#!/bin/sh - # # $NetBSD: security,v 1.129.2.1 2023/08/11 14:35:25 martin Exp $ # from: @(#)security 8.1 (Berkeley) 6/9/93 # PATH=/sbin:/usr/sbin:/bin:/usr/bin rcvar_manpage='security.conf(5)' if [ -f /etc/rc.subr ]; then . /etc/rc.subr else echo "Can't read /etc/rc.subr; aborting." exit 1; fi umask 077 TZ=UTC; export TZ if [ -s /etc/security.conf ]; then . /etc/security.conf fi if [ -s /etc/pkgpath.conf ]; then . /etc/pkgpath.conf fi # Set reasonable defaults (if they're not set in security.conf) # backup_dir=${backup_dir:-/var/backups} max_loginlen=${max_loginlen:-8} max_grouplen=${max_grouplen:-8} pkg_admin=${pkg_admin:-/usr/sbin/pkg_admin} pkg_info=${pkg_info:-/usr/sbin/pkg_info} # Other configurable variables # special_files="/etc/mtree/special /etc/mtree/special.local" MP=/etc/master.passwd CHANGELIST="" work_dir=$backup_dir/work if [ ! -d "$work_dir" ]; then mkdir -p "$work_dir" fi SECUREDIR=$(mktemp -d -t _securedir) || exit 1 trap "/bin/rm -rf $SECUREDIR ; exit 0" EXIT INT QUIT PIPE if ! cd "$SECUREDIR"; then echo "Can not cd to $SECUREDIR". exit 1 fi ERR=err.$$ TMP1=tmp1.$$ TMP2=tmp2.$$ MPBYUID=mpbyuid.$$ MPBYPATH=mpbypath.$$ LIST=list.$$ OUTPUT=output.$$ LABELS=labels.$$ LVM_LABELS=lvm.$$ PKGS=pkgs.$$ CHANGEFILES=changefiles.$$ SPECIALSPEC=specialspec.$$ if [ -n "${pkgdb_dir}" ]; then echo "WARNING: Setting pkgdb_dir in security.conf(5) is deprecated" echo "WARNING: Please define PKG_DBDIR in pkg_install.conf(5) instead" _compat_K_flag="-K ${pkgdb_dir}" fi have_pkgs() { $pkg_info ${_compat_K_flag} -q -E '*' } # migrate_file old new # Determine if the "${old}" path name needs to be migrated to the # "${new}" path. Also checks if "${old}.current" needs migrating, # and if so, migrate it and possibly "${old}.current,v" and # "${old}.backup". # migrate_file() { _old=$1 _new=$2 if [ -z "$_old" ] || [ -z "$_new" ]; then err 3 "USAGE: migrate_file old new" fi if [ ! -d "${_new%/*}" ]; then mkdir -p "${_new%/*}" fi if [ -f "${_old}" ] && ! [ -f "${_new}" ]; then echo "==> migrating ${_old}" echo " to ${_new}" mv "${_old}" "${_new}" fi if [ -f "${_old}.current" ] && ! [ -f "${_new}.current" ]; then echo "==> migrating ${_old}.current" echo " to ${_new}.current" mv "${_old}.current" "${_new}.current" if [ -f "${_old}.current,v" ] && ! [ -f "${_new}.current,v" ]; then echo "==> migrating ${_old}.current,v" echo " to ${_new}.current,v" mv "${_old}.current,v" "${_new}.current,v" fi if [ -f "${_old}.backup" ] && ! [ -f "${_new}.backup" ]; then echo "==> migrating ${_old}.backup" echo " to ${_new}.backup" mv "${_old}.backup" "${_new}.backup" fi fi } # backup_and_diff file printdiff # Determine if file needs backing up, and if so, do it. # If printdiff is yes, display the diffs, otherwise # just print a message saying "[changes omitted]". # backup_and_diff() { _file=$1 _printdiff=$2 if [ -z "$_file" ] || [ -z "$_printdiff" ]; then err 3 "USAGE: backup_and_diff file printdiff" fi ! checkyesno _printdiff _printdiff=$? _old=$backup_dir/${_file##*/} case "$_file" in $work_dir/*) _new=$_file migrate_file "$backup_dir/$_old" "$_new" migrate_file "$_old" "$_new" ;; *) _new=$backup_dir/$_file migrate_file "$_old" "$_new" ;; esac CUR=${_new}.current BACK=${_new}.backup if [ -f $_file ]; then if [ -f $CUR ] ; then if [ "$_printdiff" -ne 0 ]; then diff ${diff_options} $CUR $_file > $OUTPUT else if ! cmp -s $CUR $_file; then echo "[changes omitted]" fi > $OUTPUT fi if [ -s $OUTPUT ] ; then printf \ "\n======\n%s diffs (OLD < > NEW)\n======\n" $_file cat $OUTPUT backup_file update $_file $CUR $BACK fi else printf "\n======\n%s added\n======\n" $_file if [ "$_printdiff" -ne 0 ]; then diff ${diff_options} /dev/null $_file else echo "[changes omitted]" fi backup_file add $_file $CUR $BACK fi else if [ -f $CUR ]; then printf "\n======\n%s removed\n======\n" $_file if [ "$_printdiff" -ne 0 ]; then diff ${diff_options} $CUR /dev/null else echo "[changes omitted]" fi backup_file remove $_file $CUR $BACK fi fi } # These are used several times. # awk -F: '!/^\+/ { print $1 " " $3 }' $MP | sort -k2n > $MPBYUID awk -F: '{ print $1 " " $9 }' $MP | sort -k2 > $MPBYPATH for file in $special_files; do [ -s $file ] && cat $file done | mtree -CM -k all > $SPECIALSPEC || exit 1 # Check for enough entropy. # if checkyesno check_entropy; then if [ "$(sysctl -n kern.entropy.needed)" != 0 ]; then printf '\n' printf 'Entropy:\n' printf 'System may need more entropy for cryptography.\n' printf 'See the entropy(7) man page for details.\n' fi fi # Check the master password file syntax. # if checkyesno check_passwd; then # XXX: the sense of permit_star is reversed; the code works as # implemented, but usage needs to be negated. checkyesno check_passwd_permit_star && permit_star=0 || permit_star=1 checkyesno check_passwd_permit_nonalpha \ && permit_nonalpha=1 || permit_nonalpha=0 awk -v "len=$max_loginlen" \ -v "nowarn_shells_list=$check_passwd_nowarn_shells" \ -v "nowarn_users_list=$check_passwd_nowarn_users" \ -v "permit_star=$permit_star" \ -v "permit_nonalpha=$permit_nonalpha" \ ' BEGIN { while ( getline < "/etc/shells" > 0 ) { if ($0 ~ /^\#/ || $0 ~ /^$/ ) continue; shells[$1]++; } split(nowarn_shells_list, a); for (i in a) nowarn_shells[a[i]]++; split(nowarn_users_list, a); for (i in a) nowarn_users[a[i]]++; uid0_users_list="root toor" split(uid0_users_list, a); for (i in a) uid0_users[a[i]]++; FS=":"; } { if ($0 ~ /^[ ]*$/) { printf "Line %d is a blank line.\n", NR; next; } # NIS compat entry? compatline = $1 ~ "^[\\+-]"; if (compatline) { if ($1 == "+" && NF == 1) { next; } sub("^.", "", $1); } if (NF != 10) printf "Line %d has the wrong number of fields.\n", NR; if (compatline) { if ($3 == 0) printf "Line %d includes entries with uid 0.\n", NR; if ($1 == "") next; } if (!permit_nonalpha && $1 !~ /^[_A-Za-z0-9]([-A-Za-z0-9_.]*[A-Za-z0-9])*$/) printf "Login %s has non-alphanumeric characters.\n", $1; if (length($1) > len) printf "Login %s has more than "len" characters.\n", $1; if ($2 == "" && !compatline && !nowarn_users[$1]) printf "Login %s has no password.\n", $1; if (!nowarn_shells[$10] && !nowarn_users[$1]) { if (length($2) != 13 && length($2) != 20 && $2 !~ /^\$1/ && $2 !~ /^\$2/ && $2 !~ /^\$sha1/ && $2 !~ /^\$argon2(i|d|id)/ && $2 != "" && (permit_star || $2 != "*") && $2 !~ /^\*[A-z-]+$/ && $1 != "toor") { if ($10 == "" || shells[$10]) printf "Login %s is off but still has "\ "a valid shell (%s)\n", $1, $10; } else if (compatline && $10 == "") { # nothing } else if (! shells[$10]) printf "Login %s does not have a valid "\ "shell (%s)\n", $1, $10; } if ($3 == 0 && !uid0_users[$1] && !nowarn_users[$1]) printf "Login %s has a user id of 0.\n", $1; if ($3 != "" && $3 < 0) printf "Login %s has a negative user id.\n", $1; if ($4 != "" && $4 < 0) printf "Login %s has a negative group id.\n", $1; }' < $MP > $OUTPUT if [ -s $OUTPUT ] ; then printf "\nChecking the $MP file:\n" cat $OUTPUT fi awk -F: '{ print $1 }' $MP | sort | uniq -d > $OUTPUT if [ -s $OUTPUT ] ; then printf "\n$MP has duplicate user names.\n" column $OUTPUT fi awk -v "permit_dups_list=$check_passwd_permit_dups" \ ' BEGIN { split(permit_dups_list, a); for (i in a) permit_dups[a[i]]++; } { if (!permit_dups[$1]) print $2; }' < $MPBYUID | uniq -d > $TMP2 if [ -s $TMP2 ] ; then printf "\n$MP has duplicate user ids.\n" while read uid; do grep -w $uid $MPBYUID done < $TMP2 | column fi fi # Check the group file syntax. # if checkyesno check_group; then GRP=/etc/group awk -F: -v "len=$max_grouplen" '{ if ($0 ~ /^[ ]*$/) { printf "Line %d is a blank line.\n", NR; next; } if (NF != 4 && ($1 != "+" || NF != 1)) printf "Line %d has the wrong number of fields.\n", NR; if ($1 == "+" ) { next; } if ($1 !~ /^[_A-Za-z0-9]([-A-Za-z0-9_.]*[A-Za-z0-9])*$/) printf "Group %s has non-alphanumeric characters.\n", $1; if (length($1) > len) printf "Group %s has more than "len" characters.\n", $1; if ($3 !~ /[0-9]*/) printf "Login %s has a negative group id.\n", $1; }' < $GRP > $OUTPUT if [ -s $OUTPUT ] ; then printf "\nChecking the $GRP file:\n" cat $OUTPUT fi awk -F: '{ print $1 }' $GRP | sort | uniq -d > $OUTPUT dupgroups="" for group in $(cat $OUTPUT) ; do gcount=$(awk -F: "/$group/ { print \$1,\$3 }" $GRP | sort -u | wc -l) if [ $gcount -gt 1 ]; then dupgroups="$dupgroups $group" fi done if [ ! -z $dupgroups ] ; then printf "\n$GRP has duplicate group names.\n" printf "$dupgroups\n" fi fi # Check for root paths, umask values in startup files. # The check for the root paths is problematical -- it's likely to fail # in other environments. Once the shells have been modified to warn # of '.' in the path, the path tests should go away. # if checkyesno check_rootdotfiles; then rhome=~root umaskset=no list="/etc/csh.cshrc /etc/csh.login ${rhome}/.cshrc ${rhome}/.login" for i in $list ; do if [ -f $i ] ; then if egrep '^[ \t]*umask[ \t]+[0-7]+' $i > /dev/null ; then umaskset=yes fi # Double check the umask value itself; ensure that # both the group and other write bits are set. # egrep '^[ \t]*umask[ \t]+[0-7]+' $i | awk '{ if ($2 ~ /^.$/ || $2 ~! /[^2367].$/) { print "\tRoot umask is group writable" } if ($2 ~ /[^2367]$/) { print "\tRoot umask is other writable" } }' | sort -u SAVE_PATH=$PATH unset PATH /bin/csh -f -s << end-of-csh > /dev/null 2>&1 source $i /bin/ls -ldgT \$path > $TMP1 end-of-csh export PATH=$SAVE_PATH awk '{ if ($10 ~ /^\.$/) { print "\tThe root path includes ."; next; } } $1 ~ /^d....w/ \ { print "\tRoot path directory " $10 " is group writable." } \ $1 ~ /^d.......w/ \ { print "\tRoot path directory " $10 " is other writable." }' \ < $TMP1 fi done > $OUTPUT if [ $umaskset = no ] || [ -s $OUTPUT ] ; then printf "\nChecking root csh paths, umask values:\n$list\n\n" if [ -s $OUTPUT ]; then cat $OUTPUT fi if [ $umaskset = no ] ; then printf "\tRoot csh startup files do not set the umask.\n" fi fi umaskset=no list="/etc/profile ${rhome}/.profile" for i in $list; do if [ -f $i ] ; then if egrep umask $i > /dev/null ; then umaskset=yes fi egrep umask $i | awk '$2 ~ /^.$/ || $2 ~ /[^2367].$/ \ { print "\tRoot umask is group writable" } \ $2 ~ /[^2367]$/ \ { print "\tRoot umask is other writable" }' SAVE_PATH=$PATH unset PATH /bin/sh << end-of-sh > /dev/null 2>&1 . $i list=\$(echo \$PATH | /usr/bin/sed -e \ 's/^:/.:/;s/:$/:./;s/::/:.:/g;s/:/ /g') /bin/ls -ldgT \$list > $TMP1 end-of-sh export PATH=$SAVE_PATH awk '{ if ($10 ~ /^\.$/) { print "\tThe root path includes ."; next; } } $1 ~ /^d....w/ \ { print "\tRoot path directory " $10 " is group writable." } \ $1 ~ /^d.......w/ \ { print "\tRoot path directory " $10 " is other writable." }' \ < $TMP1 fi done > $OUTPUT if [ $umaskset = no ] || [ -s $OUTPUT ] ; then printf "\nChecking root sh paths, umask values:\n$list\n" if [ -s $OUTPUT ]; then cat $OUTPUT fi if [ $umaskset = no ] ; then printf "\tRoot sh startup files do not set the umask.\n" fi fi fi # Root and uucp should both be in /etc/ftpusers. # if checkyesno check_ftpusers; then list="uucp "$(awk '$2 == 0 { print $1 }' $MPBYUID) for i in $list; do if /usr/libexec/ftpd -C $i ; then printf "\t$i is not denied\n" fi done > $OUTPUT if [ -s $OUTPUT ]; then printf "\nChecking the /etc/ftpusers configuration:\n" cat $OUTPUT fi fi # Uudecode should not be in the /etc/mail/aliases file. # if checkyesno check_aliases; then for f in /etc/mail/aliases /etc/aliases; do if [ -f $f ] && egrep '^[^#]*(uudecode|decode).*\|' $f; then printf "\nEntry for uudecode in $f file.\n" fi done fi # Files that should not have + signs. # if checkyesno check_rhosts; then list="/etc/hosts.equiv /etc/hosts.lpd" for f in $list ; do if [ -f $f ] && egrep '\+' $f > /dev/null ; then printf "\nPlus sign in $f file.\n" fi done # Check for special users with .rhosts files. Only root and toor should # have .rhosts files. Also, .rhosts files should not have plus signs. awk -F: '$1 != "root" && $1 != "toor" && \ ($3 < 100 || $1 == "ftp" || $1 == "uucp") \ { print $1 " " $9 }' $MP | sort -k2 | while read uid homedir; do if [ -f ${homedir}/.rhosts ] ; then rhost=$(ls -ldgT ${homedir}/.rhosts) printf -- "$uid: $rhost\n" fi done > $OUTPUT if [ -s $OUTPUT ] ; then printf "\nChecking for special users with .rhosts files.\n" cat $OUTPUT fi while read uid homedir; do if [ -f ${homedir}/.rhosts ] && [ -r ${homedir}/.rhosts ] && cat -f ${homedir}/.rhosts | egrep '\+' > /dev/null then printf -- "$uid: + in .rhosts file.\n" fi done < $MPBYPATH > $OUTPUT if [ -s $OUTPUT ] ; then printf "\nChecking .rhosts files syntax.\n" cat $OUTPUT fi fi # Check home directories. Directories should not be owned by someone else # or writable. # if checkyesno check_homes; then checkyesno check_homes_permit_usergroups && \ permit_usergroups=1 || permit_usergroups=0 while read uid homedir; do if [ -d ${homedir}/ ] ; then file=$(ls -ldgT ${homedir}) printf -- "$uid $file\n" fi done < $MPBYPATH | awk -v "usergroups=$permit_usergroups" \ -v "permit_owners_list=$check_homes_permit_other_owner" ' BEGIN { split(permit_owners_list, a); for (i in a) permit_owners[a[i]]++; } $1 != $4 && $4 != "root" && !permit_owners[$1] \ { print "user " $1 " home directory is owned by " $4 } $2 ~ /^d....w/ && (!usergroups || $5 != $1) \ { print "user " $1 " home directory is group writable" } $2 ~ /^d.......w/ \ { print "user " $1 " home directory is other writable" }' \ > $OUTPUT if [ -s $OUTPUT ] ; then printf "\nChecking home directories.\n" cat $OUTPUT fi # Files that should not be owned by someone else or readable. list=".Xauthority .netrc .ssh/id_dsa .ssh/id_rsa .ssh/identity" while read uid homedir; do for f in $list ; do file=${homedir}/${f} if [ -f $file ] ; then printf -- "$uid $f $(ls -ldgT $file)\n" fi done done < $MPBYPATH | awk -v "usergroups=$permit_usergroups" \ -v "permit_owners_list=$check_homes_permit_other_owner" ' BEGIN { split(permit_owners_list, a); for (i in a) permit_owners[a[i]]++; } $1 != $5 && $5 != "root" && !permit_owners[$1] \ { print "user " $1 " " $2 " file is owned by " $5 } $3 ~ /^-...r/ && (!usergroups || $6 != $1) \ { print "user " $1 " " $2 " file is group readable" } $3 ~ /^-......r/ \ { print "user " $1 " " $2 " file is other readable" } $3 ~ /^-....w/ && (!usergroups || $6 != $1) \ { print "user " $1 " " $2 " file is group writable" } $3 ~ /^-.......w/ \ { print "user " $1 " " $2 " file is other writable" }' \ > $OUTPUT # Files that should not be owned by someone else or writable. list=".bash_history .bash_login .bash_logout .bash_profile .bashrc \ .cshrc .emacs .exrc .forward .history .k5login .klogin .login \ .logout .profile .qmail .rc_history .rhosts .shosts ssh .tcshrc \ .twmrc .xinitrc .xsession .ssh/authorized_keys \ .ssh/authorized_keys2 .ssh/config .ssh/id_dsa.pub \ .ssh/id_rsa.pub .ssh/identity.pub .ssh/known_hosts \ .ssh/known_hosts2" while read uid homedir; do for f in $list ; do file=${homedir}/${f} if [ -f $file ] ; then printf -- "$uid $f $(ls -ldgT $file)\n" fi done done < $MPBYPATH | awk -v "usergroups=$permit_usergroups" \ -v "permit_owners_list=$check_homes_permit_other_owner" ' BEGIN { split(permit_owners_list, a); for (i in a) permit_owners[a[i]]++; } $1 != $5 && $5 != "root" && !permit_owners[$1] \ { print "user " $1 " " $2 " file is owned by " $5 } $3 ~ /^-....w/ && (!usergroups || $6 != $1) \ { print "user " $1 " " $2 " file is group writable" } $3 ~ /^-.......w/ \ { print "user " $1 " " $2 " file is other writable" }' \ >> $OUTPUT if [ -s $OUTPUT ] ; then printf "\nChecking dot files.\n" cat $OUTPUT fi fi # Mailboxes should be owned by user and unreadable. # if checkyesno check_varmail; then ls -lA /var/mail | \ awk ' NR == 1 { next; } $9 ~ /^\./ {next; } $3 != $9 { print "user " $9 " mailbox is owned by " $3 } $1 != "-rw-------" { print "user " $9 " mailbox is " $1 ", group " $4 }' > $OUTPUT if [ -s $OUTPUT ] ; then printf "\nChecking mailbox ownership.\n" cat $OUTPUT fi fi # NFS exports shouldn't be globally exported # if checkyesno check_nfs && [ -f /etc/exports ]; then awk '{ # ignore comments and blank lines if ($0 ~ /^\#/ || $0 ~ /^$/ ) next; # manage line continuation while ($NF ~ /^\\$/) { $NF = ""; line = $0 ""; getline; $0 = line $0 ""; } delete dir; readonly = ndir = 0; for (i = 1; i <= NF; ++i) { if ($i ~ /^\//) dir[ndir++] = $i; else if ($i ~ /^-/) { if ($i ~ /^-(ro|o)$/) readonly = 1; if ($i ~ /^-network/) next; } else next; } if (readonly) for (item in dir) rodir[nrodir++] = dir[item]; else for (item in dir) rwdir[nrwdir++] = dir[item]; } END { if (nrodir) { printf("Globally exported file system%s, read-only:\n", nrodir > 1 ? "s" : ""); for (item in rodir) printf("\t%s\n", rodir[item]); } if (nrwdir) { printf("Globally exported file system%s, read-write:\n", nrwdir > 1 ? "s" : ""); for (item in rwdir) printf("\t%s\n", rwdir[item]); } }' < /etc/exports > $OUTPUT if [ -s $OUTPUT ] ; then printf "\nChecking for globally exported file systems.\n" cat $OUTPUT fi fi # Display any changes in setuid files and devices. # if checkyesno check_devices; then > $ERR ( # Convert check_devices_ignore_fstypes="foo !bar bax" # into "-fstype foo -o ! -fstype bar -o -fstype bax" # and check_devices_ignore_paths="/foo !/bar /bax" # into " -path /foo -o ! -path /bar -o -path /bax" # ignexpr=$(\ echo $check_devices_ignore_fstypes | \ sed -e's/\(!*\)\([^[:space:]]\{1,\}\)/-o \1 -fstype \2/g' ; \ echo $check_devices_ignore_paths | \ sed -e's/\(!*\)\([^[:space:]]\{1,\}\)/-o \1 -path \2/g' \ ) # Massage the expression into ( $ignexpr ) -a -prune -o if [ -n "${ignexpr}" ]; then ignexpr=$(\ echo $ignexpr | \ sed -e 's/^-o /( /' \ -e 's/$/ ) -a -prune -o/' \ ) fi find / $ignexpr \ \( \( -perm -u+s -a ! -type d \) -o \ \( -perm -g+s -a ! -type d \) -o \ -type b -o -type c \) -print0 | \ xargs -0 ls -ldgTq | sort +9 > $LIST ) 2> $OUTPUT # Display any errors that occurred during system file walk. if [ -s $OUTPUT ] ; then printf "Setuid/device find errors:\n" >> $ERR cat $OUTPUT >> $ERR printf "\n" >> $ERR fi # Display any changes in the setuid file list. egrep -v '^[bc]' $LIST > $TMP1 if [ -s $TMP1 ] ; then # Check to make sure uudecode isn't setuid. if grep -w uudecode $TMP1 > /dev/null ; then printf "\nUudecode is setuid.\n" >> $ERR fi file=$work_dir/setuid migrate_file "$backup_dir/setuid" "$file" CUR=${file}.current BACK=${file}.backup if [ -s $CUR ] ; then if cmp -s $CUR $TMP1 ; then : else > $TMP2 join -110 -210 -v2 $CUR $TMP1 > $OUTPUT if [ -s $OUTPUT ] ; then printf "Setuid additions:\n" >> $ERR tee -a $TMP2 < $OUTPUT >> $ERR printf "\n" >> $ERR fi join -110 -210 -v1 $CUR $TMP1 > $OUTPUT if [ -s $OUTPUT ] ; then printf "Setuid deletions:\n" >> $ERR tee -a $TMP2 < $OUTPUT >> $ERR printf "\n" >> $ERR fi sort -k10 $TMP2 $CUR $TMP1 | \ sed -e 's/[ ][ ]*/ /g' | \ uniq -u > $OUTPUT if [ -s $OUTPUT ] ; then printf "Setuid changes:\n" >> $ERR column -t $OUTPUT >> $ERR printf "\n" >> $ERR fi backup_file update $TMP1 $CUR $BACK fi else printf "Setuid additions:\n" >> $ERR column -t $TMP1 >> $ERR printf "\n" >> $ERR backup_file add $TMP1 $CUR $BACK fi fi # Check for block and character disk devices that are readable or # writable or not owned by root.operator. >$TMP1 DISKLIST="ccd ch hk hp ld md ra raid rb rd rl rx \ sd se ss uk up vnd wd xd xy" # DISKLIST="$DISKLIST ct mt st wt" for i in $DISKLIST; do egrep "^b.*/${i}[0-9][0-9]*[a-p]$" $LIST >> $TMP1 egrep "^c.*/r${i}[0-9][0-9]*[a-p]$" $LIST >> $TMP1 done awk '$3 != "root" || $4 != "operator" || $1 !~ /.rw-r-----/ \ { printf "Disk %s is user %s, group %s, permissions %s.\n", \ $11, $3, $4, $1; }' < $TMP1 > $OUTPUT if [ -s $OUTPUT ] ; then printf "\nChecking disk ownership and permissions.\n" >> $ERR cat $OUTPUT >> $ERR printf "\n" >> $ERR fi # Display any changes in the device file list. egrep '^[bc]' $LIST | sort -k11 > $TMP1 if [ -s $TMP1 ] ; then file=$work_dir/device migrate_file "$backup_dir/device" "$file" CUR=${file}.current BACK=${file}.backup if [ -s $CUR ] ; then if cmp -s $CUR $TMP1 ; then : else > $TMP2 join -111 -211 -v2 $CUR $TMP1 > $OUTPUT if [ -s $OUTPUT ] ; then printf "Device additions:\n" >> $ERR tee -a $TMP2 < $OUTPUT >> $ERR printf "\n" >> $ERR fi join -111 -211 -v1 $CUR $TMP1 > $OUTPUT if [ -s $OUTPUT ] ; then printf "Device deletions:\n" >> $ERR tee -a $TMP2 < $OUTPUT >> $ERR printf "\n" >> $ERR fi # Report any block device change. Ignore # character devices, only the name is # significant. cat $TMP2 $CUR $TMP1 | \ sed -e '/^c/d' | \ sort -k11 | \ sed -e 's/[ ][ ]*/ /g' | \ uniq -u > $OUTPUT if [ -s $OUTPUT ] ; then printf "Block device changes:\n" >> $ERR column -t $OUTPUT >> $ERR printf "\n" >> $ERR fi backup_file update $TMP1 $CUR $BACK fi else printf "Device additions:\n" >> $ERR column -t $TMP1 >> $ERR printf "\n" >> $ERR backup_file add $TMP1 $CUR $BACK >> $ERR fi fi if [ -s $ERR ] ; then printf "\nChecking setuid files and devices:\n" cat $ERR printf "\n" fi fi # Check special files. # Check system binaries. # # Create the mtree tree specifications using: # mtree -cx -pDIR -kmd5,uid,gid,mode,nlink,size,link,time > DIR.secure # chown root:wheel DIR.secure # chmod u+r,go= DIR.secure # # Note, this is not complete protection against Trojan horsed binaries, as # the hacker can modify the tree specification to match the replaced binary. # For details on really protecting yourself against modified binaries, see # the mtree(8) manual page. # if checkyesno check_mtree; then if checkyesno check_mtree_follow_symlinks; then check_mtree_flags="-L" else check_mtree_flags="" fi mtree -e -l -p / $check_mtree_flags -f $SPECIALSPEC 3>&1 >$OUTPUT 2>&3 | grep -v '^mtree: dev/tty: Device not configured$' >&2 if [ -s $OUTPUT ]; then printf "\nChecking special files and directories.\n" cat $OUTPUT fi for file in /etc/mtree/*.secure; do [ $file = '/etc/mtree/*.secure' ] && continue tree=$(sed -n -e '3s/.* //p' -e 3q $file) mtree $check_mtree_flags -f $file -p $tree > $TMP1 if [ -s $TMP1 ]; then printf "\nChecking $tree:\n" cat $TMP1 fi done > $OUTPUT if [ -s $OUTPUT ]; then printf "\nChecking system binaries:\n" cat $OUTPUT fi fi # Backup disklabels of available disks # if checkyesno check_disklabels; then # migrate old disklabels for file in $(ls -1d $backup_dir/$backup_dir/disklabel.* \ $backup_dir/disklabel.* 2>/dev/null); do migrate_file "$file" "$work_dir/${file##*/}" done # generate list of old disklabels, fdisks & wedges, # and remove them ls -1d $work_dir/disklabel.* $work_dir/fdisk.* $work_dir/wedges.* \ 2>/dev/null | egrep -v '\.(backup|current)(,v)?$' > $LABELS xargs rm < $LABELS disks="$(/sbin/sysctl -n hw.iostatnames)" # generate disklabels of all disks excluding: cd fd md dk st # nfs and "device" (the header of iostat) for i in $disks; do case $i in [cfm]d[0-9]*|dk[0-9]*|st[0-9]*|nfs[0-9]*) ;; *) if disklabel $i > /dev/null 2>&1; then disklabel $i > "$work_dir/disklabel.$i" fi ;; esac done # if fdisk is available, generate fdisks for: ed ld sd wd if [ -x /sbin/fdisk ]; then for i in $disks; do case $i in [elsw]d[0-9]*) /sbin/fdisk $i > "$work_dir/fdisk.$i" \ 2>/dev/null ;; esac done fi # if dkctl is available, generate dkctl listwedges # for: ed ld sd wd cgd ofdisk ra rl raid if [ -x /sbin/dkctl ]; then for i in $disks; do case $i in [elsw]d[0-9]*|cgd[0-9]*|ofdisk[0-9]*|r[al][0-9]*|raid[0-9]*) if /sbin/dkctl $i listwedges | grep -qe '[0-9] wedges:'; then /sbin/dkctl $i listwedges \ > "$work_dir/wedges.$i" 2>/dev/null fi ;; esac done fi # if raidctl is available, generate raidctls for: raid if [ -x /sbin/raidctl ]; then disks=$(iostat -x | awk 'NR > 1 && $1 ~ /^raid/ { print $1; }') for i in $disks; do /sbin/raidctl -G $i > "$work_dir/raidconf.$i" \ 2>/dev/null done fi # append list of new disklabels, fdisks and wedges ls -1d $work_dir/disklabel.* $work_dir/fdisk.* $work_dir/wedges.* \ $work_dir/raidconf.* 2>/dev/null | egrep -v '\.(backup|current)(,v)?$' >> $LABELS CHANGELIST="$LABELS $CHANGELIST" fi if checkyesno check_lvm; then # generate list of existing LVM elements Physical Volumes, # Volume Groups and Logical Volumes. if [ -x /sbin/lvm ]; then lvm pvdisplay -m >"$work_dir/lvm.pv" 2>/dev/null lvm vgdisplay -m >"$work_dir/lvm.vg" 2>/dev/null lvm lvdisplay -m >"$work_dir/lvm.lv" 2>/dev/null fi ls -1d $work_dir/lvm.* 2>/dev/null | egrep -v '\.(backup|current)(,v)?$'>> $LVM_LABELS CHANGELIST="$CHANGELIST $LVM_LABELS" fi # Check for changes in the list of installed pkgs # if checkyesno check_pkgs && have_pkgs; then pkgs=$work_dir/pkgs migrate_file "$backup_dir/pkgs" "$pkgs" pkg_dbdir=$(${pkg_admin} config-var PKG_DBDIR) : ${pkg_dbdir:=/usr/pkg/pkgdb} ( cd $pkg_dbdir $pkg_info | sort echo "" find . \( -name +REQUIRED_BY -o -name +CONTENTS \) -print0 | xargs -0 ls -ldgTq | sort -t. +1 | sed -e 's, \./, ,' ) > $pkgs echo "$pkgs" > $PKGS CHANGELIST="$PKGS $CHANGELIST" fi # List of files that get backed up and checked for any modifications. # Any changes cause the files to rotate. # if checkyesno check_changelist ; then mtree -D -k type -f $SPECIALSPEC -E exclude | sed '/^type=file/!d ; s/type=file \.//' | unvis > $CHANGEFILES ( # Add other files which might dynamically exist: # /etc/ifconfig.* # /etc/raid*.conf # /etc/rc.d/* # /etc/rc.conf.d/* # echo "/etc/ifconfig.*" echo "/etc/raid*.conf" echo "/etc/rc.d/*" echo "/etc/rc.conf.d/*" echo "/etc/lvm/backup/*" echo "/etc/lvm/archive/*" # Add /etc/changelist # if [ -s /etc/changelist ]; then grep -v '^#' /etc/changelist fi ) | while read file; do case "$file" in *[\*\?\[]*) # If changelist line is a glob ... # ... expand possible backup files # ls -1d $backup_dir/${file}.current 2>/dev/null \ | sed "s,^$backup_dir/,, ; s,\.current$,," # ... expand possible files # ls -1d $file 2>/dev/null ;; *) # Otherwise, just print the filename echo $file ;; esac done >> $CHANGEFILES CHANGELIST="$CHANGEFILES $CHANGELIST" fi # Save entropy to ${random_file} if defined, like # /etc/rc.d/random_seed. # if [ -n "${random_file:-}" ]; then rndctl -S "$random_file" fi # Special case backups, including the master password file and # ssh private host keys. The normal backup mechanisms for # $check_changelist (see below) also print out the actual file # differences and we don't want to do that for these files # echo $MP > $TMP1 # always add /etc/master.passwd mtree -D -k type -f $SPECIALSPEC -I nodiff | sed '/^type=file/!d ; s/type=file \.//' | unvis >> $TMP1 grep -v '^$' $TMP1 | sort -u > $TMP2 while read file; do backup_and_diff "$file" no done < $TMP2 if [ -n "$CHANGELIST" ]; then grep -h -v '^$' $CHANGELIST | sort -u > $TMP1 comm -23 $TMP1 $TMP2 | while read file; do backup_and_diff "$file" yes done fi if have_pkgs; then if checkyesno check_pkg_vulnerabilities; then ${pkg_admin} ${_compat_K_flag} audit >${OUTPUT} 2>&1 if [ -s ${OUTPUT} ]; then printf "\nInstalled vulnerable packages:\n" cat ${OUTPUT} fi fi if checkyesno check_pkg_signatures; then ${pkg_admin} ${_compat_K_flag} check >${OUTPUT} 2>&1 if [ $? -ne 0 ]; then printf "\nFiles with invalid signatures:\n" cat ${OUTPUT} fi fi fi if [ -f /etc/security.local ]; then . /etc/security.local > $OUTPUT 2>&1 if [ -s $OUTPUT ] ; then printf "\nRunning /etc/security.local:\n" cat $OUTPUT fi fi