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