security revision 1.112
1 #!/bin/sh - 2 # 3 # $NetBSD: security,v 1.112 2013/05/01 05:36:25 agc 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=${max_grouplen:-8} 33 pkg_info=${pkg_info:-/usr/sbin/pkg_info} 34 35 # Other configurable variables 36 # 37 special_files="/etc/mtree/special /etc/mtree/special.local" 38 MP=/etc/master.passwd 39 CHANGELIST="" 40 work_dir=$backup_dir/work 41 42 if [ ! -d "$work_dir" ]; then 43 mkdir -p "$work_dir" 44 fi 45 46 SECUREDIR=$(mktemp -d -t _securedir) || exit 1 47 48 trap "/bin/rm -rf $SECUREDIR ; exit 0" EXIT INT QUIT PIPE 49 50 if ! cd "$SECUREDIR"; then 51 echo "Can not cd to $SECUREDIR". 52 exit 1 53 fi 54 55 ERR=err.$$ 56 TMP1=tmp1.$$ 57 TMP2=tmp2.$$ 58 MPBYUID=mpbyuid.$$ 59 MPBYPATH=mpbypath.$$ 60 LIST=list.$$ 61 OUTPUT=output.$$ 62 LABELS=labels.$$ 63 LVM_LABELS=lvm.$$ 64 PKGS=pkgs.$$ 65 CHANGEFILES=changefiles.$$ 66 SPECIALSPEC=specialspec.$$ 67 68 if [ -n "${pkgdb_dir}" ]; then 69 echo "WARNING: Setting pkgdb_dir in security.conf(5) is deprecated" 70 echo "WARNING: Please define PKG_DBDIR in pkg_install.conf(5) instead" 71 _compat_K_flag="-K ${pkgdb_dir}" 72 fi 73 74 have_pkgs() { 75 $pkg_info ${_compat_K_flag} -q -E '*' 76 } 77 78 # migrate_file old new 79 # Determine if the "${old}" path name needs to be migrated to the 80 # "${new}" path. Also checks if "${old}.current" needs migrating, 81 # and if so, migrate it and possibly "${old}.current,v" and 82 # "${old}.backup". 83 # 84 migrate_file() 85 { 86 _old=$1 87 _new=$2 88 if [ -z "$_old" -o -z "$_new" ]; then 89 err 3 "USAGE: migrate_file old new" 90 fi 91 if [ ! -d "${_new%/*}" ]; then 92 mkdir -p "${_new%/*}" 93 fi 94 if [ -f "${_old}" -a ! -f "${_new}" ]; then 95 echo "==> migrating ${_old}" 96 echo " to ${_new}" 97 mv "${_old}" "${_new}" 98 fi 99 if [ -f "${_old}.current" -a ! -f "${_new}.current" ]; then 100 echo "==> migrating ${_old}.current" 101 echo " to ${_new}.current" 102 mv "${_old}.current" "${_new}.current" 103 if [ -f "${_old}.current,v" -a ! -f "${_new}.current,v" ]; then 104 echo "==> migrating ${_old}.current,v" 105 echo " to ${_new}.current,v" 106 mv "${_old}.current,v" "${_new}.current,v" 107 fi 108 if [ -f "${_old}.backup" -a ! -f "${_new}.backup" ]; then 109 echo "==> migrating ${_old}.backup" 110 echo " to ${_new}.backup" 111 mv "${_old}.backup" "${_new}.backup" 112 fi 113 fi 114 } 115 116 117 # backup_and_diff file printdiff 118 # Determine if file needs backing up, and if so, do it. 119 # If printdiff is yes, display the diffs, otherwise 120 # just print a message saying "[changes omitted]". 121 # 122 backup_and_diff() 123 { 124 _file=$1 125 _printdiff=$2 126 if [ -z "$_file" -o -z "$_printdiff" ]; then 127 err 3 "USAGE: backup_and_diff file printdiff" 128 fi 129 ! checkyesno _printdiff 130 _printdiff=$? 131 132 _old=$backup_dir/${_file##*/} 133 case "$_file" in 134 $work_dir/*) 135 _new=$_file 136 migrate_file "$backup_dir/$_old" "$_new" 137 migrate_file "$_old" "$_new" 138 ;; 139 *) 140 _new=$backup_dir/$_file 141 migrate_file "$_old" "$_new" 142 ;; 143 esac 144 CUR=${_new}.current 145 BACK=${_new}.backup 146 if [ -f $_file ]; then 147 if [ -f $CUR ] ; then 148 if [ "$_printdiff" -ne 0 ]; then 149 diff ${diff_options} $CUR $_file > $OUTPUT 150 else 151 if ! cmp -s $CUR $_file; then 152 echo "[changes omitted]" 153 fi > $OUTPUT 154 fi 155 if [ -s $OUTPUT ] ; then 156 printf \ 157 "\n======\n%s diffs (OLD < > NEW)\n======\n" $_file 158 cat $OUTPUT 159 backup_file update $_file $CUR $BACK 160 fi 161 else 162 printf "\n======\n%s added\n======\n" $_file 163 if [ "$_printdiff" -ne 0 ]; then 164 diff ${diff_options} /dev/null $_file 165 else 166 echo "[changes omitted]" 167 fi 168 backup_file add $_file $CUR $BACK 169 fi 170 else 171 if [ -f $CUR ]; then 172 printf "\n======\n%s removed\n======\n" $_file 173 if [ "$_printdiff" -ne 0 ]; then 174 diff ${diff_options} $CUR /dev/null 175 else 176 echo "[changes omitted]" 177 fi 178 backup_file remove $_file $CUR $BACK 179 fi 180 fi 181 } 182 183 184 # These are used several times. 185 # 186 awk -F: '!/^\+/ { print $1 " " $3 }' $MP | sort -k2n > $MPBYUID 187 awk -F: '{ print $1 " " $9 }' $MP | sort -k2 > $MPBYPATH 188 for file in $special_files; do 189 [ -s $file ] && cat $file 190 done | mtree -CM -k all > $SPECIALSPEC || exit 1 191 192 193 # Check the master password file syntax. 194 # 195 if checkyesno check_passwd; then 196 # XXX: the sense of permit_star is reversed; the code works as 197 # implemented, but usage needs to be negated. 198 checkyesno check_passwd_permit_star && permit_star=0 || permit_star=1 199 checkyesno check_passwd_permit_nonalpha \ 200 && permit_nonalpha=1 || permit_nonalpha=0 201 202 awk -v "len=$max_loginlen" \ 203 -v "nowarn_shells_list=$check_passwd_nowarn_shells" \ 204 -v "nowarn_users_list=$check_passwd_nowarn_users" \ 205 -v "permit_star=$permit_star" \ 206 -v "permit_nonalpha=$permit_nonalpha" \ 207 ' 208 BEGIN { 209 while ( getline < "/etc/shells" > 0 ) { 210 if ($0 ~ /^\#/ || $0 ~ /^$/ ) 211 continue; 212 shells[$1]++; 213 } 214 split(nowarn_shells_list, a); 215 for (i in a) nowarn_shells[a[i]]++; 216 split(nowarn_users_list, a); 217 for (i in a) nowarn_users[a[i]]++; 218 uid0_users_list="root toor" 219 split(uid0_users_list, a); 220 for (i in a) uid0_users[a[i]]++; 221 FS=":"; 222 } 223 224 { 225 if ($0 ~ /^[ ]*$/) { 226 printf "Line %d is a blank line.\n", NR; 227 next; 228 } 229 230 # NIS compat entry? 231 compatline = $1 ~ "^[\\+-]"; 232 if (compatline) { 233 if ($1 == "+" && NF == 1) { 234 next; 235 } 236 sub("^.", "", $1); 237 } 238 if (NF != 10) 239 printf "Line %d has the wrong number of fields.\n", NR; 240 if (compatline) { 241 if ($3 == 0) 242 printf "Line %d includes entries with uid 0.\n", 243 NR; 244 if ($1 == "") 245 next; 246 } 247 if (!permit_nonalpha && 248 $1 !~ /^[_A-Za-z0-9]([-A-Za-z0-9_.]*[A-Za-z0-9])*$/) 249 printf "Login %s has non-alphanumeric characters.\n", 250 $1; 251 if (length($1) > len) 252 printf "Login %s has more than "len" characters.\n", 253 $1; 254 if ($2 == "" && !compatline && !nowarn_users[$1]) 255 printf "Login %s has no password.\n", $1; 256 if (!nowarn_shells[$10] && !nowarn_users[$1]) { 257 if (length($2) != 13 && 258 length($2) != 20 && 259 $2 !~ /^\$1/ && 260 $2 !~ /^\$2/ && 261 $2 !~ /^\$sha1/ && 262 $2 != "" && 263 (permit_star || $2 != "*") && 264 $2 !~ /^\*[A-z-]+$/ && 265 $1 != "toor") { 266 if ($10 == "" || shells[$10]) 267 printf "Login %s is off but still has "\ 268 "a valid shell (%s)\n", $1, $10; 269 } else if (compatline && $10 == "") { 270 # nothing 271 } else if (! shells[$10]) 272 printf "Login %s does not have a valid "\ 273 "shell (%s)\n", $1, $10; 274 } 275 if ($3 == 0 && !uid0_users[$1] && !nowarn_users[$1]) 276 printf "Login %s has a user id of 0.\n", $1; 277 if ($3 != "" && $3 < 0) 278 printf "Login %s has a negative user id.\n", $1; 279 if ($4 != "" && $4 < 0) 280 printf "Login %s has a negative group id.\n", $1; 281 }' < $MP > $OUTPUT 282 if [ -s $OUTPUT ] ; then 283 printf "\nChecking the $MP file:\n" 284 cat $OUTPUT 285 fi 286 287 awk -F: '{ print $1 }' $MP | sort | uniq -d > $OUTPUT 288 if [ -s $OUTPUT ] ; then 289 printf "\n$MP has duplicate user names.\n" 290 column $OUTPUT 291 fi 292 293 awk -v "permit_dups_list=$check_passwd_permit_dups" \ 294 ' 295 BEGIN { 296 split(permit_dups_list, a); 297 for (i in a) permit_dups[a[i]]++; 298 } 299 { 300 if (!permit_dups[$1]) 301 print $2; 302 }' < $MPBYUID | uniq -d > $TMP2 303 if [ -s $TMP2 ] ; then 304 printf "\n$MP has duplicate user ids.\n" 305 while read uid; do 306 grep -w $uid $MPBYUID 307 done < $TMP2 | column 308 fi 309 fi 310 311 # Check the group file syntax. 312 # 313 if checkyesno check_group; then 314 GRP=/etc/group 315 awk -F: -v "len=$max_grouplen" '{ 316 if ($0 ~ /^[ ]*$/) { 317 printf "Line %d is a blank line.\n", NR; 318 next; 319 } 320 if (NF != 4 && ($1 != "+" || NF != 1)) 321 printf "Line %d has the wrong number of fields.\n", NR; 322 if ($1 == "+" ) { 323 next; 324 } 325 if ($1 !~ /^[_A-Za-z0-9]([-A-Za-z0-9_.]*[A-Za-z0-9])*$/) 326 printf "Group %s has non-alphanumeric characters.\n", 327 $1; 328 if (length($1) > len) 329 printf "Group %s has more than "len" characters.\n", $1; 330 if ($3 !~ /[0-9]*/) 331 printf "Login %s has a negative group id.\n", $1; 332 }' < $GRP > $OUTPUT 333 if [ -s $OUTPUT ] ; then 334 printf "\nChecking the $GRP file:\n" 335 cat $OUTPUT 336 fi 337 338 awk -F: '{ print $1 }' $GRP | sort | uniq -d > $OUTPUT 339 if [ -s $OUTPUT ] ; then 340 printf "\n$GRP has duplicate group names.\n" 341 column $OUTPUT 342 fi 343 fi 344 345 # Check for root paths, umask values in startup files. 346 # The check for the root paths is problematical -- it's likely to fail 347 # in other environments. Once the shells have been modified to warn 348 # of '.' in the path, the path tests should go away. 349 # 350 if checkyesno check_rootdotfiles; then 351 rhome=~root 352 umaskset=no 353 list="/etc/csh.cshrc /etc/csh.login ${rhome}/.cshrc ${rhome}/.login" 354 for i in $list ; do 355 if [ -f $i ] ; then 356 if egrep '^[ \t]*umask[ \t]+[0-7]+' $i > /dev/null ; 357 then 358 umaskset=yes 359 fi 360 # Double check the umask value itself; ensure that 361 # both the group and other write bits are set. 362 # 363 egrep '^[ \t]*umask[ \t]+[0-7]+' $i | 364 awk '{ 365 if ($2 ~ /^.$/ || $2 ~! /[^2367].$/) { 366 print "\tRoot umask is group writable" 367 } 368 if ($2 ~ /[^2367]$/) { 369 print "\tRoot umask is other writable" 370 } 371 }' | sort -u 372 SAVE_PATH=$PATH 373 unset PATH 374 /bin/csh -f -s << end-of-csh > /dev/null 2>&1 375 source $i 376 /bin/ls -ldgT \$path > $TMP1 377 end-of-csh 378 export PATH=$SAVE_PATH 379 awk '{ 380 if ($10 ~ /^\.$/) { 381 print "\tThe root path includes ."; 382 next; 383 } 384 } 385 $1 ~ /^d....w/ \ 386 { print "\tRoot path directory " $10 " is group writable." } \ 387 $1 ~ /^d.......w/ \ 388 { print "\tRoot path directory " $10 " is other writable." }' \ 389 < $TMP1 390 fi 391 done > $OUTPUT 392 if [ $umaskset = "no" -o -s $OUTPUT ] ; then 393 printf "\nChecking root csh paths, umask values:\n$list\n\n" 394 if [ -s $OUTPUT ]; then 395 cat $OUTPUT 396 fi 397 if [ $umaskset = "no" ] ; then 398 printf "\tRoot csh startup files do not set the umask.\n" 399 fi 400 fi 401 402 umaskset=no 403 list="/etc/profile ${rhome}/.profile" 404 for i in $list; do 405 if [ -f $i ] ; then 406 if egrep umask $i > /dev/null ; then 407 umaskset=yes 408 fi 409 egrep umask $i | 410 awk '$2 ~ /^.$/ || $2 ~ /[^2367].$/ \ 411 { print "\tRoot umask is group writable" } \ 412 $2 ~ /[^2367]$/ \ 413 { print "\tRoot umask is other writable" }' 414 SAVE_PATH=$PATH 415 unset PATH 416 /bin/sh << end-of-sh > /dev/null 2>&1 417 . $i 418 list=\$(echo \$PATH | /usr/bin/sed -e \ 419 's/^:/.:/;s/:$/:./;s/::/:.:/g;s/:/ /g') 420 /bin/ls -ldgT \$list > $TMP1 421 end-of-sh 422 export PATH=$SAVE_PATH 423 awk '{ 424 if ($10 ~ /^\.$/) { 425 print "\tThe root path includes ."; 426 next; 427 } 428 } 429 $1 ~ /^d....w/ \ 430 { print "\tRoot path directory " $10 " is group writable." } \ 431 $1 ~ /^d.......w/ \ 432 { print "\tRoot path directory " $10 " is other writable." }' \ 433 < $TMP1 434 435 fi 436 done > $OUTPUT 437 if [ $umaskset = "no" -o -s $OUTPUT ] ; then 438 printf "\nChecking root sh paths, umask values:\n$list\n" 439 if [ -s $OUTPUT ]; then 440 cat $OUTPUT 441 fi 442 if [ $umaskset = "no" ] ; then 443 printf "\tRoot sh startup files do not set the umask.\n" 444 fi 445 fi 446 fi 447 448 # Root and uucp should both be in /etc/ftpusers. 449 # 450 if checkyesno check_ftpusers; then 451 list="uucp "$(awk '$2 == 0 { print $1 }' $MPBYUID) 452 for i in $list; do 453 if /usr/libexec/ftpd -C $i ; then 454 printf "\t$i is not denied\n" 455 fi 456 done > $OUTPUT 457 if [ -s $OUTPUT ]; then 458 printf "\nChecking the /etc/ftpusers configuration:\n" 459 cat $OUTPUT 460 fi 461 fi 462 463 # Uudecode should not be in the /etc/mail/aliases file. 464 # 465 if checkyesno check_aliases; then 466 for f in /etc/mail/aliases /etc/aliases; do 467 if [ -f $f ] && egrep '^[^#]*(uudecode|decode).*\|' $f; then 468 printf "\nEntry for uudecode in $f file.\n" 469 fi 470 done 471 fi 472 473 # Files that should not have + signs. 474 # 475 if checkyesno check_rhosts; then 476 list="/etc/hosts.equiv /etc/hosts.lpd" 477 for f in $list ; do 478 if [ -f $f ] && egrep '\+' $f > /dev/null ; then 479 printf "\nPlus sign in $f file.\n" 480 fi 481 done 482 483 # Check for special users with .rhosts files. Only root and toor should 484 # have .rhosts files. Also, .rhosts files should not have plus signs. 485 awk -F: '$1 != "root" && $1 != "toor" && \ 486 ($3 < 100 || $1 == "ftp" || $1 == "uucp") \ 487 { print $1 " " $9 }' $MP | 488 sort -k2 | 489 while read uid homedir; do 490 if [ -f ${homedir}/.rhosts ] ; then 491 rhost=$(ls -ldgT ${homedir}/.rhosts) 492 printf -- "$uid: $rhost\n" 493 fi 494 done > $OUTPUT 495 if [ -s $OUTPUT ] ; then 496 printf "\nChecking for special users with .rhosts files.\n" 497 cat $OUTPUT 498 fi 499 500 while read uid homedir; do 501 if [ -f ${homedir}/.rhosts -a -r ${homedir}/.rhosts ] && \ 502 cat -f ${homedir}/.rhosts | egrep '\+' > /dev/null ; then 503 printf -- "$uid: + in .rhosts file.\n" 504 fi 505 done < $MPBYPATH > $OUTPUT 506 if [ -s $OUTPUT ] ; then 507 printf "\nChecking .rhosts files syntax.\n" 508 cat $OUTPUT 509 fi 510 fi 511 512 # Check home directories. Directories should not be owned by someone else 513 # or writable. 514 # 515 if checkyesno check_homes; then 516 checkyesno check_homes_permit_usergroups && \ 517 permit_usergroups=1 || permit_usergroups=0 518 while read uid homedir; do 519 if [ -d ${homedir}/ ] ; then 520 file=$(ls -ldgT ${homedir}) 521 printf -- "$uid $file\n" 522 fi 523 done < $MPBYPATH | 524 awk -v "usergroups=$permit_usergroups" ' 525 $1 != $4 && $4 != "root" \ 526 { print "user " $1 " home directory is owned by " $4 } 527 $2 ~ /^d....w/ && (!usergroups || $5 != $1) \ 528 { print "user " $1 " home directory is group writable" } 529 $2 ~ /^d.......w/ \ 530 { print "user " $1 " home directory is other writable" }' \ 531 > $OUTPUT 532 if [ -s $OUTPUT ] ; then 533 printf "\nChecking home directories.\n" 534 cat $OUTPUT 535 fi 536 537 # Files that should not be owned by someone else or readable. 538 list=".Xauthority .netrc .ssh/id_dsa .ssh/id_rsa .ssh/identity" 539 while read uid homedir; do 540 for f in $list ; do 541 file=${homedir}/${f} 542 if [ -f $file ] ; then 543 printf -- "$uid $f $(ls -ldgT $file)\n" 544 fi 545 done 546 done < $MPBYPATH | 547 awk -v "usergroups=$permit_usergroups" ' 548 $1 != $5 && $5 != "root" \ 549 { print "user " $1 " " $2 " file is owned by " $5 } 550 $3 ~ /^-...r/ && (!usergroups || $6 != $1) \ 551 { print "user " $1 " " $2 " file is group readable" } 552 $3 ~ /^-......r/ \ 553 { print "user " $1 " " $2 " file is other readable" } 554 $3 ~ /^-....w/ && (!usergroups || $6 != $1) \ 555 { print "user " $1 " " $2 " file is group writable" } 556 $3 ~ /^-.......w/ \ 557 { print "user " $1 " " $2 " file is other writable" }' \ 558 > $OUTPUT 559 560 # Files that should not be owned by someone else or writable. 561 list=".bash_history .bash_login .bash_logout .bash_profile .bashrc \ 562 .cshrc .emacs .exrc .forward .history .k5login .klogin .login \ 563 .logout .profile .qmail .rc_history .rhosts .shosts ssh .tcshrc \ 564 .twmrc .xinitrc .xsession .ssh/authorized_keys \ 565 .ssh/authorized_keys2 .ssh/config .ssh/id_dsa.pub \ 566 .ssh/id_rsa.pub .ssh/identity.pub .ssh/known_hosts \ 567 .ssh/known_hosts2" 568 while read uid homedir; do 569 for f in $list ; do 570 file=${homedir}/${f} 571 if [ -f $file ] ; then 572 printf -- "$uid $f $(ls -ldgT $file)\n" 573 fi 574 done 575 done < $MPBYPATH | 576 awk -v "usergroups=$permit_usergroups" ' 577 $1 != $5 && $5 != "root" \ 578 { print "user " $1 " " $2 " file is owned by " $5 } 579 $3 ~ /^-....w/ && (!usergroups || $6 != $1) \ 580 { print "user " $1 " " $2 " file is group writable" } 581 $3 ~ /^-.......w/ \ 582 { print "user " $1 " " $2 " file is other writable" }' \ 583 >> $OUTPUT 584 if [ -s $OUTPUT ] ; then 585 printf "\nChecking dot files.\n" 586 cat $OUTPUT 587 fi 588 fi 589 590 # Mailboxes should be owned by user and unreadable. 591 # 592 if checkyesno check_varmail; then 593 ls -lA /var/mail | \ 594 awk ' NR == 1 { next; } 595 $9 ~ /^\./ {next; } 596 $3 != $9 { 597 print "user " $9 " mailbox is owned by " $3 598 } 599 $1 != "-rw-------" { 600 print "user " $9 " mailbox is " $1 ", group " $4 601 }' > $OUTPUT 602 if [ -s $OUTPUT ] ; then 603 printf "\nChecking mailbox ownership.\n" 604 cat $OUTPUT 605 fi 606 fi 607 608 # NFS exports shouldn't be globally exported 609 # 610 if checkyesno check_nfs && [ -f /etc/exports ]; then 611 awk '{ 612 # ignore comments and blank lines 613 if ($0 ~ /^\#/ || $0 ~ /^$/ ) 614 next; 615 # manage line continuation 616 while ($NF ~ /^\\$/) { 617 $NF = ""; 618 line = $0 ""; 619 getline; 620 $0 = line $0 ""; 621 } 622 623 delete dir; 624 readonly = ndir = 0; 625 for (i = 1; i <= NF; ++i) { 626 if ($i ~ /^\//) dir[ndir++] = $i; 627 else if ($i ~ /^-/) { 628 if ($i ~ /^-(ro|o)$/) readonly = 1; 629 if ($i ~ /^-network/) next; 630 } 631 else next; 632 } 633 if (readonly) 634 for (item in dir) 635 rodir[nrodir++] = dir[item]; 636 else 637 for (item in dir) 638 rwdir[nrwdir++] = dir[item]; 639 640 } 641 642 END { 643 if (nrodir) { 644 printf("Globally exported file system%s, read-only:\n", 645 nrodir > 1 ? "s" : ""); 646 for (item in rodir) 647 printf("\t%s\n", rodir[item]); 648 } 649 if (nrwdir) { 650 printf("Globally exported file system%s, read-write:\n", 651 nrwdir > 1 ? "s" : ""); 652 for (item in rwdir) 653 printf("\t%s\n", rwdir[item]); 654 } 655 }' < /etc/exports > $OUTPUT 656 if [ -s $OUTPUT ] ; then 657 printf "\nChecking for globally exported file systems.\n" 658 cat $OUTPUT 659 fi 660 fi 661 662 # Display any changes in setuid files and devices. 663 # 664 if checkyesno check_devices; then 665 > $ERR 666 ( 667 668 # Convert check_devices_ignore_fstypes="foo !bar bax" 669 # into "-fstype foo -o ! -fstype bar -o -fstype bax" 670 # and check_devices_ignore_paths="/foo !/bar /bax" 671 # into " -path /foo -o ! -path /bar -o -path /bax" 672 # 673 ignexpr=$(\ 674 echo $check_devices_ignore_fstypes | \ 675 sed -e's/\(!*\)\([^[:space:]]\{1,\}\)/-o \1 -fstype \2/g' ; \ 676 echo $check_devices_ignore_paths | \ 677 sed -e's/\(!*\)\([^[:space:]]\{1,\}\)/-o \1 -path \2/g' \ 678 ) 679 680 # Massage the expression into ( $ignexpr ) -a -prune -o 681 if [ -n "${ignexpr}" ]; then 682 ignexpr=$(\ 683 echo $ignexpr | \ 684 sed -e 's/^-o /( /' \ 685 -e 's/$/ ) -a -prune -o/' \ 686 ) 687 fi 688 689 find / $ignexpr \ 690 \( \( -perm -u+s -a ! -type d \) -o \ 691 \( -perm -g+s -a ! -type d \) -o \ 692 -type b -o -type c \) -print0 | \ 693 xargs -0 ls -ldgTq | sort +9 > $LIST 694 695 ) 2> $OUTPUT 696 697 # Display any errors that occurred during system file walk. 698 if [ -s $OUTPUT ] ; then 699 printf "Setuid/device find errors:\n" >> $ERR 700 cat $OUTPUT >> $ERR 701 printf "\n" >> $ERR 702 fi 703 704 # Display any changes in the setuid file list. 705 egrep -v '^[bc]' $LIST > $TMP1 706 if [ -s $TMP1 ] ; then 707 # Check to make sure uudecode isn't setuid. 708 if grep -w uudecode $TMP1 > /dev/null ; then 709 printf "\nUudecode is setuid.\n" >> $ERR 710 fi 711 712 file=$work_dir/setuid 713 migrate_file "$backup_dir/setuid" "$file" 714 CUR=${file}.current 715 BACK=${file}.backup 716 if [ -s $CUR ] ; then 717 if cmp -s $CUR $TMP1 ; then 718 : 719 else 720 > $TMP2 721 join -110 -210 -v2 $CUR $TMP1 > $OUTPUT 722 if [ -s $OUTPUT ] ; then 723 printf "Setuid additions:\n" >> $ERR 724 tee -a $TMP2 < $OUTPUT >> $ERR 725 printf "\n" >> $ERR 726 fi 727 728 join -110 -210 -v1 $CUR $TMP1 > $OUTPUT 729 if [ -s $OUTPUT ] ; then 730 printf "Setuid deletions:\n" >> $ERR 731 tee -a $TMP2 < $OUTPUT >> $ERR 732 printf "\n" >> $ERR 733 fi 734 735 sort -k10 $TMP2 $CUR $TMP1 | \ 736 sed -e 's/[ ][ ]*/ /g' | \ 737 uniq -u > $OUTPUT 738 if [ -s $OUTPUT ] ; then 739 printf "Setuid changes:\n" >> $ERR 740 column -t $OUTPUT >> $ERR 741 printf "\n" >> $ERR 742 fi 743 744 backup_file update $TMP1 $CUR $BACK 745 fi 746 else 747 printf "Setuid additions:\n" >> $ERR 748 column -t $TMP1 >> $ERR 749 printf "\n" >> $ERR 750 backup_file add $TMP1 $CUR $BACK 751 fi 752 fi 753 754 # Check for block and character disk devices that are readable or 755 # writable or not owned by root.operator. 756 >$TMP1 757 DISKLIST="ccd ch hk hp ld md ra raid rb rd rl rx \ 758 sd se ss uk up vnd wd xd xy" 759 # DISKLIST="$DISKLIST ct mt st wt" 760 for i in $DISKLIST; do 761 egrep "^b.*/${i}[0-9][0-9]*[a-p]$" $LIST >> $TMP1 762 egrep "^c.*/r${i}[0-9][0-9]*[a-p]$" $LIST >> $TMP1 763 done 764 765 awk '$3 != "root" || $4 != "operator" || $1 !~ /.rw-r-----/ \ 766 { printf "Disk %s is user %s, group %s, permissions %s.\n", \ 767 $11, $3, $4, $1; }' < $TMP1 > $OUTPUT 768 if [ -s $OUTPUT ] ; then 769 printf "\nChecking disk ownership and permissions.\n" >> $ERR 770 cat $OUTPUT >> $ERR 771 printf "\n" >> $ERR 772 fi 773 774 # Display any changes in the device file list. 775 egrep '^[bc]' $LIST | sort -k11 > $TMP1 776 if [ -s $TMP1 ] ; then 777 file=$work_dir/device 778 migrate_file "$backup_dir/device" "$file" 779 CUR=${file}.current 780 BACK=${file}.backup 781 782 if [ -s $CUR ] ; then 783 if cmp -s $CUR $TMP1 ; then 784 : 785 else 786 > $TMP2 787 join -111 -211 -v2 $CUR $TMP1 > $OUTPUT 788 if [ -s $OUTPUT ] ; then 789 printf "Device additions:\n" >> $ERR 790 tee -a $TMP2 < $OUTPUT >> $ERR 791 printf "\n" >> $ERR 792 fi 793 794 join -111 -211 -v1 $CUR $TMP1 > $OUTPUT 795 if [ -s $OUTPUT ] ; then 796 printf "Device deletions:\n" >> $ERR 797 tee -a $TMP2 < $OUTPUT >> $ERR 798 printf "\n" >> $ERR 799 fi 800 801 # Report any block device change. Ignore 802 # character devices, only the name is 803 # significant. 804 cat $TMP2 $CUR $TMP1 | \ 805 sed -e '/^c/d' | \ 806 sort -k11 | \ 807 sed -e 's/[ ][ ]*/ /g' | \ 808 uniq -u > $OUTPUT 809 if [ -s $OUTPUT ] ; then 810 printf "Block device changes:\n" >> $ERR 811 column -t $OUTPUT >> $ERR 812 printf "\n" >> $ERR 813 fi 814 815 backup_file update $TMP1 $CUR $BACK 816 fi 817 else 818 printf "Device additions:\n" >> $ERR 819 column -t $TMP1 >> $ERR 820 printf "\n" >> $ERR 821 backup_file add $TMP1 $CUR $BACK >> $ERR 822 fi 823 fi 824 if [ -s $ERR ] ; then 825 printf "\nChecking setuid files and devices:\n" 826 cat $ERR 827 printf "\n" 828 fi 829 fi 830 831 # Check special files. 832 # Check system binaries. 833 # 834 # Create the mtree tree specifications using: 835 # mtree -cx -pDIR -kmd5,uid,gid,mode,nlink,size,link,time > DIR.secure 836 # chown root:wheel DIR.secure 837 # chmod u+r,go= DIR.secure 838 # 839 # Note, this is not complete protection against Trojan horsed binaries, as 840 # the hacker can modify the tree specification to match the replaced binary. 841 # For details on really protecting yourself against modified binaries, see 842 # the mtree(8) manual page. 843 # 844 if checkyesno check_mtree; then 845 if checkyesno check_mtree_follow_symlinks; then 846 check_mtree_flags="-L" 847 else 848 check_mtree_flags="" 849 fi 850 mtree -e -l -p / $check_mtree_flags -f $SPECIALSPEC 3>&1 >$OUTPUT 2>&3 | 851 grep -v '^mtree: dev/tty: Device not configured$' >&2 852 if [ -s $OUTPUT ]; then 853 printf "\nChecking special files and directories.\n" 854 cat $OUTPUT 855 fi 856 857 for file in /etc/mtree/*.secure; do 858 [ $file = '/etc/mtree/*.secure' ] && continue 859 tree=$(sed -n -e '3s/.* //p' -e 3q $file) 860 mtree $check_mtree_flags -f $file -p $tree > $TMP1 861 if [ -s $TMP1 ]; then 862 printf "\nChecking $tree:\n" 863 cat $TMP1 864 fi 865 done > $OUTPUT 866 if [ -s $OUTPUT ]; then 867 printf "\nChecking system binaries:\n" 868 cat $OUTPUT 869 fi 870 fi 871 872 # Backup disklabels of available disks 873 # 874 if checkyesno check_disklabels; then 875 # migrate old disklabels 876 for file in $(ls -1d $backup_dir/$backup_dir/disklabel.* \ 877 $backup_dir/disklabel.* 2>/dev/null); do 878 migrate_file "$file" "$work_dir/${file##*/}" 879 done 880 881 # generate list of old disklabels, fdisks & wedges and remove them 882 ls -1d $work_dir/disklabel.* $work_dir/fdisk.* $work_dir/wedges.* 2>/dev/null | 883 egrep -v '\.(backup|current)(,v)?$' > $LABELS 884 xargs rm < $LABELS 885 886 # generate disklabels of all disks excluding: cd dk fd md st 887 disks=$(iostat -x | awk 'NR > 1 && $1 !~ /^[cfm]d|dk|st|nfs/ { print $1; }') 888 for i in $disks; do 889 disklabel $i > "$work_dir/disklabel.$i" 2>/dev/null 890 done 891 892 # if fdisk is available, generate fdisks for: ed ld sd wd 893 if [ -x /sbin/fdisk ]; then 894 disks=$(iostat -x | awk 'NR > 1 && $1 ~ /^[elsw]d/ { print $1; }') 895 for i in $disks; do 896 /sbin/fdisk $i > "$work_dir/fdisk.$i" 2>/dev/null 897 done 898 fi 899 900 # if dkctl is available, generate dkctl listwedges for: ed ld sd wd cgd ofdisk ra rl raid 901 if [ -x /sbin/dkctl ]; then 902 disks=$(iostat -x | awk 'NR > 1 && $1 ~ /^[elsw]d|cgd|ofdisk|r[al]|raid/ { print $1; }') 903 for i in $disks; do 904 /sbin/dkctl $i listwedges > "$work_dir/wedges.$i" 2>/dev/null 905 done 906 fi 907 908 # append list of new disklabels, fdisks and wedges 909 ls -1d $work_dir/disklabel.* $work_dir/fdisk.* $work_dir/wedges.* 2>/dev/null | 910 egrep -v '\.(backup|current)(,v)?$' >> $LABELS 911 CHANGELIST="$LABELS $CHANGELIST" 912 fi 913 914 if checkyesno check_lvm; then 915 916 # generate list of existing LVM elements Physical Volumes, Volume Groups and Logical Volumes. 917 if [ -x /sbin/lvm ]; then 918 lvm pvdisplay -m >"$work_dir/lvm.pv" 2>/dev/null 919 lvm vgdisplay -m >"$work_dir/lvm.vg" 2>/dev/null 920 lvm lvdisplay -m >"$work_dir/lvm.lv" 2>/dev/null 921 fi 922 ls -1d $work_dir/lvm.* 2>/dev/null | 923 egrep -v '\.(backup|current)(,v)?$'>> $LVM_LABELS 924 CHANGELIST="$CHANGELIST $LVM_LABELS" 925 fi 926 927 # Check for changes in the list of installed pkgs 928 # 929 if checkyesno check_pkgs && have_pkgs; then 930 pkgs=$work_dir/pkgs 931 migrate_file "$backup_dir/pkgs" "$pkgs" 932 pkg_dbdir=$(${pkg_admin} config-var PKG_DBDIR) 933 : ${pkg_dbdir:=/var/db/pkg} 934 ( cd $pkg_dbdir 935 $pkg_info | sort 936 echo "" 937 find . \( -name +REQUIRED_BY -o -name +CONTENTS \) -print0 | 938 xargs -0 ls -ldgTq | sort -t. +1 | sed -e 's, \./, ,' 939 ) > $pkgs 940 echo "$pkgs" > $PKGS 941 CHANGELIST="$PKGS $CHANGELIST" 942 fi 943 944 # List of files that get backed up and checked for any modifications. 945 # Any changes cause the files to rotate. 946 # 947 if checkyesno check_changelist ; then 948 mtree -D -k type -f $SPECIALSPEC -E exclude | 949 sed '/^type=file/!d ; s/type=file \.//' | unvis > $CHANGEFILES 950 951 ( 952 # Add other files which might dynamically exist: 953 # /etc/ifconfig.* 954 # /etc/raid*.conf 955 # /etc/rc.d/* 956 # /etc/rc.conf.d/* 957 # 958 echo "/etc/ifconfig.*" 959 echo "/etc/raid*.conf" 960 echo "/etc/rc.d/*" 961 echo "/etc/rc.conf.d/*" 962 echo "/etc/lvm/backup/*" 963 echo "/etc/lvm/archive/*" 964 965 # Add /etc/changelist 966 # 967 if [ -s /etc/changelist ]; then 968 grep -v '^#' /etc/changelist 969 fi 970 ) | while read file; do 971 case "$file" in 972 *[\*\?\[]*) # If changelist line is a glob ... 973 # ... expand possible backup files 974 # 975 ls -1d $(echo $backup_dir/${file}.current) 2>/dev/null \ 976 | sed "s,^$backup_dir/,, ; s,\.current$,," 977 978 # ... expand possible files 979 # 980 ls -1d $(echo $file) 2>/dev/null 981 ;; 982 *) 983 # Otherwise, just print the filename 984 echo $file 985 ;; 986 esac 987 done >> $CHANGEFILES 988 CHANGELIST="$CHANGEFILES $CHANGELIST" 989 fi 990 991 # Special case backups, including the master password file and 992 # ssh private host keys. The normal backup mechanisms for 993 # $check_changelist (see below) also print out the actual file 994 # differences and we don't want to do that for these files 995 # 996 echo $MP > $TMP1 # always add /etc/master.passwd 997 mtree -D -k type -f $SPECIALSPEC -I nodiff | 998 sed '/^type=file/!d ; s/type=file \.//' | unvis >> $TMP1 999 grep -v '^$' $TMP1 | sort -u > $TMP2 1000 1001 while read file; do 1002 backup_and_diff "$file" no 1003 done < $TMP2 1004 1005 1006 if [ -n "$CHANGELIST" ]; then 1007 grep -h -v '^$' $CHANGELIST | sort -u > $TMP1 1008 comm -23 $TMP1 $TMP2 | while read file; do 1009 backup_and_diff "$file" yes 1010 done 1011 fi 1012 1013 if have_pkgs; then 1014 if checkyesno check_pkg_vulnerabilities; then 1015 ${pkg_admin} ${_compat_K_flag} audit >${OUTPUT} 2>&1 1016 if [ -s ${OUTPUT} ]; then 1017 printf "\nInstalled vulnerable packages:\n" 1018 cat ${OUTPUT} 1019 fi 1020 fi 1021 1022 if checkyesno check_pkg_signatures; then 1023 ${pkg_admin} ${_compat_K_flag} check >${OUTPUT} 2>&1 1024 if [ $? -ne 0 ]; then 1025 printf "\nFiles with invalid signatures:\n" 1026 cat ${OUTPUT} 1027 fi 1028 fi 1029 fi 1030 1031 if [ -f /etc/security.local ]; then 1032 . /etc/security.local > $OUTPUT 2>&1 1033 if [ -s $OUTPUT ] ; then 1034 printf "\nRunning /etc/security.local:\n" 1035 cat $OUTPUT 1036 fi 1037 fi 1038
Indexes created Sun Sep 28 07:09:56 GMT 2025