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|
#!/bin/sh
# rpm-chksec
#
# Copyright (c) 2011-2013 Steve Grubb. ALL RIGHTS RESERVED.
# sgrubb@redhat.com
#
# This software may be freely redistributed under the terms of the GNU
# public license.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
# Given an rpm, it will look at each file to check that its compiled with
# the intended flags to make it more secure. Things that are green are OK.
# Anything in yellow could be better but is passable. Anything in red needs
# attention.
#
# If the --all option is given, it will generate a list of rpms and then
# summarize the rpm's state. For yes, then all files are in the expected
# state. Just one file not compiled with the right flags can turn the
# answer to no. Re-run passing that package (instead of --all) for the details.
#
# To save to file: ./rpm-chksec | sed -r "s/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]//g" | tee output.txt
VERSION="0.5.2"
usage () {
echo "rpm-chksec [--version|--all|<rpmname>...]"
if [ ! -x /usr/bin/filecap ] ; then
echo "You need to install libcap-ng-utils to test capabilities"
fi
if [ $EUID != 0 ] ; then
echo "You might need to be root to read some files"
fi
exit 0
}
if [ "$1" = "--help" -o $# -eq 0 ] ; then
usage
fi
if [ "$1" = "--version" ] ; then
echo "rpm-chksec $VERSION"
exit 0
fi
if [ "$1" = "--all" ] ; then
MODE="all"
else
MODE="single"
fi
do_one () {
if ! rpm -q $1 >/dev/null 2>&1 ; then
if [ "$MODE" = "single" ] ; then
echo "$1 is not installed"
exit 1
else
echo "not installed"
return
fi
fi
files=`rpm -ql $1`
# Look for daemons, need this for later...
DAEMON=""
for f in $files
do
if [ ! -f "$f" ] ; then
continue
fi
if [ `echo "$f" | grep '\/etc\/rc.d\/init.d'` ] ; then
n=`basename "$f"`
t=`which "$n" 2>/dev/null`
if [ x"$t" != "x" ] ; then
DAEMON="$DAEMON $t"
continue
fi
t=`which "$n"d 2>/dev/null`
if [ x"$t" != "x" ] ; then
DAEMON="$DAEMON $t"
continue
fi
t=`cat "$f" 2>/dev/null | grep 'bin' | grep 'exit 5' | grep -v '\$'`
if [ x"$t" != "x" ] ; then
DAEMON="$DAEMON $t"
continue
fi
if [ "$MODE" = "single" ] ; then
echo "Can't find the executable in $f but daemon rules would apply"
fi
elif [ `echo "$f" | grep '\/lib\/systemd\/'` ] ; then
t=`cat "$f" | grep -i '^ExecStart=' | tr '=' ' ' | awk '{ print $2 }'`
if [ x"$t" != "x" ] ; then
DAEMON="$DAEMON $t"
continue
fi
fi
done
# Prevent garbled output when doing --all.
skip_current=0
for f in $files
do
if [ ! -f "$f" ] ; then
continue
fi
# Some packages have files with ~ in them. This avoids it.
if ! echo "$f" | grep '^/' >/dev/null ; then
continue
fi
if [ ! -r "$f" ] && [ $EUID != 0 ] ; then
if [ $MODE = "single" ] ; then
echo "Please re-test $f as the root user"
else
# Don't print results.
skip_current=1
echo "Please re-test $1 as the root user"
fi
continue
fi
if ! file "$f" | grep -qw 'ELF'; then
continue
fi
RELRO="no"
if readelf -l "$f" 2>/dev/null | grep -q 'GNU_RELRO'; then
RELRO="partial"
fi
if readelf -d "$f" 2>/dev/null | grep -q 'BIND_NOW'; then
RELRO="full"
fi
PIE="no"
if readelf -h "$f" 2>/dev/null | grep -q 'Type:[[:space:]]*DYN'; then
PIE="DSO"
if readelf -d "$f" 2>/dev/null | grep -q '(DEBUG)'; then
PIE="yes"
fi
fi
APP=""
if [ x"$DAEMON" != "x" ] ; then
for d in $DAEMON
do
if [ "$f" = "$d" ] ; then
APP="daemon"
break
fi
done
fi
if [ x"$APP" = "x" ] ; then
# See if this is a library or a setuid app
if [ `echo "$f" | grep '\/lib' | grep '\.so'` ] ; then
APP="library"
elif [ `find "$f" -perm -004000 -type f -print` ] ; then
APP="setuid"
elif [ `find "$f" -perm -002000 -type f -print` ] ; then
APP="setgid"
elif [ -x /usr/bin/filecap ] && [ `filecap "$f" 2> /dev/null | wc -w` -gt 0 ] ; then
APP="setcap"
else
syms1=`/usr/bin/readelf -s "$f" 2>/dev/null | egrep ' connect@.*GLIBC| listen@.*GLIBC| accept@.*GLIBC|accept4@.*GLIBC'`
syms2=`/usr/bin/readelf -s "$f" 2>/dev/null | egrep ' getaddrinfo@.*GLIBC| getnameinfo@.*GLIBC| getservent@.*GLIBC| getservbyname@.*GLIBC| getservbyport@.*GLIBC|gethostbyname@.*GLIBC| gethostbyname2@.*GLIBC| gethostbyaddr@.*GLIBC| gethostbyaddr2@.*GLIBC'`
if [ x"$syms1" != "x" ] ; then
if [ x"$syms2" != "x" ] ; then
APP="network-ip"
else
APP="network-local"
fi
fi
fi
fi
if [ x"$APP" = "x" ] ; then
APP="exec"
fi
# OK, ready for the output
if [ "$MODE" = "single" ] ; then
printf "%-56s %-10s " "$f" $APP
if [ "$APP" = "daemon" -o "$APP" = "setuid" -o "$APP" = "setgid" -o "$APP" = "setcap" -o "$APP" = "network-ip" -o "$APP" = "network-local" ] ; then
if [ "$RELRO" = "full" ] ; then
printf "\033[32m%-7s\033[m " $RELRO
elif [ "$RELRO" = "partial" ] ; then
printf "\033[33m%-7s\033[m " $RELRO
else
printf "\033[31m%-7s\033[m " $RELRO
fi
if [ "$PIE" = "yes" ] ; then
printf "\033[32m%-4s\033[m" $PIE
else
printf "\033[31m%-4s\033[m" $PIE
fi
elif [ "$APP" = "library" ] ; then
if [ "$RELRO" = "full" -o "$RELRO" = "partial" ] ; then
printf "\033[32m%-7s\033[m " $RELRO
else
printf "\033[31m%-7s\033[m " $RELRO
fi
printf "\033[32m%-4s\033[m" $PIE
else
# $APP = exec - we want partial relro
if [ "$RELRO" = "no" ] ; then
printf "\033[31m%-7s\033[m " $RELRO
else
printf "\033[32m%-7s\033[m " $RELRO
fi
printf "\033[32m%-4s\033[m" $PIE
fi
echo
else
if [ "$APP" = "daemon" -o "$APP" = "setuid" -o "$APP" = "setgid" -o "$APP" = "setcap" -o "$APP" = "network-ip" -o "$APP" = "network-local" ] ; then
if [ "$RELRO" = "no" ] ; then
RELRO_SUM="no"
APP_SUM="$APP"
fi
if [ "$PIE" = "no" ] ; then
PIE_SUM="no"
APP_SUM="$APP"
fi
elif [ "$APP" = "library" ] ; then
if [ "$RELRO" = "no" ] ; then
RELRO_SUM="no"
APP_SUM="$APP"
fi
# $APP = exec - must have partial or full relro
elif [ "$RELRO" = "no" ] ; then
RELRO_SUM="no"
APP_SUM="$APP"
fi
fi
done
}
if [ "$MODE" = "single" ] ; then
printf "%-56s %-10s %-7s %-4s" "FILE" "TYPE" "RELRO" "PIE"
echo
for i; do
f=$(basename $1)
# Strip the .rpm extension, if present.
do_one ${f%%.rpm}
shift
done
exit 0
fi
# Skip the kernel as its special
packages=`rpm -qa --queryformat "%{NAME}.%{ARCH}\n" | egrep -v 'kernel.|debuginfo.|.noarch|gpg-pubkey' | sort`
printf "%-50s %-5s %-4s %-14s" "PACKAGE" "RELRO" "PIE" "CLASS"
echo
for p in $packages
do
RELRO_SUM="yes"
PIE_SUM="yes"
APP_SUM=""
printf "%-50s " $p
do_one $p
if [[ $skip_current -eq 1 ]] ; then
continue
fi
if [ "$RELRO_SUM" = "yes" ] ; then
printf "\033[32m%-5s\033[m " "$RELRO_SUM"
else
printf "\033[31m%-5s\033[m " "$RELRO_SUM"
fi
if [ "$PIE_SUM" = "yes" ] ; then
printf "\033[32m%-4s\033[m" "$PIE_SUM"
if [ "$RELRO_SUM" = "no" ] ; then
printf " %-14s" "$APP_SUM"
fi
else
if [ "$APP_SUM" = "network-local" ] ; then
printf "\033[33m%-4s\033[m %-14s" "$PIE_SUM" "$APP_SUM"
else
printf "\033[31m%-4s\033[m %-14s" "$PIE_SUM" "$APP_SUM"
fi
fi
echo
done
exit 0
|
