security revision 1.111
1 #!/bin/sh - 2 # 3 # $NetBSD: security,v 1.111 2012/04/05 09:09:27 spz 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 25 # Set reasonable defaults (if they're not set in security.conf) 26 # 27 backup_dir=${backup_dir:-/var/backups} 28 max_loginlen=${max_loginlen:-8} 29 max_grouplen=${max_grouplen:-8} 30 pkg_info=${pkg_info:-/usr/sbin/pkg_info} 31 32 # Other configurable variables 33 # 34 special_files="/etc/mtree/special /etc/mtree/special.local" 35 MP=/etc/master.passwd 36 CHANGELIST="" 37 work_dir=$backup_dir/work 38 39 if [ ! -d "$work_dir" ]; then 40 mkdir -p "$work_dir" 41 fi 42 43 SECUREDIR=$(mktemp -d -t _securedir) || exit 1 44 45 trap "/bin/rm -rf $SECUREDIR ; exit 0" EXIT INT QUIT PIPE 46 47 if ! cd "$SECUREDIR"; then 48 echo "Can not cd to $SECUREDIR". 49 exit 1 50 fi 51 52 ERR=err.$$ 53 TMP1=tmp1.$$ 54 TMP2=tmp2.$$ 55 MPBYUID=mpbyuid.$$ 56 MPBYPATH=mpbypath.$$ 57 LIST=list.$$ 58 OUTPUT=output.$$ 59 LABELS=labels.$$ 60 LVM_LABELS=lvm.$$ 61 PKGS=pkgs.$$ 62 CHANGEFILES=changefiles.$$ 63 SPECIALSPEC=specialspec.$$ 64 65 if [ -n "${pkgdb_dir}" ]; then 66 echo "WARNING: Setting pkgdb_dir in security.conf(5) is deprecated" 67 echo "WARNING: Please define PKG_DBDIR in pkg_install.conf(5) instead" 68 _compat_K_flag="-K ${pkgdb_dir}" 69 fi 70 71 have_pkgs() { 72 $pkg_info ${_compat_K_flag} -q -E '*' 73 } 74 75 # migrate_file old new 76 # Determine if the "${old}" path name needs to be migrated to the 77 # "${new}" path. Also checks if "${old}.current" needs migrating, 78 # and if so, migrate it and possibly "${old}.current,v" and 79 # "${old}.backup". 80 # 81 migrate_file() 82 { 83 _old=$1 84 _new=$2 85 if [ -z "$_old" -o -z "$_new" ]; then 86 err 3 "USAGE: migrate_file old new" 87 fi 88 if [ ! -d "${_new%/*}" ]; then 89 mkdir -p "${_new%/*}" 90 fi 91 if [ -f "${_old}" -a ! -f "${_new}" ]; then 92 echo "==> migrating ${_old}" 93 echo " to ${_new}" 94 mv "${_old}" "${_new}" 95 fi 96 if [ -f "${_old}.current" -a ! -f "${_new}.current" ]; then 97 echo "==> migrating ${_old}.current" 98 echo " to ${_new}.current" 99 mv "${_old}.current" "${_new}.current" 100 if [ -f "${_old}.current,v" -a ! -f "${_new}.current,v" ]; then 101 echo "==> migrating ${_old}.current,v" 102 echo " to ${_new}.current,v" 103 mv "${_old}.current,v" "${_new}.current,v" 104 fi 105 if [ -f "${_old}.backup" -a ! -f "${_new}.backup" ]; then 106 echo "==> migrating ${_old}.backup" 107 echo " to ${_new}.backup" 108 mv "${_old}.backup" "${_new}.backup" 109 fi 110 fi 111 } 112 113 114 # backup_and_diff file printdiff 115 # Determine if file needs backing up, and if so, do it. 116 # If printdiff is yes, display the diffs, otherwise 117 # just print a message saying "[changes omitted]". 118 # 119 backup_and_diff() 120 { 121 _file=$1 122 _printdiff=$2 123 if [ -z "$_file" -o -z "$_printdiff" ]; then 124 err 3 "USAGE: backup_and_diff file printdiff" 125 fi 126 ! checkyesno _printdiff 127 _printdiff=$? 128 129 _old=$backup_dir/${_file##*/} 130 case "$_file" in 131 $work_dir/*) 132 _new=$_file 133 migrate_file "$backup_dir/$_old" "$_new" 134 migrate_file "$_old" "$_new" 135 ;; 136 *) 137 _new=$backup_dir/$_file 138 migrate_file "$_old" "$_new" 139 ;; 140 esac 141 CUR=${_new}.current 142 BACK=${_new}.backup 143 if [ -f $_file ]; then 144 if [ -f $CUR ] ; then 145 if [ "$_printdiff" -ne 0 ]; then 146 diff ${diff_options} $CUR $_file > $OUTPUT 147 else 148 if ! cmp -s $CUR $_file; then 149 echo "[changes omitted]" 150 fi > $OUTPUT 151 fi 152 if [ -s $OUTPUT ] ; then 153 printf \ 154 "\n======\n%s diffs (OLD < > NEW)\n======\n" $_file 155 cat $OUTPUT 156 backup_file update $_file $CUR $BACK 157 fi 158 else 159 printf "\n======\n%s added\n======\n" $_file 160 if [ "$_printdiff" -ne 0 ]; then 161 diff ${diff_options} /dev/null $_file 162 else 163 echo "[changes omitted]" 164 fi 165 backup_file add $_file $CUR $BACK 166 fi 167 else 168 if [ -f $CUR ]; then 169 printf "\n======\n%s removed\n======\n" $_file 170 if [ "$_printdiff" -ne 0 ]; then 171 diff ${diff_options} $CUR /dev/null 172 else 173 echo "[changes omitted]" 174 fi 175 backup_file remove $_file $CUR $BACK 176 fi 177 fi 178 } 179 180 181 # These are used several times. 182 # 183 awk -F: '!/^\+/ { print $1 " " $3 }' $MP | sort -k2n > $MPBYUID 184 awk -F: '{ print $1 " " $9 }' $MP | sort -k2 > $MPBYPATH 185 for file in $special_files; do 186 [ -s $file ] && cat $file 187 done | mtree -CM -k all > $SPECIALSPEC || exit 1 188 189 190 # Check the master password file syntax. 191 # 192 if checkyesno check_passwd; then 193 # XXX: the sense of permit_star is reversed; the code works as 194 # implemented, but usage needs to be negated. 195 checkyesno check_passwd_permit_star && permit_star=0 || permit_star=1 196 checkyesno check_passwd_permit_nonalpha \ 197 && permit_nonalpha=1 || permit_nonalpha=0 198 199 awk -v "len=$max_loginlen" \ 200 -v "nowarn_shells_list=$check_passwd_nowarn_shells" \ 201 -v "nowarn_users_list=$check_passwd_nowarn_users" \ 202 -v "permit_star=$permit_star" \ 203 -v "permit_nonalpha=$permit_nonalpha" \ 204 ' 205 BEGIN { 206 while ( getline < "/etc/shells" > 0 ) { 207 if ($0 ~ /^\#/ || $0 ~ /^$/ ) 208 continue; 209 shells[$1]++; 210 } 211 split(nowarn_shells_list, a); 212 for (i in a) nowarn_shells[a[i]]++; 213 split(nowarn_users_list, a); 214 for (i in a) nowarn_users[a[i]]++; 215 uid0_users_list="root toor" 216 split(uid0_users_list, a); 217 for (i in a) uid0_users[a[i]]++; 218 FS=":"; 219 } 220 221 { 222 if ($0 ~ /^[ ]*$/) { 223 printf "Line %d is a blank line.\n", NR; 224 next; 225 } 226 227 # NIS compat entry? 228 compatline = $1 ~ "^[\\+-]"; 229 if (compatline) { 230 if ($1 == "+" && NF == 1) { 231 next; 232 } 233 sub("^.", "", $1); 234 } 235 if (NF != 10) 236 printf "Line %d has the wrong number of fields.\n", NR; 237 if (compatline) { 238 if ($3 == 0) 239 printf "Line %d includes entries with uid 0.\n", 240 NR; 241 if ($1 == "") 242 next; 243 } 244 if (!permit_nonalpha && 245 $1 !~ /^[_A-Za-z0-9]([-A-Za-z0-9_.]*[A-Za-z0-9])*$/) 246 printf "Login %s has non-alphanumeric characters.\n", 247 $1; 248 if (length($1) > len) 249 printf "Login %s has more than "len" characters.\n", 250 $1; 251 if ($2 == "" && !compatline && !nowarn_users[$1]) 252 printf "Login %s has no password.\n", $1; 253 if (!nowarn_shells[$10] && !nowarn_users[$1]) { 254 if (length($2) != 13 && 255 length($2) != 20 && 256 $2 !~ /^\$1/ && 257 $2 !~ /^\$2/ && 258 $2 !~ /^\$sha1/ && 259 $2 != "" && 260 (permit_star || $2 != "*") && 261 $2 !~ /^\*[A-z-]+$/ && 262 $1 != "toor") { 263 if ($10 == "" || shells[$10]) 264 printf "Login %s is off but still has "\ 265 "a valid shell (%s)\n", $1, $10; 266 } else if (compatline && $10 == "") { 267 # nothing 268 } else if (! shells[$10]) 269 printf "Login %s does not have a valid "\ 270 "shell (%s)\n", $1, $10; 271 } 272 if ($3 == 0 && !uid0_users[$1] && !nowarn_users[$1]) 273 printf "Login %s has a user id of 0.\n", $1; 274 if ($3 != "" && $3 < 0) 275 printf "Login %s has a negative user id.\n", $1; 276 if ($4 != "" && $4 < 0) 277 printf "Login %s has a negative group id.\n", $1; 278 }' < $MP > $OUTPUT 279 if [ -s $OUTPUT ] ; then 280 printf "\nChecking the $MP file:\n" 281 cat $OUTPUT 282 fi 283 284 awk -F: '{ print $1 }' $MP | sort | uniq -d > $OUTPUT 285 if [ -s $OUTPUT ] ; then 286 printf "\n$MP has duplicate user names.\n" 287 column $OUTPUT 288 fi 289 290 awk -v "permit_dups_list=$check_passwd_permit_dups" \ 291 ' 292 BEGIN { 293 split(permit_dups_list, a); 294 for (i in a) permit_dups[a[i]]++; 295 } 296 { 297 if (!permit_dups[$1]) 298 print $2; 299 }' < $MPBYUID | uniq -d > $TMP2 300 if [ -s $TMP2 ] ; then 301 printf "\n$MP has duplicate user ids.\n" 302 while read uid; do 303 grep -w $uid $MPBYUID 304 done < $TMP2 | column 305 fi 306 fi 307 308 # Check the group file syntax. 309 # 310 if checkyesno check_group; then 311 GRP=/etc/group 312 awk -F: -v "len=$max_grouplen" '{ 313 if ($0 ~ /^[ ]*$/) { 314 printf "Line %d is a blank line.\n", NR; 315 next; 316 } 317 if (NF != 4 && ($1 != "+" || NF != 1)) 318 printf "Line %d has the wrong number of fields.\n", NR; 319 if ($1 == "+" ) { 320 next; 321 } 322 if ($1 !~ /^[_A-Za-z0-9]([-A-Za-z0-9_.]*[A-Za-z0-9])*$/) 323 printf "Group %s has non-alphanumeric characters.\n", 324 $1; 325 if (length($1) > len) 326 printf "Group %s has more than "len" characters.\n", $1; 327 if ($3 !~ /[0-9]*/) 328 printf "Login %s has a negative group id.\n", $1; 329 }' < $GRP > $OUTPUT 330 if [ -s $OUTPUT ] ; then 331 printf "\nChecking the $GRP file:\n" 332 cat $OUTPUT 333 fi 334 335 awk -F: '{ print $1 }' $GRP | sort | uniq -d > $OUTPUT 336 if [ -s $OUTPUT ] ; then 337 printf "\n$GRP has duplicate group names.\n" 338 column $OUTPUT 339 fi 340 fi 341 342 # Check for root paths, umask values in startup files. 343 # The check for the root paths is problematical -- it's likely to fail 344 # in other environments. Once the shells have been modified to warn 345 # of '.' in the path, the path tests should go away. 346 # 347 if checkyesno check_rootdotfiles; then 348 rhome=~root 349 umaskset=no 350 list="/etc/csh.cshrc /etc/csh.login ${rhome}/.cshrc ${rhome}/.login" 351 for i in $list ; do 352 if [ -f $i ] ; then 353 if egrep '^[ \t]*umask[ \t]+[0-7]+' $i > /dev/null ; 354 then 355 umaskset=yes 356 fi 357 # Double check the umask value itself; ensure that 358 # both the group and other write bits are set. 359 # 360 egrep '^[ \t]*umask[ \t]+[0-7]+' $i | 361 awk '{ 362 if ($2 ~ /^.$/ || $2 ~! /[^2367].$/) { 363 print "\tRoot umask is group writable" 364 } 365 if ($2 ~ /[^2367]$/) { 366 print "\tRoot umask is other writable" 367 } 368 }' | sort -u 369 SAVE_PATH=$PATH 370 unset PATH 371 /bin/csh -f -s << end-of-csh > /dev/null 2>&1 372 source $i 373 /bin/ls -ldgT \$path > $TMP1 374 end-of-csh 375 export PATH=$SAVE_PATH 376 awk '{ 377 if ($10 ~ /^\.$/) { 378 print "\tThe root path includes ."; 379 next; 380 } 381 } 382 $1 ~ /^d....w/ \ 383 { print "\tRoot path directory " $10 " is group writable." } \ 384 $1 ~ /^d.......w/ \ 385 { print "\tRoot path directory " $10 " is other writable." }' \ 386 < $TMP1 387 fi 388 done > $OUTPUT 389 if [ $umaskset = "no" -o -s $OUTPUT ] ; then 390 printf "\nChecking root csh paths, umask values:\n$list\n\n" 391 if [ -s $OUTPUT ]; then 392 cat $OUTPUT 393 fi 394 if [ $umaskset = "no" ] ; then 395 printf "\tRoot csh startup files do not set the umask.\n" 396 fi 397 fi 398 399 umaskset=no 400 list="/etc/profile ${rhome}/.profile" 401 for i in $list; do 402 if [ -f $i ] ; then 403 if egrep umask $i > /dev/null ; then 404 umaskset=yes 405 fi 406 egrep umask $i | 407 awk '$2 ~ /^.$/ || $2 ~ /[^2367].$/ \ 408 { print "\tRoot umask is group writable" } \ 409 $2 ~ /[^2367]$/ \ 410 { print "\tRoot umask is other writable" }' 411 SAVE_PATH=$PATH 412 unset PATH 413 /bin/sh << end-of-sh > /dev/null 2>&1 414 . $i 415 list=\$(echo \$PATH | /usr/bin/sed -e \ 416 's/^:/.:/;s/:$/:./;s/::/:.:/g;s/:/ /g') 417 /bin/ls -ldgT \$list > $TMP1 418 end-of-sh 419 export PATH=$SAVE_PATH 420 awk '{ 421 if ($10 ~ /^\.$/) { 422 print "\tThe root path includes ."; 423 next; 424 } 425 } 426 $1 ~ /^d....w/ \ 427 { print "\tRoot path directory " $10 " is group writable." } \ 428 $1 ~ /^d.......w/ \ 429 { print "\tRoot path directory " $10 " is other writable." }' \ 430 < $TMP1 431 432 fi 433 done > $OUTPUT 434 if [ $umaskset = "no" -o -s $OUTPUT ] ; then 435 printf "\nChecking root sh paths, umask values:\n$list\n" 436 if [ -s $OUTPUT ]; then 437 cat $OUTPUT 438 fi 439 if [ $umaskset = "no" ] ; then 440 printf "\tRoot sh startup files do not set the umask.\n" 441 fi 442 fi 443 fi 444 445 # Root and uucp should both be in /etc/ftpusers. 446 # 447 if checkyesno check_ftpusers; then 448 list="uucp "$(awk '$2 == 0 { print $1 }' $MPBYUID) 449 for i in $list; do 450 if /usr/libexec/ftpd -C $i ; then 451 printf "\t$i is not denied\n" 452 fi 453 done > $OUTPUT 454 if [ -s $OUTPUT ]; then 455 printf "\nChecking the /etc/ftpusers configuration:\n" 456 cat $OUTPUT 457 fi 458 fi 459 460 # Uudecode should not be in the /etc/mail/aliases file. 461 # 462 if checkyesno check_aliases; then 463 for f in /etc/mail/aliases /etc/aliases; do 464 if [ -f $f ] && egrep '^[^#]*(uudecode|decode).*\|' $f; then 465 printf "\nEntry for uudecode in $f file.\n" 466 fi 467 done 468 fi 469 470 # Files that should not have + signs. 471 # 472 if checkyesno check_rhosts; then 473 list="/etc/hosts.equiv /etc/hosts.lpd" 474 for f in $list ; do 475 if [ -f $f ] && egrep '\+' $f > /dev/null ; then 476 printf "\nPlus sign in $f file.\n" 477 fi 478 done 479 480 # Check for special users with .rhosts files. Only root and toor should 481 # have .rhosts files. Also, .rhosts files should not have plus signs. 482 awk -F: '$1 != "root" && $1 != "toor" && \ 483 ($3 < 100 || $1 == "ftp" || $1 == "uucp") \ 484 { print $1 " " $9 }' $MP | 485 sort -k2 | 486 while read uid homedir; do 487 if [ -f ${homedir}/.rhosts ] ; then 488 rhost=$(ls -ldgT ${homedir}/.rhosts) 489 printf -- "$uid: $rhost\n" 490 fi 491 done > $OUTPUT 492 if [ -s $OUTPUT ] ; then 493 printf "\nChecking for special users with .rhosts files.\n" 494 cat $OUTPUT 495 fi 496 497 while read uid homedir; do 498 if [ -f ${homedir}/.rhosts -a -r ${homedir}/.rhosts ] && \ 499 cat -f ${homedir}/.rhosts | egrep '\+' > /dev/null ; then 500 printf -- "$uid: + in .rhosts file.\n" 501 fi 502 done < $MPBYPATH > $OUTPUT 503 if [ -s $OUTPUT ] ; then 504 printf "\nChecking .rhosts files syntax.\n" 505 cat $OUTPUT 506 fi 507 fi 508 509 # Check home directories. Directories should not be owned by someone else 510 # or writable. 511 # 512 if checkyesno check_homes; then 513 checkyesno check_homes_permit_usergroups && \ 514 permit_usergroups=1 || permit_usergroups=0 515 while read uid homedir; do 516 if [ -d ${homedir}/ ] ; then 517 file=$(ls -ldgT ${homedir}) 518 printf -- "$uid $file\n" 519 fi 520 done < $MPBYPATH | 521 awk -v "usergroups=$permit_usergroups" ' 522 $1 != $4 && $4 != "root" \ 523 { print "user " $1 " home directory is owned by " $4 } 524 $2 ~ /^d....w/ && (!usergroups || $5 != $1) \ 525 { print "user " $1 " home directory is group writable" } 526 $2 ~ /^d.......w/ \ 527 { print "user " $1 " home directory is other writable" }' \ 528 > $OUTPUT 529 if [ -s $OUTPUT ] ; then 530 printf "\nChecking home directories.\n" 531 cat $OUTPUT 532 fi 533 534 # Files that should not be owned by someone else or readable. 535 list=".Xauthority .netrc .ssh/id_dsa .ssh/id_rsa .ssh/identity" 536 while read uid homedir; do 537 for f in $list ; do 538 file=${homedir}/${f} 539 if [ -f $file ] ; then 540 printf -- "$uid $f $(ls -ldgT $file)\n" 541 fi 542 done 543 done < $MPBYPATH | 544 awk -v "usergroups=$permit_usergroups" ' 545 $1 != $5 && $5 != "root" \ 546 { print "user " $1 " " $2 " file is owned by " $5 } 547 $3 ~ /^-...r/ && (!usergroups || $6 != $1) \ 548 { print "user " $1 " " $2 " file is group readable" } 549 $3 ~ /^-......r/ \ 550 { print "user " $1 " " $2 " file is other readable" } 551 $3 ~ /^-....w/ && (!usergroups || $6 != $1) \ 552 { print "user " $1 " " $2 " file is group writable" } 553 $3 ~ /^-.......w/ \ 554 { print "user " $1 " " $2 " file is other writable" }' \ 555 > $OUTPUT 556 557 # Files that should not be owned by someone else or writable. 558 list=".bash_history .bash_login .bash_logout .bash_profile .bashrc \ 559 .cshrc .emacs .exrc .forward .history .k5login .klogin .login \ 560 .logout .profile .qmail .rc_history .rhosts .shosts ssh .tcshrc \ 561 .twmrc .xinitrc .xsession .ssh/authorized_keys \ 562 .ssh/authorized_keys2 .ssh/config .ssh/id_dsa.pub \ 563 .ssh/id_rsa.pub .ssh/identity.pub .ssh/known_hosts \ 564 .ssh/known_hosts2" 565 while read uid homedir; do 566 for f in $list ; do 567 file=${homedir}/${f} 568 if [ -f $file ] ; then 569 printf -- "$uid $f $(ls -ldgT $file)\n" 570 fi 571 done 572 done < $MPBYPATH | 573 awk -v "usergroups=$permit_usergroups" ' 574 $1 != $5 && $5 != "root" \ 575 { print "user " $1 " " $2 " file is owned by " $5 } 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 if [ -s $OUTPUT ] ; then 582 printf "\nChecking dot files.\n" 583 cat $OUTPUT 584 fi 585 fi 586 587 # Mailboxes should be owned by user and unreadable. 588 # 589 if checkyesno check_varmail; then 590 ls -lA /var/mail | \ 591 awk ' NR == 1 { next; } 592 $9 ~ /^\./ {next; } 593 $3 != $9 { 594 print "user " $9 " mailbox is owned by " $3 595 } 596 $1 != "-rw-------" { 597 print "user " $9 " mailbox is " $1 ", group " $4 598 }' > $OUTPUT 599 if [ -s $OUTPUT ] ; then 600 printf "\nChecking mailbox ownership.\n" 601 cat $OUTPUT 602 fi 603 fi 604 605 # NFS exports shouldn't be globally exported 606 # 607 if checkyesno check_nfs && [ -f /etc/exports ]; then 608 awk '{ 609 # ignore comments and blank lines 610 if ($0 ~ /^\#/ || $0 ~ /^$/ ) 611 next; 612 # manage line continuation 613 while ($NF ~ /^\\$/) { 614 $NF = ""; 615 line = $0 ""; 616 getline; 617 $0 = line $0 ""; 618 } 619 620 delete dir; 621 readonly = ndir = 0; 622 for (i = 1; i <= NF; ++i) { 623 if ($i ~ /^\//) dir[ndir++] = $i; 624 else if ($i ~ /^-/) { 625 if ($i ~ /^-(ro|o)$/) readonly = 1; 626 if ($i ~ /^-network/) next; 627 } 628 else next; 629 } 630 if (readonly) 631 for (item in dir) 632 rodir[nrodir++] = dir[item]; 633 else 634 for (item in dir) 635 rwdir[nrwdir++] = dir[item]; 636 637 } 638 639 END { 640 if (nrodir) { 641 printf("Globally exported file system%s, read-only:\n", 642 nrodir > 1 ? "s" : ""); 643 for (item in rodir) 644 printf("\t%s\n", rodir[item]); 645 } 646 if (nrwdir) { 647 printf("Globally exported file system%s, read-write:\n", 648 nrwdir > 1 ? "s" : ""); 649 for (item in rwdir) 650 printf("\t%s\n", rwdir[item]); 651 } 652 }' < /etc/exports > $OUTPUT 653 if [ -s $OUTPUT ] ; then 654 printf "\nChecking for globally exported file systems.\n" 655 cat $OUTPUT 656 fi 657 fi 658 659 # Display any changes in setuid files and devices. 660 # 661 if checkyesno check_devices; then 662 > $ERR 663 ( 664 665 # Convert check_devices_ignore_fstypes="foo !bar bax" 666 # into "-fstype foo -o ! -fstype bar -o -fstype bax" 667 # and check_devices_ignore_paths="/foo !/bar /bax" 668 # into " -path /foo -o ! -path /bar -o -path /bax" 669 # 670 ignexpr=$(\ 671 echo $check_devices_ignore_fstypes | \ 672 sed -e's/\(!*\)\([^[:space:]]\{1,\}\)/-o \1 -fstype \2/g' ; \ 673 echo $check_devices_ignore_paths | \ 674 sed -e's/\(!*\)\([^[:space:]]\{1,\}\)/-o \1 -path \2/g' \ 675 ) 676 677 # Massage the expression into ( $ignexpr ) -a -prune -o 678 if [ -n "${ignexpr}" ]; then 679 ignexpr=$(\ 680 echo $ignexpr | \ 681 sed -e 's/^-o /( /' \ 682 -e 's/$/ ) -a -prune -o/' \ 683 ) 684 fi 685 686 find / $ignexpr \ 687 \( \( -perm -u+s -a ! -type d \) -o \ 688 \( -perm -g+s -a ! -type d \) -o \ 689 -type b -o -type c \) -print0 | \ 690 xargs -0 ls -ldgTq | sort +9 > $LIST 691 692 ) 2> $OUTPUT 693 694 # Display any errors that occurred during system file walk. 695 if [ -s $OUTPUT ] ; then 696 printf "Setuid/device find errors:\n" >> $ERR 697 cat $OUTPUT >> $ERR 698 printf "\n" >> $ERR 699 fi 700 701 # Display any changes in the setuid file list. 702 egrep -v '^[bc]' $LIST > $TMP1 703 if [ -s $TMP1 ] ; then 704 # Check to make sure uudecode isn't setuid. 705 if grep -w uudecode $TMP1 > /dev/null ; then 706 printf "\nUudecode is setuid.\n" >> $ERR 707 fi 708 709 file=$work_dir/setuid 710 migrate_file "$backup_dir/setuid" "$file" 711 CUR=${file}.current 712 BACK=${file}.backup 713 if [ -s $CUR ] ; then 714 if cmp -s $CUR $TMP1 ; then 715 : 716 else 717 > $TMP2 718 join -110 -210 -v2 $CUR $TMP1 > $OUTPUT 719 if [ -s $OUTPUT ] ; then 720 printf "Setuid additions:\n" >> $ERR 721 tee -a $TMP2 < $OUTPUT >> $ERR 722 printf "\n" >> $ERR 723 fi 724 725 join -110 -210 -v1 $CUR $TMP1 > $OUTPUT 726 if [ -s $OUTPUT ] ; then 727 printf "Setuid deletions:\n" >> $ERR 728 tee -a $TMP2 < $OUTPUT >> $ERR 729 printf "\n" >> $ERR 730 fi 731 732 sort -k10 $TMP2 $CUR $TMP1 | \ 733 sed -e 's/[ ][ ]*/ /g' | \ 734 uniq -u > $OUTPUT 735 if [ -s $OUTPUT ] ; then 736 printf "Setuid changes:\n" >> $ERR 737 column -t $OUTPUT >> $ERR 738 printf "\n" >> $ERR 739 fi 740 741 backup_file update $TMP1 $CUR $BACK 742 fi 743 else 744 printf "Setuid additions:\n" >> $ERR 745 column -t $TMP1 >> $ERR 746 printf "\n" >> $ERR 747 backup_file add $TMP1 $CUR $BACK 748 fi 749 fi 750 751 # Check for block and character disk devices that are readable or 752 # writable or not owned by root.operator. 753 >$TMP1 754 DISKLIST="ccd ch hk hp ld md ra raid rb rd rl rx \ 755 sd se ss uk up vnd wd xd xy" 756 # DISKLIST="$DISKLIST ct mt st wt" 757 for i in $DISKLIST; do 758 egrep "^b.*/${i}[0-9][0-9]*[a-p]$" $LIST >> $TMP1 759 egrep "^c.*/r${i}[0-9][0-9]*[a-p]$" $LIST >> $TMP1 760 done 761 762 awk '$3 != "root" || $4 != "operator" || $1 !~ /.rw-r-----/ \ 763 { printf "Disk %s is user %s, group %s, permissions %s.\n", \ 764 $11, $3, $4, $1; }' < $TMP1 > $OUTPUT 765 if [ -s $OUTPUT ] ; then 766 printf "\nChecking disk ownership and permissions.\n" >> $ERR 767 cat $OUTPUT >> $ERR 768 printf "\n" >> $ERR 769 fi 770 771 # Display any changes in the device file list. 772 egrep '^[bc]' $LIST | sort -k11 > $TMP1 773 if [ -s $TMP1 ] ; then 774 file=$work_dir/device 775 migrate_file "$backup_dir/device" "$file" 776 CUR=${file}.current 777 BACK=${file}.backup 778 779 if [ -s $CUR ] ; then 780 if cmp -s $CUR $TMP1 ; then 781 : 782 else 783 > $TMP2 784 join -111 -211 -v2 $CUR $TMP1 > $OUTPUT 785 if [ -s $OUTPUT ] ; then 786 printf "Device additions:\n" >> $ERR 787 tee -a $TMP2 < $OUTPUT >> $ERR 788 printf "\n" >> $ERR 789 fi 790 791 join -111 -211 -v1 $CUR $TMP1 > $OUTPUT 792 if [ -s $OUTPUT ] ; then 793 printf "Device deletions:\n" >> $ERR 794 tee -a $TMP2 < $OUTPUT >> $ERR 795 printf "\n" >> $ERR 796 fi 797 798 # Report any block device change. Ignore 799 # character devices, only the name is 800 # significant. 801 cat $TMP2 $CUR $TMP1 | \ 802 sed -e '/^c/d' | \ 803 sort -k11 | \ 804 sed -e 's/[ ][ ]*/ /g' | \ 805 uniq -u > $OUTPUT 806 if [ -s $OUTPUT ] ; then 807 printf "Block device changes:\n" >> $ERR 808 column -t $OUTPUT >> $ERR 809 printf "\n" >> $ERR 810 fi 811 812 backup_file update $TMP1 $CUR $BACK 813 fi 814 else 815 printf "Device additions:\n" >> $ERR 816 column -t $TMP1 >> $ERR 817 printf "\n" >> $ERR 818 backup_file add $TMP1 $CUR $BACK >> $ERR 819 fi 820 fi 821 if [ -s $ERR ] ; then 822 printf "\nChecking setuid files and devices:\n" 823 cat $ERR 824 printf "\n" 825 fi 826 fi 827 828 # Check special files. 829 # Check system binaries. 830 # 831 # Create the mtree tree specifications using: 832 # mtree -cx -pDIR -kmd5,uid,gid,mode,nlink,size,link,time > DIR.secure 833 # chown root:wheel DIR.secure 834 # chmod u+r,go= DIR.secure 835 # 836 # Note, this is not complete protection against Trojan horsed binaries, as 837 # the hacker can modify the tree specification to match the replaced binary. 838 # For details on really protecting yourself against modified binaries, see 839 # the mtree(8) manual page. 840 # 841 if checkyesno check_mtree; then 842 if checkyesno check_mtree_follow_symlinks; then 843 check_mtree_flags="-L" 844 else 845 check_mtree_flags="" 846 fi 847 mtree -e -l -p / $check_mtree_flags -f $SPECIALSPEC 3>&1 >$OUTPUT 2>&3 | 848 grep -v '^mtree: dev/tty: Device not configured$' >&2 849 if [ -s $OUTPUT ]; then 850 printf "\nChecking special files and directories.\n" 851 cat $OUTPUT 852 fi 853 854 for file in /etc/mtree/*.secure; do 855 [ $file = '/etc/mtree/*.secure' ] && continue 856 tree=$(sed -n -e '3s/.* //p' -e 3q $file) 857 mtree $check_mtree_flags -f $file -p $tree > $TMP1 858 if [ -s $TMP1 ]; then 859 printf "\nChecking $tree:\n" 860 cat $TMP1 861 fi 862 done > $OUTPUT 863 if [ -s $OUTPUT ]; then 864 printf "\nChecking system binaries:\n" 865 cat $OUTPUT 866 fi 867 fi 868 869 # Backup disklabels of available disks 870 # 871 if checkyesno check_disklabels; then 872 # migrate old disklabels 873 for file in $(ls -1d $backup_dir/$backup_dir/disklabel.* \ 874 $backup_dir/disklabel.* 2>/dev/null); do 875 migrate_file "$file" "$work_dir/${file##*/}" 876 done 877 878 # generate list of old disklabels, fdisks & wedges and remove them 879 ls -1d $work_dir/disklabel.* $work_dir/fdisk.* $work_dir/wedges.* 2>/dev/null | 880 egrep -v '\.(backup|current)(,v)?$' > $LABELS 881 xargs rm < $LABELS 882 883 # generate disklabels of all disks excluding: cd dk fd md st 884 disks=$(iostat -x | awk 'NR > 1 && $1 !~ /^[cfm]d|dk|st|nfs/ { print $1; }') 885 for i in $disks; do 886 disklabel $i > "$work_dir/disklabel.$i" 2>/dev/null 887 done 888 889 # if fdisk is available, generate fdisks for: ed ld sd wd 890 if [ -x /sbin/fdisk ]; then 891 disks=$(iostat -x | awk 'NR > 1 && $1 ~ /^[elsw]d/ { print $1; }') 892 for i in $disks; do 893 /sbin/fdisk $i > "$work_dir/fdisk.$i" 2>/dev/null 894 done 895 fi 896 897 # if dkctl is available, generate dkctl listwedges for: ed ld sd wd cgd ofdisk ra rl raid 898 if [ -x /sbin/dkctl ]; then 899 disks=$(iostat -x | awk 'NR > 1 && $1 ~ /^[elsw]d|cgd|ofdisk|r[al]|raid/ { print $1; }') 900 for i in $disks; do 901 /sbin/dkctl $i listwedges > "$work_dir/wedges.$i" 2>/dev/null 902 done 903 fi 904 905 # append list of new disklabels, fdisks and wedges 906 ls -1d $work_dir/disklabel.* $work_dir/fdisk.* $work_dir/wedges.* 2>/dev/null | 907 egrep -v '\.(backup|current)(,v)?$' >> $LABELS 908 CHANGELIST="$LABELS $CHANGELIST" 909 fi 910 911 if checkyesno check_lvm; then 912 913 # generate list of existing LVM elements Physical Volumes, Volume Groups and Logical Volumes. 914 if [ -x /sbin/lvm ]; then 915 lvm pvdisplay -m >"$work_dir/lvm.pv" 2>/dev/null 916 lvm vgdisplay -m >"$work_dir/lvm.vg" 2>/dev/null 917 lvm lvdisplay -m >"$work_dir/lvm.lv" 2>/dev/null 918 fi 919 ls -1d $work_dir/lvm.* 2>/dev/null | 920 egrep -v '\.(backup|current)(,v)?$'>> $LVM_LABELS 921 CHANGELIST="$CHANGELIST $LVM_LABELS" 922 fi 923 924 # Check for changes in the list of installed pkgs 925 # 926 if checkyesno check_pkgs && have_pkgs; then 927 pkgs=$work_dir/pkgs 928 migrate_file "$backup_dir/pkgs" "$pkgs" 929 pkg_dbdir=$(pkg_admin config-var PKG_DBDIR) 930 : ${pkg_dbdir:=/var/db/pkg} 931 ( cd $pkg_dbdir 932 $pkg_info | sort 933 echo "" 934 find . \( -name +REQUIRED_BY -o -name +CONTENTS \) -print0 | 935 xargs -0 ls -ldgTq | sort -t. +1 | sed -e 's, \./, ,' 936 ) > $pkgs 937 echo "$pkgs" > $PKGS 938 CHANGELIST="$PKGS $CHANGELIST" 939 fi 940 941 # List of files that get backed up and checked for any modifications. 942 # Any changes cause the files to rotate. 943 # 944 if checkyesno check_changelist ; then 945 mtree -D -k type -f $SPECIALSPEC -E exclude | 946 sed '/^type=file/!d ; s/type=file \.//' | unvis > $CHANGEFILES 947 948 ( 949 # Add other files which might dynamically exist: 950 # /etc/ifconfig.* 951 # /etc/raid*.conf 952 # /etc/rc.d/* 953 # /etc/rc.conf.d/* 954 # 955 echo "/etc/ifconfig.*" 956 echo "/etc/raid*.conf" 957 echo "/etc/rc.d/*" 958 echo "/etc/rc.conf.d/*" 959 echo "/etc/lvm/backup/*" 960 echo "/etc/lvm/archive/*" 961 962 # Add /etc/changelist 963 # 964 if [ -s /etc/changelist ]; then 965 grep -v '^#' /etc/changelist 966 fi 967 ) | while read file; do 968 case "$file" in 969 *[\*\?\[]*) # If changelist line is a glob ... 970 # ... expand possible backup files 971 # 972 ls -1d $(echo $backup_dir/${file}.current) 2>/dev/null \ 973 | sed "s,^$backup_dir/,, ; s,\.current$,," 974 975 # ... expand possible files 976 # 977 ls -1d $(echo $file) 2>/dev/null 978 ;; 979 *) 980 # Otherwise, just print the filename 981 echo $file 982 ;; 983 esac 984 done >> $CHANGEFILES 985 CHANGELIST="$CHANGEFILES $CHANGELIST" 986 fi 987 988 # Special case backups, including the master password file and 989 # ssh private host keys. The normal backup mechanisms for 990 # $check_changelist (see below) also print out the actual file 991 # differences and we don't want to do that for these files 992 # 993 echo $MP > $TMP1 # always add /etc/master.passwd 994 mtree -D -k type -f $SPECIALSPEC -I nodiff | 995 sed '/^type=file/!d ; s/type=file \.//' | unvis >> $TMP1 996 grep -v '^$' $TMP1 | sort -u > $TMP2 997 998 while read file; do 999 backup_and_diff "$file" no 1000 done < $TMP2 1001 1002 1003 if [ -n "$CHANGELIST" ]; then 1004 grep -h -v '^$' $CHANGELIST | sort -u > $TMP1 1005 comm -23 $TMP1 $TMP2 | while read file; do 1006 backup_and_diff "$file" yes 1007 done 1008 fi 1009 1010 if have_pkgs; then 1011 if checkyesno check_pkg_vulnerabilities; then 1012 pkg_admin ${_compat_K_flag} audit >${OUTPUT} 2>&1 1013 if [ -s ${OUTPUT} ]; then 1014 printf "\nInstalled vulnerable packages:\n" 1015 cat ${OUTPUT} 1016 fi 1017 fi 1018 1019 if checkyesno check_pkg_signatures; then 1020 pkg_admin ${_compat_K_flag} check >${OUTPUT} 2>&1 1021 if [ $? -ne 0 ]; then 1022 printf "\nFiles with invalid signatures:\n" 1023 cat ${OUTPUT} 1024 fi 1025 fi 1026 fi 1027 1028 if [ -f /etc/security.local ]; then 1029 . /etc/security.local > $OUTPUT 2>&1 1030 if [ -s $OUTPUT ] ; then 1031 printf "\nRunning /etc/security.local:\n" 1032 cat $OUTPUT 1033 fi 1034 fi 1035
Indexes created Sun Sep 28 12:09:53 GMT 2025