKPROTECTOR_STRONG=y'; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " gcc_stack_protector_strong='yes'" '"gcc_stack_protector_strong":"yes",'
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " gcc_stack_protector_strong='no'" '"gcc_stack_protector_strong":"no",'
fi
fi
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " gcc_stack_protector='no'" '"gcc_stack_protector":"no",'
fi
fi
if ${kconfig} | grep -qi 'CONFIG_GCC_PLUGIN_STRUCTLEAK'; then
echo_message " GCC structleak plugin: " "" "" ""
if ${kconfig} | grep -qi 'CONFIG_GCC_PLUGIN_STRUCTLEAK=y'; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " gcc_structleak='yes'" '"gcc_structleak":"yes",'
echo_message " GCC structleak by ref plugin: " "" "" ""
if ${kconfig} | grep -qi 'CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL=y'; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " gcc_structleak_byref='yes'" '"gcc_structleak_byref":"yes",'
else
echo_message "\033[32mEnabled\033[m\n" "Enabled," " gcc_structleak_byref='no'" '"gcc_structleak_byref":"no",'
fi
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " gcc_structleak='no'" '"gcc_structleak":"no",'
fi
fi
if ${kconfig} | grep -qi 'CONFIG_SLAB_FREELIST_RANDOM'; then
echo_message " SLAB freelist randomization: " "" "" ""
if ${kconfig} | grep -qi 'CONFIG_SLAB_FREELIST_RANDOM=y'; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " slab_freelist_randomization='yes'" '"slab_freelist_randomization":"yes",'
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " slab_freelist_randomization='no'" '"slab_freelist_randomization":"no",'
fi
fi
if ${kconfig} | grep -qi 'CPU_SW_DOMAIN_PAN=y'; then
echo_message " Use CPU domains: " "" "" ""
if ${kconfig} | grep -qi 'CPU_SW_DOMAIN_PAN=y'; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " cpu_sw_domain'yes'" '"cpu_sw_domain":"yes",'
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " cpu_sw_domain='no'" '"cpu_sw_domain":"no",'
fi
fi
if ${kconfig} | grep -qi 'CONFIG_VMAP_STACK'; then
echo_message " Virtually-mapped kernel stack: " "" "" ""
if ${kconfig} | grep -qi 'CONFIG_VMAP_STACK=y'; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " virtually_mapped_stack='yes'" '"virtually_mapped_stack":"yes",'
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " virtually_mapped_stack='no'" '"virtually_mapped_stack":"no",'
fi
fi
if ${kconfig} | grep -qi 'CONFIG_DEVMEM'; then
if ${kconfig} | grep -qi 'CONFIG_DEVMEM=y'; then
echo_message " Restrict /dev/mem access: " "" "" ""
if ${kconfig} | grep -qi 'CONFIG_STRICT_DEVMEM=y'; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " restrict_dev_mem_access='yes'" '"restrict_dev_mem_access":"yes",'
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " restrict_dev_mem_access='no'" '"restrict_dev_mem_access":"no",'
fi
echo_message " Restrict I/O access to /dev/mem: " "" "" ""
if ${kconfig} | grep -qi 'CONFIG_IO_STRICT_DEVMEM=y'; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " restrict_io_dev_mem_access='yes'" '"restrict_io_dev_mem_access":"yes",'
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " restrict_io_dev_mem_access='no'" '"restrict_io_dev_mem_access":"no",'
fi
fi
fi
if ! ${kconfig} | grep -qi 'CONFIG_PAX'; then
if ${kconfig} | grep -qi 'CONFIG_DEBUG_RODATA' || ${kconfig} | grep -qi '|CONFIG_STRICT_KERNEL_RWX'; then
echo_message " Enforce read-only kernel data: " "" "" ""
if ${kconfig} | grep -qi 'CONFIG_DEBUG_RODATA=y\|CONFIG_STRICT_KERNEL_RWX=y'; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " ro_kernel_data='yes'" '"ro_kernel_data":"yes",'
echo_message " Enforce read-only module data: " "" "" ""
if ${kconfig} | grep -qi 'CONFIG_STRICT_MODULE_RWX=y\|CONFIG_DEBUG_SET_MODULE_RONX'; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " ro_module_data='yes'" '"ro_module_data":"yes",'
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " ro_module_data='no'" '"ro_module_data":"no",'
fi
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " ro_kernel_data='no'" '"ro_kernel_data":"no",'
fi
fi
fi
if ${kconfig} | grep -qi 'CONFIG_REFCOUNT_FULL'; then
echo_message " Full reference count validation: " "" "" ""
if ${kconfig} | grep -qi 'CONFIG_REFCOUNT_FULL=y'; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " full_refcount_validation='yes'" '"full_refcount_validation":"yes",'
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " full_refcount_validation='no'" '"full_refcount_validation":"no",'
fi
fi
echo_message " Exec Shield: " """" ""
if grep -qi 'kernel.exec-shield = 1' /etc/sysctl.conf 2>/dev/null ; then
echo_message '\033[32mEnabled\033[m\n\n' '' '' ''
else
echo_message '\033[31mDisabled\033[m\n\n' '' '' ''
fi
if ${kconfig} | grep -qi 'CONFIG_HARDENED_USERCOPY'; then
echo_message " Hardened Usercopy: " "" "" ""
if ${kconfig} | grep -qi 'CONFIG_HARDENED_USERCOPY=y'; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " hardened_usercopy='yes'" '"hardened_usercopy":"yes",'
echo_message " Hardened Usercopy Pagespan: " "" "" ""
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " hardened_usercopy='no'" '"hardened_usercopy":"no",'
fi
fi
if ${kconfig} | grep -qi 'CONFIG_FORTIFY_SOURCE'; then
echo_message " Harden str/mem functions: " "" "" ""
if ${kconfig} | grep -qi 'CONFIG_FORTIFY_SOURCE=y'; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " fortify_source='yes'" '"fortify_source":"yes",'
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " fortify_source='no'" '"fortify_source":"no",'
fi
fi
if ${kconfig} | grep -qi 'CONFIG_DEVKMEM'; then
echo_message " Restrict /dev/kmem access: " "" "" ""
if ${kconfig} | grep -qi 'CONFIG_DEVKMEM=y'; then
echo_message "\033[31mDisabled\033[m\n" "Disabled" " restrict_dev_kmem_access='no'" '"restrict_dev_kmem_access":"no",'
else
echo_message "\033[32mEnabled\033[m\n" "Enabled" " restrict_dev_kmem_access='yes'" '"restrict_dev_kmem_access":"yes",'
fi
fi
#x86 only
if [[ "${arch}" == "32" ]] || [[ "${arch}" == "64" ]]; then
echo_message "\n" "\n" "" ""
echo_message "* X86 only: \n" "" "" ""
if ! ${kconfig} | grep -qi 'CONFIG_PAX_SIZE_OVERFLOW=y'; then
if ${kconfig} | grep -qi 'CONFIG_DEBUG_STRICT_USER_COPY_CHECKS'; then
echo_message " Strict user copy checks: " "" "" ""
if ${kconfig} | grep -qi 'CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y'; then
echo_message "\033[32mEnabled\033[m\n" "Enabled," " strict_user_copy_check='yes'" '"strict_user_copy_check":"yes",'
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " strict_user_copy_check='no'" '"strict_user_copy_check":"no",'
fi
fi
fi
if ${kconfig} | grep -qi 'CONFIG_RANDOMIZE_BASE' || ${kconfig} | grep -qi 'CONFIG_PAX_ASLR'; then
echo_message " Address space layout randomization: " "" "" ""
if ${kconfig} | grep -qi 'CONFIG_RANDOMIZE_BASE=y' || ${kconfig} | grep -qi 'CONFIG_PAX_ASLR=y'; then
echo_message "\033[32mEnabled\033[m\n" "Enabled" " random_address_space_layout='yes'>" '"random_address_space_layout":"yes"'
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " random_address_space_layout='no'>" '"random_address_space_layout":"no"'
fi
fi
fi
#ARM only
if [[ "${arch}" == "arm" ]]; then
echo_message "\n" "\n" "\n" ""
echo_message "* ARM only: \n" "" "" ""
if ${kconfig} | grep -qi 'CONFIG_ARM_KERNMEM_PERMS'; then
echo_message " Restrict kernel memory permissions: " "" "" ""
if ${kconfig} | grep -qi 'CONFIG_ARM_KERNMEM_PERMS=y'; then
echo_message "\033[32mEnabled\033[m\n" "Enabled" " arm_kernmem_perms='yes'>" '"arm_kernmem_perms":"yes",'
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " arm_kernmem_perms='no'>" '"arm_kernmem_perms":"no",'
fi
fi
if ${kconfig} | grep -qi 'CONFIG_DEBUG_ALIGN_RODATA'; then
echo_message " Make rodata strictly non-excutable: " "" "" ""
if ${kconfig} | grep -qi 'CONFIG_DEBUG_ALIGN_RODATA=y'; then
echo_message "\033[32mEnabled\033[m\n" "Enabled" " arm_strict_rodata='yes'>" '"arm_strict_rodata":"yes",'
else
echo_message "\033[31mDisabled\033[m\n" "Disabled," " arm_strict_rodata='no'>" '"arm_strict_rodata":"no",'
fi
fi