security revision 1.125
1 #!/bin/sh - 2 # 3 # $NetBSD: security,v 1.125 2019/09/18 22:27:55 uwe Exp $ 4 # from: @(#)security 8.1 (Berkeley) 6/9/93 5 # 6 7 PATH=/sbin:/usr/sbin:/bin:/usr/bin 8 9 rcvar_manpage='security.conf(5)' 10 11 if [ -f /etc/rc.subr ]; then 12 . /etc/rc.subr 13 else 14 echo "Can't read /etc/rc.subr; aborting." 15 exit 1; 16 fi 17 18 umask 077 19 TZ=UTC; export TZ 20 21 if [ -s /etc/security.conf ]; then 22 . /etc/security.conf 23 fi 24 if [ -s /etc/pkgpath.conf ]; then 25 . /etc/pkgpath.conf 26 fi 27 28 # Set reasonable defaults (if they're not set in security.conf) 29 # 30 backup_dir=${backup_dir:-/var/backups} 31 max_loginlen=${max_loginlen:-8} 32 max_grouplen=${max_grouplen:-8} 33 pkg_admin=${pkg_admin:-/usr/sbin/pkg_admin} 34 pkg_info=${pkg_info:-/usr/sbin/pkg_info} 35 36 # Other configurable variables 37 # 38 special_files="/etc/mtree/special /etc/mtree/special.local" 39 MP=/etc/master.passwd 40 CHANGELIST="" 41 work_dir=$backup_dir/work 42 43 if [ ! -d "$work_dir" ]; then 44 mkdir -p "$work_dir" 45 fi 46 47 SECUREDIR=$(mktemp -d -t _securedir) || exit 1 48 49 trap "/bin/rm -rf $SECUREDIR ; exit 0" EXIT INT QUIT PIPE 50 51 if ! cd "$SECUREDIR"; then 52 echo "Can not cd to $SECUREDIR". 53 exit 1 54 fi 55 56 ERR=err.$$ 57 TMP1=tmp1.$$ 58 TMP2=tmp2.$$ 59 MPBYUID=mpbyuid.$$ 60 MPBYPATH=mpbypath.$$ 61 LIST=list.$$ 62 OUTPUT=output.$$ 63 LABELS=labels.$$ 64 LVM_LABELS=lvm.$$ 65 PKGS=pkgs.$$ 66 CHANGEFILES=changefiles.$$ 67 SPECIALSPEC=specialspec.$$ 68 69 if [ -n "${pkgdb_dir}" ]; then 70 echo "WARNING: Setting pkgdb_dir in security.conf(5) is deprecated" 71 echo "WARNING: Please define PKG_DBDIR in pkg_install.conf(5) instead" 72 _compat_K_flag="-K ${pkgdb_dir}" 73 fi 74 75 have_pkgs() { 76 $pkg_info ${_compat_K_flag} -q -E '*' 77 } 78 79 # migrate_file old new 80 # Determine if the "${old}" path name needs to be migrated to the 81 # "${new}" path. Also checks if "${old}.current" needs migrating, 82 # and if so, migrate it and possibly "${old}.current,v" and 83 # "${old}.backup". 84 # 85 migrate_file() 86 { 87 _old=$1 88 _new=$2 89 if [ -z "$_old" ] || [ -z "$_new" ]; then 90 err 3 "USAGE: migrate_file old new" 91 fi 92 if [ ! -d "${_new%/*}" ]; then 93 mkdir -p "${_new%/*}" 94 fi 95 if [ -f "${_old}" ] && ! [ -f "${_new}" ]; then 96 echo "==> migrating ${_old}" 97 echo " to ${_new}" 98 mv "${_old}" "${_new}" 99 fi 100 if [ -f "${_old}.current" ] && ! [ -f "${_new}.current" ]; then 101 echo "==> migrating ${_old}.current" 102 echo " to ${_new}.current" 103 mv "${_old}.current" "${_new}.current" 104 if [ -f "${_old}.current,v" ] && 105 ! [ -f "${_new}.current,v" ]; then 106 echo "==> migrating ${_old}.current,v" 107 echo " to ${_new}.current,v" 108 mv "${_old}.current,v" "${_new}.current,v" 109 fi 110 if [ -f "${_old}.backup" ] && ! [ -f "${_new}.backup" ]; then 111 echo "==> migrating ${_old}.backup" 112 echo " to ${_new}.backup" 113 mv "${_old}.backup" "${_new}.backup" 114 fi 115 fi 116 } 117 118 119 # backup_and_diff file printdiff 120 # Determine if file needs backing up, and if so, do it. 121 # If printdiff is yes, display the diffs, otherwise 122 # just print a message saying "[changes omitted]". 123 # 124 backup_and_diff() 125 { 126 _file=$1 127 _printdiff=$2 128 if [ -z "$_file" ] || [ -z "$_printdiff" ]; then 129 err 3 "USAGE: backup_and_diff file printdiff" 130 fi 131 ! checkyesno _printdiff 132 _printdiff=$? 133 134 _old=$backup_dir/${_file##*/} 135 case "$_file" in 136 $work_dir/*) 137 _new=$_file 138 migrate_file "$backup_dir/$_old" "$_new" 139 migrate_file "$_old" "$_new" 140 ;; 141 *) 142 _new=$backup_dir/$_file 143 migrate_file "$_old" "$_new" 144 ;; 145 esac 146 CUR=${_new}.current 147 BACK=${_new}.backup 148 if [ -f $_file ]; then 149 if [ -f $CUR ] ; then 150 if [ "$_printdiff" -ne 0 ]; then 151 diff ${diff_options} $CUR $_file > $OUTPUT 152 else 153 if ! cmp -s $CUR $_file; then 154 echo "[changes omitted]" 155 fi > $OUTPUT 156 fi 157 if [ -s $OUTPUT ] ; then 158 printf \ 159 "\n======\n%s diffs (OLD < > NEW)\n======\n" $_file 160 cat $OUTPUT 161 backup_file update $_file $CUR $BACK 162 fi 163 else 164 printf "\n======\n%s added\n======\n" $_file 165 if [ "$_printdiff" -ne 0 ]; then 166 diff ${diff_options} /dev/null $_file 167 else 168 echo "[changes omitted]" 169 fi 170 backup_file add $_file $CUR $BACK 171 fi 172 else 173 if [ -f $CUR ]; then 174 printf "\n======\n%s removed\n======\n" $_file 175 if [ "$_printdiff" -ne 0 ]; then 176 diff ${diff_options} $CUR /dev/null 177 else 178 echo "[changes omitted]" 179 fi 180 backup_file remove $_file $CUR $BACK 181 fi 182 fi 183 } 184 185 186 # These are used several times. 187 # 188 awk -F: '!/^\+/ { print $1 " " $3 }' $MP | sort -k2n > $MPBYUID 189 awk -F: '{ print $1 " " $9 }' $MP | sort -k2 > $MPBYPATH 190 for file in $special_files; do 191 [ -s $file ] && cat $file 192 done | mtree -CM -k all > $SPECIALSPEC || exit 1 193 194 195 # Check the master password file syntax. 196 # 197 if checkyesno check_passwd; then 198 # XXX: the sense of permit_star is reversed; the code works as 199 # implemented, but usage needs to be negated. 200 checkyesno check_passwd_permit_star && permit_star=0 || permit_star=1 201 checkyesno check_passwd_permit_nonalpha \ 202 && permit_nonalpha=1 || permit_nonalpha=0 203 204 awk -v "len=$max_loginlen" \ 205 -v "nowarn_shells_list=$check_passwd_nowarn_shells" \ 206 -v "nowarn_users_list=$check_passwd_nowarn_users" \ 207 -v "permit_star=$permit_star" \ 208 -v "permit_nonalpha=$permit_nonalpha" \ 209 ' 210 BEGIN { 211 while ( getline < "/etc/shells" > 0 ) { 212 if ($0 ~ /^\#/ || $0 ~ /^$/ ) 213 continue; 214 shells[$1]++; 215 } 216 split(nowarn_shells_list, a); 217 for (i in a) nowarn_shells[a[i]]++; 218 split(nowarn_users_list, a); 219 for (i in a) nowarn_users[a[i]]++; 220 uid0_users_list="root toor" 221 split(uid0_users_list, a); 222 for (i in a) uid0_users[a[i]]++; 223 FS=":"; 224 } 225 226 { 227 if ($0 ~ /^[ ]*$/) { 228 printf "Line %d is a blank line.\n", NR; 229 next; 230 } 231 232 # NIS compat entry? 233 compatline = $1 ~ "^[\\+-]"; 234 if (compatline) { 235 if ($1 == "+" && NF == 1) { 236 next; 237 } 238 sub("^.", "", $1); 239 } 240 if (NF != 10) 241 printf "Line %d has the wrong number of fields.\n", NR; 242 if (compatline) { 243 if ($3 == 0) 244 printf "Line %d includes entries with uid 0.\n", 245 NR; 246 if ($1 == "") 247 next; 248 } 249 if (!permit_nonalpha && 250 $1 !~ /^[_A-Za-z0-9]([-A-Za-z0-9_.]*[A-Za-z0-9])*$/) 251 printf "Login %s has non-alphanumeric characters.\n", 252 $1; 253 if (length($1) > len) 254 printf "Login %s has more than "len" characters.\n", 255 $1; 256 if ($2 == "" && !compatline && !nowarn_users[$1]) 257 printf "Login %s has no password.\n", $1; 258 if (!nowarn_shells[$10] && !nowarn_users[$1]) { 259 if (length($2) != 13 && 260 length($2) != 20 && 261 $2 !~ /^\$1/ && 262 $2 !~ /^\$2/ && 263 $2 !~ /^\$sha1/ && 264 $2 != "" && 265 (permit_star || $2 != "*") && 266 $2 !~ /^\*[A-z-]+$/ && 267 $1 != "toor") { 268 if ($10 == "" || shells[$10]) 269 printf "Login %s is off but still has "\ 270 "a valid shell (%s)\n", $1, $10; 271 } else if (compatline && $10 == "") { 272 # nothing 273 } else if (! shells[$10]) 274 printf "Login %s does not have a valid "\ 275 "shell (%s)\n", $1, $10; 276 } 277 if ($3 == 0 && !uid0_users[$1] && !nowarn_users[$1]) 278 printf "Login %s has a user id of 0.\n", $1; 279 if ($3 != "" && $3 < 0) 280 printf "Login %s has a negative user id.\n", $1; 281 if ($4 != "" && $4 < 0) 282 printf "Login %s has a negative group id.\n", $1; 283 }' < $MP > $OUTPUT 284 if [ -s $OUTPUT ] ; then 285 printf "\nChecking the $MP file:\n" 286 cat $OUTPUT 287 fi 288 289 awk -F: '{ print $1 }' $MP | sort | uniq -d > $OUTPUT 290 if [ -s $OUTPUT ] ; then 291 printf "\n$MP has duplicate user names.\n" 292 column $OUTPUT 293 fi 294 295 awk -v "permit_dups_list=$check_passwd_permit_dups" \ 296 ' 297 BEGIN { 298 split(permit_dups_list, a); 299 for (i in a) permit_dups[a[i]]++; 300 } 301 { 302 if (!permit_dups[$1]) 303 print $2; 304 }' < $MPBYUID | uniq -d > $TMP2 305 if [ -s $TMP2 ] ; then 306 printf "\n$MP has duplicate user ids.\n" 307 while read uid; do 308 grep -w $uid $MPBYUID 309 done < $TMP2 | column 310 fi 311 fi 312 313 # Check the group file syntax. 314 # 315 if checkyesno check_group; then 316 GRP=/etc/group 317 awk -F: -v "len=$max_grouplen" '{ 318 if ($0 ~ /^[ ]*$/) { 319 printf "Line %d is a blank line.\n", NR; 320 next; 321 } 322 if (NF != 4 && ($1 != "+" || NF != 1)) 323 printf "Line %d has the wrong number of fields.\n", NR; 324 if ($1 == "+" ) { 325 next; 326 } 327 if ($1 !~ /^[_A-Za-z0-9]([-A-Za-z0-9_.]*[A-Za-z0-9])*$/) 328 printf "Group %s has non-alphanumeric characters.\n", 329 $1; 330 if (length($1) > len) 331 printf "Group %s has more than "len" characters.\n", $1; 332 if ($3 !~ /[0-9]*/) 333 printf "Login %s has a negative group id.\n", $1; 334 }' < $GRP > $OUTPUT 335 if [ -s $OUTPUT ] ; then 336 printf "\nChecking the $GRP file:\n" 337 cat $OUTPUT 338 fi 339 340 awk -F: '{ print $1 }' $GRP | sort | uniq -d > $OUTPUT 341 dupgroups="" 342 for group in $(cat $OUTPUT) ; do 343 gcount=$(awk -F: "/$group/ { print \$1,\$3 }" $GRP | 344 sort -u | wc -l) 345 if [ $gcount -gt 1 ]; then 346 dupgroups="$dupgroups $group" 347 fi 348 done 349 if [ ! -z $dupgroups ] ; then 350 printf "\n$GRP has duplicate group names.\n" 351 printf "$dupgroups\n" 352 fi 353 fi 354 355 # Check for root paths, umask values in startup files. 356 # The check for the root paths is problematical -- it's likely to fail 357 # in other environments. Once the shells have been modified to warn 358 # of '.' in the path, the path tests should go away. 359 # 360 if checkyesno check_rootdotfiles; then 361 rhome=~root 362 umaskset=no 363 list="/etc/csh.cshrc /etc/csh.login ${rhome}/.cshrc ${rhome}/.login" 364 for i in $list ; do 365 if [ -f $i ] ; then 366 if egrep '^[ \t]*umask[ \t]+[0-7]+' $i > /dev/null ; 367 then 368 umaskset=yes 369 fi 370 # Double check the umask value itself; ensure that 371 # both the group and other write bits are set. 372 # 373 egrep '^[ \t]*umask[ \t]+[0-7]+' $i | 374 awk '{ 375 if ($2 ~ /^.$/ || $2 ~! /[^2367].$/) { 376 print "\tRoot umask is group writable" 377 } 378 if ($2 ~ /[^2367]$/) { 379 print "\tRoot umask is other writable" 380 } 381 }' | sort -u 382 SAVE_PATH=$PATH 383 unset PATH 384 /bin/csh -f -s << end-of-csh > /dev/null 2>&1 385 source $i 386 /bin/ls -ldgT \$path > $TMP1 387 end-of-csh 388 export PATH=$SAVE_PATH 389 awk '{ 390 if ($10 ~ /^\.$/) { 391 print "\tThe root path includes ."; 392 next; 393 } 394 } 395 $1 ~ /^d....w/ \ 396 { print "\tRoot path directory " $10 " is group writable." } \ 397 $1 ~ /^d.......w/ \ 398 { print "\tRoot path directory " $10 " is other writable." }' \ 399 < $TMP1 400 fi 401 done > $OUTPUT 402 if [ $umaskset = no ] || [ -s $OUTPUT ] ; then 403 printf "\nChecking root csh paths, umask values:\n$list\n\n" 404 if [ -s $OUTPUT ]; then 405 cat $OUTPUT 406 fi 407 if [ $umaskset = no ] ; then 408 printf "\tRoot csh startup files do not set the umask.\n" 409 fi 410 fi 411 412 umaskset=no 413 list="/etc/profile ${rhome}/.profile" 414 for i in $list; do 415 if [ -f $i ] ; then 416 if egrep umask $i > /dev/null ; then 417 umaskset=yes 418 fi 419 egrep umask $i | 420 awk '$2 ~ /^.$/ || $2 ~ /[^2367].$/ \ 421 { print "\tRoot umask is group writable" } \ 422 $2 ~ /[^2367]$/ \ 423 { print "\tRoot umask is other writable" }' 424 SAVE_PATH=$PATH 425 unset PATH 426 /bin/sh << end-of-sh > /dev/null 2>&1 427 . $i 428 list=\$(echo \$PATH | /usr/bin/sed -e \ 429 's/^:/.:/;s/:$/:./;s/::/:.:/g;s/:/ /g') 430 /bin/ls -ldgT \$list > $TMP1 431 end-of-sh 432 export PATH=$SAVE_PATH 433 awk '{ 434 if ($10 ~ /^\.$/) { 435 print "\tThe root path includes ."; 436 next; 437 } 438 } 439 $1 ~ /^d....w/ \ 440 { print "\tRoot path directory " $10 " is group writable." } \ 441 $1 ~ /^d.......w/ \ 442 { print "\tRoot path directory " $10 " is other writable." }' \ 443 < $TMP1 444 445 fi 446 done > $OUTPUT 447 if [ $umaskset = no ] || [ -s $OUTPUT ] ; then 448 printf "\nChecking root sh paths, umask values:\n$list\n" 449 if [ -s $OUTPUT ]; then 450 cat $OUTPUT 451 fi 452 if [ $umaskset = no ] ; then 453 printf "\tRoot sh startup files do not set the umask.\n" 454 fi 455 fi 456 fi 457 458 # Root and uucp should both be in /etc/ftpusers. 459 # 460 if checkyesno check_ftpusers; then 461 list="uucp "$(awk '$2 == 0 { print $1 }' $MPBYUID) 462 for i in $list; do 463 if /usr/libexec/ftpd -C $i ; then 464 printf "\t$i is not denied\n" 465 fi 466 done > $OUTPUT 467 if [ -s $OUTPUT ]; then 468 printf "\nChecking the /etc/ftpusers configuration:\n" 469 cat $OUTPUT 470 fi 471 fi 472 473 # Uudecode should not be in the /etc/mail/aliases file. 474 # 475 if checkyesno check_aliases; then 476 for f in /etc/mail/aliases /etc/aliases; do 477 if [ -f $f ] && egrep '^[^#]*(uudecode|decode).*\|' $f; then 478 printf "\nEntry for uudecode in $f file.\n" 479 fi 480 done 481 fi 482 483 # Files that should not have + signs. 484 # 485 if checkyesno check_rhosts; then 486 list="/etc/hosts.equiv /etc/hosts.lpd" 487 for f in $list ; do 488 if [ -f $f ] && egrep '\+' $f > /dev/null ; then 489 printf "\nPlus sign in $f file.\n" 490 fi 491 done 492 493 # Check for special users with .rhosts files. Only root and toor should 494 # have .rhosts files. Also, .rhosts files should not have plus signs. 495 awk -F: '$1 != "root" && $1 != "toor" && \ 496 ($3 < 100 || $1 == "ftp" || $1 == "uucp") \ 497 { print $1 " " $9 }' $MP | 498 sort -k2 | 499 while read uid homedir; do 500 if [ -f ${homedir}/.rhosts ] ; then 501 rhost=$(ls -ldgT ${homedir}/.rhosts) 502 printf -- "$uid: $rhost\n" 503 fi 504 done > $OUTPUT 505 if [ -s $OUTPUT ] ; then 506 printf "\nChecking for special users with .rhosts files.\n" 507 cat $OUTPUT 508 fi 509 510 while read uid homedir; do 511 if [ -f ${homedir}/.rhosts ] && 512 [ -r ${homedir}/.rhosts ] && 513 cat -f ${homedir}/.rhosts | egrep '\+' > /dev/null 514 then 515 printf -- "$uid: + in .rhosts file.\n" 516 fi 517 done < $MPBYPATH > $OUTPUT 518 if [ -s $OUTPUT ] ; then 519 printf "\nChecking .rhosts files syntax.\n" 520 cat $OUTPUT 521 fi 522 fi 523 524 # Check home directories. Directories should not be owned by someone else 525 # or writable. 526 # 527 if checkyesno check_homes; then 528 checkyesno check_homes_permit_usergroups && \ 529 permit_usergroups=1 || permit_usergroups=0 530 while read uid homedir; do 531 if [ -d ${homedir}/ ] ; then 532 file=$(ls -ldgT ${homedir}) 533 printf -- "$uid $file\n" 534 fi 535 done < $MPBYPATH | 536 awk -v "usergroups=$permit_usergroups" \ 537 -v "permit_owners_list=$check_homes_permit_other_owner" ' 538 BEGIN { 539 split(permit_owners_list, a); 540 for (i in a) permit_owners[a[i]]++; 541 } 542 $1 != $4 && $4 != "root" && !permit_owners[$1] \ 543 { print "user " $1 " home directory is owned by " $4 } 544 $2 ~ /^d....w/ && (!usergroups || $5 != $1) \ 545 { print "user " $1 " home directory is group writable" } 546 $2 ~ /^d.......w/ \ 547 { print "user " $1 " home directory is other writable" }' \ 548 > $OUTPUT 549 if [ -s $OUTPUT ] ; then 550 printf "\nChecking home directories.\n" 551 cat $OUTPUT 552 fi 553 554 # Files that should not be owned by someone else or readable. 555 list=".Xauthority .netrc .ssh/id_dsa .ssh/id_rsa .ssh/identity" 556 while read uid homedir; do 557 for f in $list ; do 558 file=${homedir}/${f} 559 if [ -f $file ] ; then 560 printf -- "$uid $f $(ls -ldgT $file)\n" 561 fi 562 done 563 done < $MPBYPATH | 564 awk -v "usergroups=$permit_usergroups" \ 565 -v "permit_owners_list=$check_homes_permit_other_owner" ' 566 BEGIN { 567 split(permit_owners_list, a); 568 for (i in a) permit_owners[a[i]]++; 569 } 570 $1 != $5 && $5 != "root" && !permit_owners[$1] \ 571 { print "user " $1 " " $2 " file is owned by " $5 } 572 $3 ~ /^-...r/ && (!usergroups || $6 != $1) \ 573 { print "user " $1 " " $2 " file is group readable" } 574 $3 ~ /^-......r/ \ 575 { print "user " $1 " " $2 " file is other readable" } 576 $3 ~ /^-....w/ && (!usergroups || $6 != $1) \ 577 { print "user " $1 " " $2 " file is group writable" } 578 $3 ~ /^-.......w/ \ 579 { print "user " $1 " " $2 " file is other writable" }' \ 580 > $OUTPUT 581 582 # Files that should not be owned by someone else or writable. 583 list=".bash_history .bash_login .bash_logout .bash_profile .bashrc \ 584 .cshrc .emacs .exrc .forward .history .k5login .klogin .login \ 585 .logout .profile .qmail .rc_history .rhosts .shosts ssh .tcshrc \ 586 .twmrc .xinitrc .xsession .ssh/authorized_keys \ 587 .ssh/authorized_keys2 .ssh/config .ssh/id_dsa.pub \ 588 .ssh/id_rsa.pub .ssh/identity.pub .ssh/known_hosts \ 589 .ssh/known_hosts2" 590 while read uid homedir; do 591 for f in $list ; do 592 file=${homedir}/${f} 593 if [ -f $file ] ; then 594 printf -- "$uid $f $(ls -ldgT $file)\n" 595 fi 596 done 597 done < $MPBYPATH | 598 awk -v "usergroups=$permit_usergroups" \ 599 -v "permit_owners_list=$check_homes_permit_other_owner" ' 600 BEGIN { 601 split(permit_owners_list, a); 602 for (i in a) permit_owners[a[i]]++; 603 } 604 $1 != $5 && $5 != "root" && !permit_owners[$1] \ 605 { print "user " $1 " " $2 " file is owned by " $5 } 606 $3 ~ /^-....w/ && (!usergroups || $6 != $1) \ 607 { print "user " $1 " " $2 " file is group writable" } 608 $3 ~ /^-.......w/ \ 609 { print "user " $1 " " $2 " file is other writable" }' \ 610 >> $OUTPUT 611 if [ -s $OUTPUT ] ; then 612 printf "\nChecking dot files.\n" 613 cat $OUTPUT 614 fi 615 fi 616 617 # Mailboxes should be owned by user and unreadable. 618 # 619 if checkyesno check_varmail; then 620 ls -lA /var/mail | \ 621 awk ' NR == 1 { next; } 622 $9 ~ /^\./ {next; } 623 $3 != $9 { 624 print "user " $9 " mailbox is owned by " $3 625 } 626 $1 != "-rw-------" { 627 print "user " $9 " mailbox is " $1 ", group " $4 628 }' > $OUTPUT 629 if [ -s $OUTPUT ] ; then 630 printf "\nChecking mailbox ownership.\n" 631 cat $OUTPUT 632 fi 633 fi 634 635 # NFS exports shouldn't be globally exported 636 # 637 if checkyesno check_nfs && [ -f /etc/exports ]; then 638 awk '{ 639 # ignore comments and blank lines 640 if ($0 ~ /^\#/ || $0 ~ /^$/ ) 641 next; 642 # manage line continuation 643 while ($NF ~ /^\\$/) { 644 $NF = ""; 645 line = $0 ""; 646 getline; 647 $0 = line $0 ""; 648 } 649 650 delete dir; 651 readonly = ndir = 0; 652 for (i = 1; i <= NF; ++i) { 653 if ($i ~ /^\//) dir[ndir++] = $i; 654 else if ($i ~ /^-/) { 655 if ($i ~ /^-(ro|o)$/) readonly = 1; 656 if ($i ~ /^-network/) next; 657 } 658 else next; 659 } 660 if (readonly) 661 for (item in dir) 662 rodir[nrodir++] = dir[item]; 663 else 664 for (item in dir) 665 rwdir[nrwdir++] = dir[item]; 666 667 } 668 669 END { 670 if (nrodir) { 671 printf("Globally exported file system%s, read-only:\n", 672 nrodir > 1 ? "s" : ""); 673 for (item in rodir) 674 printf("\t%s\n", rodir[item]); 675 } 676 if (nrwdir) { 677 printf("Globally exported file system%s, read-write:\n", 678 nrwdir > 1 ? "s" : ""); 679 for (item in rwdir) 680 printf("\t%s\n", rwdir[item]); 681 } 682 }' < /etc/exports > $OUTPUT 683 if [ -s $OUTPUT ] ; then 684 printf "\nChecking for globally exported file systems.\n" 685 cat $OUTPUT 686 fi 687 fi 688 689 # Display any changes in setuid files and devices. 690 # 691 if checkyesno check_devices; then 692 > $ERR 693 ( 694 695 # Convert check_devices_ignore_fstypes="foo !bar bax" 696 # into "-fstype foo -o ! -fstype bar -o -fstype bax" 697 # and check_devices_ignore_paths="/foo !/bar /bax" 698 # into " -path /foo -o ! -path /bar -o -path /bax" 699 # 700 ignexpr=$(\ 701 echo $check_devices_ignore_fstypes | \ 702 sed -e's/\(!*\)\([^[:space:]]\{1,\}\)/-o \1 -fstype \2/g' ; \ 703 echo $check_devices_ignore_paths | \ 704 sed -e's/\(!*\)\([^[:space:]]\{1,\}\)/-o \1 -path \2/g' \ 705 ) 706 707 # Massage the expression into ( $ignexpr ) -a -prune -o 708 if [ -n "${ignexpr}" ]; then 709 ignexpr=$(\ 710 echo $ignexpr | \ 711 sed -e 's/^-o /( /' \ 712 -e 's/$/ ) -a -prune -o/' \ 713 ) 714 fi 715 716 find / $ignexpr \ 717 \( \( -perm -u+s -a ! -type d \) -o \ 718 \( -perm -g+s -a ! -type d \) -o \ 719 -type b -o -type c \) -print0 | \ 720 xargs -0 ls -ldgTq | sort +9 > $LIST 721 722 ) 2> $OUTPUT 723 724 # Display any errors that occurred during system file walk. 725 if [ -s $OUTPUT ] ; then 726 printf "Setuid/device find errors:\n" >> $ERR 727 cat $OUTPUT >> $ERR 728 printf "\n" >> $ERR 729 fi 730 731 # Display any changes in the setuid file list. 732 egrep -v '^[bc]' $LIST > $TMP1 733 if [ -s $TMP1 ] ; then 734 # Check to make sure uudecode isn't setuid. 735 if grep -w uudecode $TMP1 > /dev/null ; then 736 printf "\nUudecode is setuid.\n" >> $ERR 737 fi 738 739 file=$work_dir/setuid 740 migrate_file "$backup_dir/setuid" "$file" 741 CUR=${file}.current 742 BACK=${file}.backup 743 if [ -s $CUR ] ; then 744 if cmp -s $CUR $TMP1 ; then 745 : 746 else 747 > $TMP2 748 join -110 -210 -v2 $CUR $TMP1 > $OUTPUT 749 if [ -s $OUTPUT ] ; then 750 printf "Setuid additions:\n" >> $ERR 751 tee -a $TMP2 < $OUTPUT >> $ERR 752 printf "\n" >> $ERR 753 fi 754 755 join -110 -210 -v1 $CUR $TMP1 > $OUTPUT 756 if [ -s $OUTPUT ] ; then 757 printf "Setuid deletions:\n" >> $ERR 758 tee -a $TMP2 < $OUTPUT >> $ERR 759 printf "\n" >> $ERR 760 fi 761 762 sort -k10 $TMP2 $CUR $TMP1 | \ 763 sed -e 's/[ ][ ]*/ /g' | \ 764 uniq -u > $OUTPUT 765 if [ -s $OUTPUT ] ; then 766 printf "Setuid changes:\n" >> $ERR 767 column -t $OUTPUT >> $ERR 768 printf "\n" >> $ERR 769 fi 770 771 backup_file update $TMP1 $CUR $BACK 772 fi 773 else 774 printf "Setuid additions:\n" >> $ERR 775 column -t $TMP1 >> $ERR 776 printf "\n" >> $ERR 777 backup_file add $TMP1 $CUR $BACK 778 fi 779 fi 780 781 # Check for block and character disk devices that are readable or 782 # writable or not owned by root.operator. 783 >$TMP1 784 DISKLIST="ccd ch hk hp ld md ra raid rb rd rl rx \ 785 sd se ss uk up vnd wd xd xy" 786 # DISKLIST="$DISKLIST ct mt st wt" 787 for i in $DISKLIST; do 788 egrep "^b.*/${i}[0-9][0-9]*[a-p]$" $LIST >> $TMP1 789 egrep "^c.*/r${i}[0-9][0-9]*[a-p]$" $LIST >> $TMP1 790 done 791 792 awk '$3 != "root" || $4 != "operator" || $1 !~ /.rw-r-----/ \ 793 { printf "Disk %s is user %s, group %s, permissions %s.\n", \ 794 $11, $3, $4, $1; }' < $TMP1 > $OUTPUT 795 if [ -s $OUTPUT ] ; then 796 printf "\nChecking disk ownership and permissions.\n" >> $ERR 797 cat $OUTPUT >> $ERR 798 printf "\n" >> $ERR 799 fi 800 801 # Display any changes in the device file list. 802 egrep '^[bc]' $LIST | sort -k11 > $TMP1 803 if [ -s $TMP1 ] ; then 804 file=$work_dir/device 805 migrate_file "$backup_dir/device" "$file" 806 CUR=${file}.current 807 BACK=${file}.backup 808 809 if [ -s $CUR ] ; then 810 if cmp -s $CUR $TMP1 ; then 811 : 812 else 813 > $TMP2 814 join -111 -211 -v2 $CUR $TMP1 > $OUTPUT 815 if [ -s $OUTPUT ] ; then 816 printf "Device additions:\n" >> $ERR 817 tee -a $TMP2 < $OUTPUT >> $ERR 818 printf "\n" >> $ERR 819 fi 820 821 join -111 -211 -v1 $CUR $TMP1 > $OUTPUT 822 if [ -s $OUTPUT ] ; then 823 printf "Device deletions:\n" >> $ERR 824 tee -a $TMP2 < $OUTPUT >> $ERR 825 printf "\n" >> $ERR 826 fi 827 828 # Report any block device change. Ignore 829 # character devices, only the name is 830 # significant. 831 cat $TMP2 $CUR $TMP1 | \ 832 sed -e '/^c/d' | \ 833 sort -k11 | \ 834 sed -e 's/[ ][ ]*/ /g' | \ 835 uniq -u > $OUTPUT 836 if [ -s $OUTPUT ] ; then 837 printf "Block device changes:\n" >> $ERR 838 column -t $OUTPUT >> $ERR 839 printf "\n" >> $ERR 840 fi 841 842 backup_file update $TMP1 $CUR $BACK 843 fi 844 else 845 printf "Device additions:\n" >> $ERR 846 column -t $TMP1 >> $ERR 847 printf "\n" >> $ERR 848 backup_file add $TMP1 $CUR $BACK >> $ERR 849 fi 850 fi 851 if [ -s $ERR ] ; then 852 printf "\nChecking setuid files and devices:\n" 853 cat $ERR 854 printf "\n" 855 fi 856 fi 857 858 # Check special files. 859 # Check system binaries. 860 # 861 # Create the mtree tree specifications using: 862 # mtree -cx -pDIR -kmd5,uid,gid,mode,nlink,size,link,time > DIR.secure 863 # chown root:wheel DIR.secure 864 # chmod u+r,go= DIR.secure 865 # 866 # Note, this is not complete protection against Trojan horsed binaries, as 867 # the hacker can modify the tree specification to match the replaced binary. 868 # For details on really protecting yourself against modified binaries, see 869 # the mtree(8) manual page. 870 # 871 if checkyesno check_mtree; then 872 if checkyesno check_mtree_follow_symlinks; then 873 check_mtree_flags="-L" 874 else 875 check_mtree_flags="" 876 fi 877 mtree -e -l -p / $check_mtree_flags -f $SPECIALSPEC 3>&1 >$OUTPUT 2>&3 | 878 grep -v '^mtree: dev/tty: Device not configured$' >&2 879 if [ -s $OUTPUT ]; then 880 printf "\nChecking special files and directories.\n" 881 cat $OUTPUT 882 fi 883 884 for file in /etc/mtree/*.secure; do 885 [ $file = '/etc/mtree/*.secure' ] && continue 886 tree=$(sed -n -e '3s/.* //p' -e 3q $file) 887 mtree $check_mtree_flags -f $file -p $tree > $TMP1 888 if [ -s $TMP1 ]; then 889 printf "\nChecking $tree:\n" 890 cat $TMP1 891 fi 892 done > $OUTPUT 893 if [ -s $OUTPUT ]; then 894 printf "\nChecking system binaries:\n" 895 cat $OUTPUT 896 fi 897 fi 898 899 # Backup disklabels of available disks 900 # 901 if checkyesno check_disklabels; then 902 # migrate old disklabels 903 for file in $(ls -1d $backup_dir/$backup_dir/disklabel.* \ 904 $backup_dir/disklabel.* 2>/dev/null); do 905 migrate_file "$file" "$work_dir/${file##*/}" 906 done 907 908 # generate list of old disklabels, fdisks & wedges, 909 # and remove them 910 ls -1d $work_dir/disklabel.* $work_dir/fdisk.* $work_dir/wedges.* \ 911 2>/dev/null | 912 egrep -v '\.(backup|current)(,v)?$' > $LABELS 913 xargs rm < $LABELS 914 915 disks="$(/sbin/sysctl -n hw.iostatnames)" 916 917 # generate disklabels of all disks excluding: cd fd md dk st 918 # nfs and "device" (the header of iostat) 919 for i in $disks; do 920 case $i in 921 [cfm]d[0-9]*|dk[0-9]*|st[0-9]*|nfs[0-9]*) 922 ;; 923 *) 924 if disklabel $i > /dev/null 2>&1; then 925 disklabel $i > "$work_dir/disklabel.$i" 926 fi 927 ;; 928 esac 929 done 930 931 # if fdisk is available, generate fdisks for: ed ld sd wd 932 if [ -x /sbin/fdisk ]; then 933 for i in $disks; do 934 case $i in 935 [elsw]d[0-9]*) 936 /sbin/fdisk $i > "$work_dir/fdisk.$i" \ 937 2>/dev/null 938 ;; 939 esac 940 done 941 fi 942 943 # if dkctl is available, generate dkctl listwedges 944 # for: ed ld sd wd cgd ofdisk ra rl raid 945 if [ -x /sbin/dkctl ]; then 946 for i in $disks; do 947 case $i in 948 [elsw]d[0-9]*|cgd[0-9]*|ofdisk[0-9]*|r[al][0-9]*|raid[0-9]*) 949 if /sbin/dkctl $i listwedges | 950 grep -qe '[0-9] wedges:'; then 951 /sbin/dkctl $i listwedges \ 952 > "$work_dir/wedges.$i" 2>/dev/null 953 fi 954 ;; 955 esac 956 done 957 fi 958 959 # if raidctl is available, generate raidctls for: raid 960 if [ -x /sbin/raidctl ]; then 961 disks=$(iostat -x | awk 'NR > 1 && $1 ~ /^raid/ { print $1; }') 962 for i in $disks; do 963 /sbin/raidctl -G $i > "$work_dir/raidconf.$i" \ 964 2>/dev/null 965 done 966 fi 967 968 # append list of new disklabels, fdisks and wedges 969 ls -1d $work_dir/disklabel.* $work_dir/fdisk.* $work_dir/wedges.* \ 970 $work_dir/raidconf.* 2>/dev/null | 971 egrep -v '\.(backup|current)(,v)?$' >> $LABELS 972 CHANGELIST="$LABELS $CHANGELIST" 973 fi 974 975 if checkyesno check_lvm; then 976 # generate list of existing LVM elements Physical Volumes, 977 # Volume Groups and Logical Volumes. 978 if [ -x /sbin/lvm ]; then 979 lvm pvdisplay -m >"$work_dir/lvm.pv" 2>/dev/null 980 lvm vgdisplay -m >"$work_dir/lvm.vg" 2>/dev/null 981 lvm lvdisplay -m >"$work_dir/lvm.lv" 2>/dev/null 982 fi 983 ls -1d $work_dir/lvm.* 2>/dev/null | 984 egrep -v '\.(backup|current)(,v)?$'>> $LVM_LABELS 985 CHANGELIST="$CHANGELIST $LVM_LABELS" 986 fi 987 988 # Check for changes in the list of installed pkgs 989 # 990 if checkyesno check_pkgs && have_pkgs; then 991 pkgs=$work_dir/pkgs 992 migrate_file "$backup_dir/pkgs" "$pkgs" 993 pkg_dbdir=$(${pkg_admin} config-var PKG_DBDIR) 994 : ${pkg_dbdir:=/var/db/pkg} 995 ( cd $pkg_dbdir 996 $pkg_info | sort 997 echo "" 998 find . \( -name +REQUIRED_BY -o -name +CONTENTS \) -print0 | 999 xargs -0 ls -ldgTq | sort -t. +1 | sed -e 's, \./, ,' 1000 ) > $pkgs 1001 echo "$pkgs" > $PKGS 1002 CHANGELIST="$PKGS $CHANGELIST" 1003 fi 1004 1005 # List of files that get backed up and checked for any modifications. 1006 # Any changes cause the files to rotate. 1007 # 1008 if checkyesno check_changelist ; then 1009 mtree -D -k type -f $SPECIALSPEC -E exclude | 1010 sed '/^type=file/!d ; s/type=file \.//' | unvis > $CHANGEFILES 1011 1012 ( 1013 # Add other files which might dynamically exist: 1014 # /etc/ifconfig.* 1015 # /etc/raid*.conf 1016 # /etc/rc.d/* 1017 # /etc/rc.conf.d/* 1018 # 1019 echo "/etc/ifconfig.*" 1020 echo "/etc/raid*.conf" 1021 echo "/etc/rc.d/*" 1022 echo "/etc/rc.conf.d/*" 1023 echo "/etc/lvm/backup/*" 1024 echo "/etc/lvm/archive/*" 1025 1026 # Add /etc/changelist 1027 # 1028 if [ -s /etc/changelist ]; then 1029 grep -v '^#' /etc/changelist 1030 fi 1031 ) | while read file; do 1032 case "$file" in 1033 *[\*\?\[]*) # If changelist line is a glob ... 1034 # ... expand possible backup files 1035 # 1036 ls -1d $backup_dir/${file}.current 2>/dev/null \ 1037 | sed "s,^$backup_dir/,, ; s,\.current$,," 1038 1039 # ... expand possible files 1040 # 1041 ls -1d $file 2>/dev/null 1042 ;; 1043 *) 1044 # Otherwise, just print the filename 1045 echo $file 1046 ;; 1047 esac 1048 done >> $CHANGEFILES 1049 CHANGELIST="$CHANGEFILES $CHANGELIST" 1050 fi 1051 1052 # Special case backups, including the master password file and 1053 # ssh private host keys. The normal backup mechanisms for 1054 # $check_changelist (see below) also print out the actual file 1055 # differences and we don't want to do that for these files 1056 # 1057 echo $MP > $TMP1 # always add /etc/master.passwd 1058 mtree -D -k type -f $SPECIALSPEC -I nodiff | 1059 sed '/^type=file/!d ; s/type=file \.//' | unvis >> $TMP1 1060 grep -v '^$' $TMP1 | sort -u > $TMP2 1061 1062 while read file; do 1063 backup_and_diff "$file" no 1064 done < $TMP2 1065 1066 1067 if [ -n "$CHANGELIST" ]; then 1068 grep -h -v '^$' $CHANGELIST | sort -u > $TMP1 1069 comm -23 $TMP1 $TMP2 | while read file; do 1070 backup_and_diff "$file" yes 1071 done 1072 fi 1073 1074 if have_pkgs; then 1075 if checkyesno check_pkg_vulnerabilities; then 1076 ${pkg_admin} ${_compat_K_flag} audit >${OUTPUT} 2>&1 1077 if [ -s ${OUTPUT} ]; then 1078 printf "\nInstalled vulnerable packages:\n" 1079 cat ${OUTPUT} 1080 fi 1081 fi 1082 1083 if checkyesno check_pkg_signatures; then 1084 ${pkg_admin} ${_compat_K_flag} check >${OUTPUT} 2>&1 1085 if [ $? -ne 0 ]; then 1086 printf "\nFiles with invalid signatures:\n" 1087 cat ${OUTPUT} 1088 fi 1089 fi 1090 fi 1091 1092 if [ -f /etc/security.local ]; then 1093 . /etc/security.local > $OUTPUT 2>&1 1094 if [ -s $OUTPUT ] ; then 1095 printf "\nRunning /etc/security.local:\n" 1096 cat $OUTPUT 1097 fi 1098 fi 1099
Indexes created Mon Sep 29 21:09:56 GMT 2025