security revision 1.114
1 #!/bin/sh - 2 # 3 # $NetBSD: security,v 1.114 2013/11/06 19:30:20 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 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" -o -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}" -a ! -f "${_new}" ]; then 96 echo "==> migrating ${_old}" 97 echo " to ${_new}" 98 mv "${_old}" "${_new}" 99 fi 100 if [ -f "${_old}.current" -a ! -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" -a ! -f "${_new}.current,v" ]; then 105 echo "==> migrating ${_old}.current,v" 106 echo " to ${_new}.current,v" 107 mv "${_old}.current,v" "${_new}.current,v" 108 fi 109 if [ -f "${_old}.backup" -a ! -f "${_new}.backup" ]; then 110 echo "==> migrating ${_old}.backup" 111 echo " to ${_new}.backup" 112 mv "${_old}.backup" "${_new}.backup" 113 fi 114 fi 115 } 116 117 118 # backup_and_diff file printdiff 119 # Determine if file needs backing up, and if so, do it. 120 # If printdiff is yes, display the diffs, otherwise 121 # just print a message saying "[changes omitted]". 122 # 123 backup_and_diff() 124 { 125 _file=$1 126 _printdiff=$2 127 if [ -z "$_file" -o -z "$_printdiff" ]; then 128 err 3 "USAGE: backup_and_diff file printdiff" 129 fi 130 ! checkyesno _printdiff 131 _printdiff=$? 132 133 _old=$backup_dir/${_file##*/} 134 case "$_file" in 135 $work_dir/*) 136 _new=$_file 137 migrate_file "$backup_dir/$_old" "$_new" 138 migrate_file "$_old" "$_new" 139 ;; 140 *) 141 _new=$backup_dir/$_file 142 migrate_file "$_old" "$_new" 143 ;; 144 esac 145 CUR=${_new}.current 146 BACK=${_new}.backup 147 if [ -f $_file ]; then 148 if [ -f $CUR ] ; then 149 if [ "$_printdiff" -ne 0 ]; then 150 diff ${diff_options} $CUR $_file > $OUTPUT 151 else 152 if ! cmp -s $CUR $_file; then 153 echo "[changes omitted]" 154 fi > $OUTPUT 155 fi 156 if [ -s $OUTPUT ] ; then 157 printf \ 158 "\n======\n%s diffs (OLD < > NEW)\n======\n" $_file 159 cat $OUTPUT 160 backup_file update $_file $CUR $BACK 161 fi 162 else 163 printf "\n======\n%s added\n======\n" $_file 164 if [ "$_printdiff" -ne 0 ]; then 165 diff ${diff_options} /dev/null $_file 166 else 167 echo "[changes omitted]" 168 fi 169 backup_file add $_file $CUR $BACK 170 fi 171 else 172 if [ -f $CUR ]; then 173 printf "\n======\n%s removed\n======\n" $_file 174 if [ "$_printdiff" -ne 0 ]; then 175 diff ${diff_options} $CUR /dev/null 176 else 177 echo "[changes omitted]" 178 fi 179 backup_file remove $_file $CUR $BACK 180 fi 181 fi 182 } 183 184 185 # These are used several times. 186 # 187 awk -F: '!/^\+/ { print $1 " " $3 }' $MP | sort -k2n > $MPBYUID 188 awk -F: '{ print $1 " " $9 }' $MP | sort -k2 > $MPBYPATH 189 for file in $special_files; do 190 [ -s $file ] && cat $file 191 done | mtree -CM -k all > $SPECIALSPEC || exit 1 192 193 194 # Check the master password file syntax. 195 # 196 if checkyesno check_passwd; then 197 # XXX: the sense of permit_star is reversed; the code works as 198 # implemented, but usage needs to be negated. 199 checkyesno check_passwd_permit_star && permit_star=0 || permit_star=1 200 checkyesno check_passwd_permit_nonalpha \ 201 && permit_nonalpha=1 || permit_nonalpha=0 202 203 awk -v "len=$max_loginlen" \ 204 -v "nowarn_shells_list=$check_passwd_nowarn_shells" \ 205 -v "nowarn_users_list=$check_passwd_nowarn_users" \ 206 -v "permit_star=$permit_star" \ 207 -v "permit_nonalpha=$permit_nonalpha" \ 208 ' 209 BEGIN { 210 while ( getline < "/etc/shells" > 0 ) { 211 if ($0 ~ /^\#/ || $0 ~ /^$/ ) 212 continue; 213 shells[$1]++; 214 } 215 split(nowarn_shells_list, a); 216 for (i in a) nowarn_shells[a[i]]++; 217 split(nowarn_users_list, a); 218 for (i in a) nowarn_users[a[i]]++; 219 uid0_users_list="root toor" 220 split(uid0_users_list, a); 221 for (i in a) uid0_users[a[i]]++; 222 FS=":"; 223 } 224 225 { 226 if ($0 ~ /^[ ]*$/) { 227 printf "Line %d is a blank line.\n", NR; 228 next; 229 } 230 231 # NIS compat entry? 232 compatline = $1 ~ "^[\\+-]"; 233 if (compatline) { 234 if ($1 == "+" && NF == 1) { 235 next; 236 } 237 sub("^.", "", $1); 238 } 239 if (NF != 10) 240 printf "Line %d has the wrong number of fields.\n", NR; 241 if (compatline) { 242 if ($3 == 0) 243 printf "Line %d includes entries with uid 0.\n", 244 NR; 245 if ($1 == "") 246 next; 247 } 248 if (!permit_nonalpha && 249 $1 !~ /^[_A-Za-z0-9]([-A-Za-z0-9_.]*[A-Za-z0-9])*$/) 250 printf "Login %s has non-alphanumeric characters.\n", 251 $1; 252 if (length($1) > len) 253 printf "Login %s has more than "len" characters.\n", 254 $1; 255 if ($2 == "" && !compatline && !nowarn_users[$1]) 256 printf "Login %s has no password.\n", $1; 257 if (!nowarn_shells[$10] && !nowarn_users[$1]) { 258 if (length($2) != 13 && 259 length($2) != 20 && 260 $2 !~ /^\$1/ && 261 $2 !~ /^\$2/ && 262 $2 !~ /^\$sha1/ && 263 $2 != "" && 264 (permit_star || $2 != "*") && 265 $2 !~ /^\*[A-z-]+$/ && 266 $1 != "toor") { 267 if ($10 == "" || shells[$10]) 268 printf "Login %s is off but still has "\ 269 "a valid shell (%s)\n", $1, $10; 270 } else if (compatline && $10 == "") { 271 # nothing 272 } else if (! shells[$10]) 273 printf "Login %s does not have a valid "\ 274 "shell (%s)\n", $1, $10; 275 } 276 if ($3 == 0 && !uid0_users[$1] && !nowarn_users[$1]) 277 printf "Login %s has a user id of 0.\n", $1; 278 if ($3 != "" && $3 < 0) 279 printf "Login %s has a negative user id.\n", $1; 280 if ($4 != "" && $4 < 0) 281 printf "Login %s has a negative group id.\n", $1; 282 }' < $MP > $OUTPUT 283 if [ -s $OUTPUT ] ; then 284 printf "\nChecking the $MP file:\n" 285 cat $OUTPUT 286 fi 287 288 awk -F: '{ print $1 }' $MP | sort | uniq -d > $OUTPUT 289 if [ -s $OUTPUT ] ; then 290 printf "\n$MP has duplicate user names.\n" 291 column $OUTPUT 292 fi 293 294 awk -v "permit_dups_list=$check_passwd_permit_dups" \ 295 ' 296 BEGIN { 297 split(permit_dups_list, a); 298 for (i in a) permit_dups[a[i]]++; 299 } 300 { 301 if (!permit_dups[$1]) 302 print $2; 303 }' < $MPBYUID | uniq -d > $TMP2 304 if [ -s $TMP2 ] ; then 305 printf "\n$MP has duplicate user ids.\n" 306 while read uid; do 307 grep -w $uid $MPBYUID 308 done < $TMP2 | column 309 fi 310 fi 311 312 # Check the group file syntax. 313 # 314 if checkyesno check_group; then 315 GRP=/etc/group 316 awk -F: -v "len=$max_grouplen" '{ 317 if ($0 ~ /^[ ]*$/) { 318 printf "Line %d is a blank line.\n", NR; 319 next; 320 } 321 if (NF != 4 && ($1 != "+" || NF != 1)) 322 printf "Line %d has the wrong number of fields.\n", NR; 323 if ($1 == "+" ) { 324 next; 325 } 326 if ($1 !~ /^[_A-Za-z0-9]([-A-Za-z0-9_.]*[A-Za-z0-9])*$/) 327 printf "Group %s has non-alphanumeric characters.\n", 328 $1; 329 if (length($1) > len) 330 printf "Group %s has more than "len" characters.\n", $1; 331 if ($3 !~ /[0-9]*/) 332 printf "Login %s has a negative group id.\n", $1; 333 }' < $GRP > $OUTPUT 334 if [ -s $OUTPUT ] ; then 335 printf "\nChecking the $GRP file:\n" 336 cat $OUTPUT 337 fi 338 339 awk -F: '{ print $1 }' $GRP | sort | uniq -d > $OUTPUT 340 dupgroups="" 341 for group in $(cat $OUTPUT) ; do 342 gcount=$(awk -F: "/$group/ { print \$1,\$3 }" $GRP | sort -u | wc -l) 343 if [ $gcount -gt 1 ]; then 344 dupgroups="$dupgroups $group" 345 fi 346 done 347 if [ ! -z $dupgroups ] ; then 348 printf "\n$GRP has duplicate group names.\n" 349 printf "$dupgroups\n" 350 fi 351 fi 352 353 # Check for root paths, umask values in startup files. 354 # The check for the root paths is problematical -- it's likely to fail 355 # in other environments. Once the shells have been modified to warn 356 # of '.' in the path, the path tests should go away. 357 # 358 if checkyesno check_rootdotfiles; then 359 rhome=~root 360 umaskset=no 361 list="/etc/csh.cshrc /etc/csh.login ${rhome}/.cshrc ${rhome}/.login" 362 for i in $list ; do 363 if [ -f $i ] ; then 364 if egrep '^[ \t]*umask[ \t]+[0-7]+' $i > /dev/null ; 365 then 366 umaskset=yes 367 fi 368 # Double check the umask value itself; ensure that 369 # both the group and other write bits are set. 370 # 371 egrep '^[ \t]*umask[ \t]+[0-7]+' $i | 372 awk '{ 373 if ($2 ~ /^.$/ || $2 ~! /[^2367].$/) { 374 print "\tRoot umask is group writable" 375 } 376 if ($2 ~ /[^2367]$/) { 377 print "\tRoot umask is other writable" 378 } 379 }' | sort -u 380 SAVE_PATH=$PATH 381 unset PATH 382 /bin/csh -f -s << end-of-csh > /dev/null 2>&1 383 source $i 384 /bin/ls -ldgT \$path > $TMP1 385 end-of-csh 386 export PATH=$SAVE_PATH 387 awk '{ 388 if ($10 ~ /^\.$/) { 389 print "\tThe root path includes ."; 390 next; 391 } 392 } 393 $1 ~ /^d....w/ \ 394 { print "\tRoot path directory " $10 " is group writable." } \ 395 $1 ~ /^d.......w/ \ 396 { print "\tRoot path directory " $10 " is other writable." }' \ 397 < $TMP1 398 fi 399 done > $OUTPUT 400 if [ $umaskset = "no" -o -s $OUTPUT ] ; then 401 printf "\nChecking root csh paths, umask values:\n$list\n\n" 402 if [ -s $OUTPUT ]; then 403 cat $OUTPUT 404 fi 405 if [ $umaskset = "no" ] ; then 406 printf "\tRoot csh startup files do not set the umask.\n" 407 fi 408 fi 409 410 umaskset=no 411 list="/etc/profile ${rhome}/.profile" 412 for i in $list; do 413 if [ -f $i ] ; then 414 if egrep umask $i > /dev/null ; then 415 umaskset=yes 416 fi 417 egrep umask $i | 418 awk '$2 ~ /^.$/ || $2 ~ /[^2367].$/ \ 419 { print "\tRoot umask is group writable" } \ 420 $2 ~ /[^2367]$/ \ 421 { print "\tRoot umask is other writable" }' 422 SAVE_PATH=$PATH 423 unset PATH 424 /bin/sh << end-of-sh > /dev/null 2>&1 425 . $i 426 list=\$(echo \$PATH | /usr/bin/sed -e \ 427 's/^:/.:/;s/:$/:./;s/::/:.:/g;s/:/ /g') 428 /bin/ls -ldgT \$list > $TMP1 429 end-of-sh 430 export PATH=$SAVE_PATH 431 awk '{ 432 if ($10 ~ /^\.$/) { 433 print "\tThe root path includes ."; 434 next; 435 } 436 } 437 $1 ~ /^d....w/ \ 438 { print "\tRoot path directory " $10 " is group writable." } \ 439 $1 ~ /^d.......w/ \ 440 { print "\tRoot path directory " $10 " is other writable." }' \ 441 < $TMP1 442 443 fi 444 done > $OUTPUT 445 if [ $umaskset = "no" -o -s $OUTPUT ] ; then 446 printf "\nChecking root sh paths, umask values:\n$list\n" 447 if [ -s $OUTPUT ]; then 448 cat $OUTPUT 449 fi 450 if [ $umaskset = "no" ] ; then 451 printf "\tRoot sh startup files do not set the umask.\n" 452 fi 453 fi 454 fi 455 456 # Root and uucp should both be in /etc/ftpusers. 457 # 458 if checkyesno check_ftpusers; then 459 list="uucp "$(awk '$2 == 0 { print $1 }' $MPBYUID) 460 for i in $list; do 461 if /usr/libexec/ftpd -C $i ; then 462 printf "\t$i is not denied\n" 463 fi 464 done > $OUTPUT 465 if [ -s $OUTPUT ]; then 466 printf "\nChecking the /etc/ftpusers configuration:\n" 467 cat $OUTPUT 468 fi 469 fi 470 471 # Uudecode should not be in the /etc/mail/aliases file. 472 # 473 if checkyesno check_aliases; then 474 for f in /etc/mail/aliases /etc/aliases; do 475 if [ -f $f ] && egrep '^[^#]*(uudecode|decode).*\|' $f; then 476 printf "\nEntry for uudecode in $f file.\n" 477 fi 478 done 479 fi 480 481 # Files that should not have + signs. 482 # 483 if checkyesno check_rhosts; then 484 list="/etc/hosts.equiv /etc/hosts.lpd" 485 for f in $list ; do 486 if [ -f $f ] && egrep '\+' $f > /dev/null ; then 487 printf "\nPlus sign in $f file.\n" 488 fi 489 done 490 491 # Check for special users with .rhosts files. Only root and toor should 492 # have .rhosts files. Also, .rhosts files should not have plus signs. 493 awk -F: '$1 != "root" && $1 != "toor" && \ 494 ($3 < 100 || $1 == "ftp" || $1 == "uucp") \ 495 { print $1 " " $9 }' $MP | 496 sort -k2 | 497 while read uid homedir; do 498 if [ -f ${homedir}/.rhosts ] ; then 499 rhost=$(ls -ldgT ${homedir}/.rhosts) 500 printf -- "$uid: $rhost\n" 501 fi 502 done > $OUTPUT 503 if [ -s $OUTPUT ] ; then 504 printf "\nChecking for special users with .rhosts files.\n" 505 cat $OUTPUT 506 fi 507 508 while read uid homedir; do 509 if [ -f ${homedir}/.rhosts -a -r ${homedir}/.rhosts ] && \ 510 cat -f ${homedir}/.rhosts | egrep '\+' > /dev/null ; then 511 printf -- "$uid: + in .rhosts file.\n" 512 fi 513 done < $MPBYPATH > $OUTPUT 514 if [ -s $OUTPUT ] ; then 515 printf "\nChecking .rhosts files syntax.\n" 516 cat $OUTPUT 517 fi 518 fi 519 520 # Check home directories. Directories should not be owned by someone else 521 # or writable. 522 # 523 if checkyesno check_homes; then 524 checkyesno check_homes_permit_usergroups && \ 525 permit_usergroups=1 || permit_usergroups=0 526 while read uid homedir; do 527 if [ -d ${homedir}/ ] ; then 528 file=$(ls -ldgT ${homedir}) 529 printf -- "$uid $file\n" 530 fi 531 done < $MPBYPATH | 532 awk -v "usergroups=$permit_usergroups" ' 533 $1 != $4 && $4 != "root" \ 534 { print "user " $1 " home directory is owned by " $4 } 535 $2 ~ /^d....w/ && (!usergroups || $5 != $1) \ 536 { print "user " $1 " home directory is group writable" } 537 $2 ~ /^d.......w/ \ 538 { print "user " $1 " home directory is other writable" }' \ 539 > $OUTPUT 540 if [ -s $OUTPUT ] ; then 541 printf "\nChecking home directories.\n" 542 cat $OUTPUT 543 fi 544 545 # Files that should not be owned by someone else or readable. 546 list=".Xauthority .netrc .ssh/id_dsa .ssh/id_rsa .ssh/identity" 547 while read uid homedir; do 548 for f in $list ; do 549 file=${homedir}/${f} 550 if [ -f $file ] ; then 551 printf -- "$uid $f $(ls -ldgT $file)\n" 552 fi 553 done 554 done < $MPBYPATH | 555 awk -v "usergroups=$permit_usergroups" ' 556 $1 != $5 && $5 != "root" \ 557 { print "user " $1 " " $2 " file is owned by " $5 } 558 $3 ~ /^-...r/ && (!usergroups || $6 != $1) \ 559 { print "user " $1 " " $2 " file is group readable" } 560 $3 ~ /^-......r/ \ 561 { print "user " $1 " " $2 " file is other readable" } 562 $3 ~ /^-....w/ && (!usergroups || $6 != $1) \ 563 { print "user " $1 " " $2 " file is group writable" } 564 $3 ~ /^-.......w/ \ 565 { print "user " $1 " " $2 " file is other writable" }' \ 566 > $OUTPUT 567 568 # Files that should not be owned by someone else or writable. 569 list=".bash_history .bash_login .bash_logout .bash_profile .bashrc \ 570 .cshrc .emacs .exrc .forward .history .k5login .klogin .login \ 571 .logout .profile .qmail .rc_history .rhosts .shosts ssh .tcshrc \ 572 .twmrc .xinitrc .xsession .ssh/authorized_keys \ 573 .ssh/authorized_keys2 .ssh/config .ssh/id_dsa.pub \ 574 .ssh/id_rsa.pub .ssh/identity.pub .ssh/known_hosts \ 575 .ssh/known_hosts2" 576 while read uid homedir; do 577 for f in $list ; do 578 file=${homedir}/${f} 579 if [ -f $file ] ; then 580 printf -- "$uid $f $(ls -ldgT $file)\n" 581 fi 582 done 583 done < $MPBYPATH | 584 awk -v "usergroups=$permit_usergroups" ' 585 $1 != $5 && $5 != "root" \ 586 { print "user " $1 " " $2 " file is owned by " $5 } 587 $3 ~ /^-....w/ && (!usergroups || $6 != $1) \ 588 { print "user " $1 " " $2 " file is group writable" } 589 $3 ~ /^-.......w/ \ 590 { print "user " $1 " " $2 " file is other writable" }' \ 591 >> $OUTPUT 592 if [ -s $OUTPUT ] ; then 593 printf "\nChecking dot files.\n" 594 cat $OUTPUT 595 fi 596 fi 597 598 # Mailboxes should be owned by user and unreadable. 599 # 600 if checkyesno check_varmail; then 601 ls -lA /var/mail | \ 602 awk ' NR == 1 { next; } 603 $9 ~ /^\./ {next; } 604 $3 != $9 { 605 print "user " $9 " mailbox is owned by " $3 606 } 607 $1 != "-rw-------" { 608 print "user " $9 " mailbox is " $1 ", group " $4 609 }' > $OUTPUT 610 if [ -s $OUTPUT ] ; then 611 printf "\nChecking mailbox ownership.\n" 612 cat $OUTPUT 613 fi 614 fi 615 616 # NFS exports shouldn't be globally exported 617 # 618 if checkyesno check_nfs && [ -f /etc/exports ]; then 619 awk '{ 620 # ignore comments and blank lines 621 if ($0 ~ /^\#/ || $0 ~ /^$/ ) 622 next; 623 # manage line continuation 624 while ($NF ~ /^\\$/) { 625 $NF = ""; 626 line = $0 ""; 627 getline; 628 $0 = line $0 ""; 629 } 630 631 delete dir; 632 readonly = ndir = 0; 633 for (i = 1; i <= NF; ++i) { 634 if ($i ~ /^\//) dir[ndir++] = $i; 635 else if ($i ~ /^-/) { 636 if ($i ~ /^-(ro|o)$/) readonly = 1; 637 if ($i ~ /^-network/) next; 638 } 639 else next; 640 } 641 if (readonly) 642 for (item in dir) 643 rodir[nrodir++] = dir[item]; 644 else 645 for (item in dir) 646 rwdir[nrwdir++] = dir[item]; 647 648 } 649 650 END { 651 if (nrodir) { 652 printf("Globally exported file system%s, read-only:\n", 653 nrodir > 1 ? "s" : ""); 654 for (item in rodir) 655 printf("\t%s\n", rodir[item]); 656 } 657 if (nrwdir) { 658 printf("Globally exported file system%s, read-write:\n", 659 nrwdir > 1 ? "s" : ""); 660 for (item in rwdir) 661 printf("\t%s\n", rwdir[item]); 662 } 663 }' < /etc/exports > $OUTPUT 664 if [ -s $OUTPUT ] ; then 665 printf "\nChecking for globally exported file systems.\n" 666 cat $OUTPUT 667 fi 668 fi 669 670 # Display any changes in setuid files and devices. 671 # 672 if checkyesno check_devices; then 673 > $ERR 674 ( 675 676 # Convert check_devices_ignore_fstypes="foo !bar bax" 677 # into "-fstype foo -o ! -fstype bar -o -fstype bax" 678 # and check_devices_ignore_paths="/foo !/bar /bax" 679 # into " -path /foo -o ! -path /bar -o -path /bax" 680 # 681 ignexpr=$(\ 682 echo $check_devices_ignore_fstypes | \ 683 sed -e's/\(!*\)\([^[:space:]]\{1,\}\)/-o \1 -fstype \2/g' ; \ 684 echo $check_devices_ignore_paths | \ 685 sed -e's/\(!*\)\([^[:space:]]\{1,\}\)/-o \1 -path \2/g' \ 686 ) 687 688 # Massage the expression into ( $ignexpr ) -a -prune -o 689 if [ -n "${ignexpr}" ]; then 690 ignexpr=$(\ 691 echo $ignexpr | \ 692 sed -e 's/^-o /( /' \ 693 -e 's/$/ ) -a -prune -o/' \ 694 ) 695 fi 696 697 find / $ignexpr \ 698 \( \( -perm -u+s -a ! -type d \) -o \ 699 \( -perm -g+s -a ! -type d \) -o \ 700 -type b -o -type c \) -print0 | \ 701 xargs -0 ls -ldgTq | sort +9 > $LIST 702 703 ) 2> $OUTPUT 704 705 # Display any errors that occurred during system file walk. 706 if [ -s $OUTPUT ] ; then 707 printf "Setuid/device find errors:\n" >> $ERR 708 cat $OUTPUT >> $ERR 709 printf "\n" >> $ERR 710 fi 711 712 # Display any changes in the setuid file list. 713 egrep -v '^[bc]' $LIST > $TMP1 714 if [ -s $TMP1 ] ; then 715 # Check to make sure uudecode isn't setuid. 716 if grep -w uudecode $TMP1 > /dev/null ; then 717 printf "\nUudecode is setuid.\n" >> $ERR 718 fi 719 720 file=$work_dir/setuid 721 migrate_file "$backup_dir/setuid" "$file" 722 CUR=${file}.current 723 BACK=${file}.backup 724 if [ -s $CUR ] ; then 725 if cmp -s $CUR $TMP1 ; then 726 : 727 else 728 > $TMP2 729 join -110 -210 -v2 $CUR $TMP1 > $OUTPUT 730 if [ -s $OUTPUT ] ; then 731 printf "Setuid additions:\n" >> $ERR 732 tee -a $TMP2 < $OUTPUT >> $ERR 733 printf "\n" >> $ERR 734 fi 735 736 join -110 -210 -v1 $CUR $TMP1 > $OUTPUT 737 if [ -s $OUTPUT ] ; then 738 printf "Setuid deletions:\n" >> $ERR 739 tee -a $TMP2 < $OUTPUT >> $ERR 740 printf "\n" >> $ERR 741 fi 742 743 sort -k10 $TMP2 $CUR $TMP1 | \ 744 sed -e 's/[ ][ ]*/ /g' | \ 745 uniq -u > $OUTPUT 746 if [ -s $OUTPUT ] ; then 747 printf "Setuid changes:\n" >> $ERR 748 column -t $OUTPUT >> $ERR 749 printf "\n" >> $ERR 750 fi 751 752 backup_file update $TMP1 $CUR $BACK 753 fi 754 else 755 printf "Setuid additions:\n" >> $ERR 756 column -t $TMP1 >> $ERR 757 printf "\n" >> $ERR 758 backup_file add $TMP1 $CUR $BACK 759 fi 760 fi 761 762 # Check for block and character disk devices that are readable or 763 # writable or not owned by root.operator. 764 >$TMP1 765 DISKLIST="ccd ch hk hp ld md ra raid rb rd rl rx \ 766 sd se ss uk up vnd wd xd xy" 767 # DISKLIST="$DISKLIST ct mt st wt" 768 for i in $DISKLIST; do 769 egrep "^b.*/${i}[0-9][0-9]*[a-p]$" $LIST >> $TMP1 770 egrep "^c.*/r${i}[0-9][0-9]*[a-p]$" $LIST >> $TMP1 771 done 772 773 awk '$3 != "root" || $4 != "operator" || $1 !~ /.rw-r-----/ \ 774 { printf "Disk %s is user %s, group %s, permissions %s.\n", \ 775 $11, $3, $4, $1; }' < $TMP1 > $OUTPUT 776 if [ -s $OUTPUT ] ; then 777 printf "\nChecking disk ownership and permissions.\n" >> $ERR 778 cat $OUTPUT >> $ERR 779 printf "\n" >> $ERR 780 fi 781 782 # Display any changes in the device file list. 783 egrep '^[bc]' $LIST | sort -k11 > $TMP1 784 if [ -s $TMP1 ] ; then 785 file=$work_dir/device 786 migrate_file "$backup_dir/device" "$file" 787 CUR=${file}.current 788 BACK=${file}.backup 789 790 if [ -s $CUR ] ; then 791 if cmp -s $CUR $TMP1 ; then 792 : 793 else 794 > $TMP2 795 join -111 -211 -v2 $CUR $TMP1 > $OUTPUT 796 if [ -s $OUTPUT ] ; then 797 printf "Device additions:\n" >> $ERR 798 tee -a $TMP2 < $OUTPUT >> $ERR 799 printf "\n" >> $ERR 800 fi 801 802 join -111 -211 -v1 $CUR $TMP1 > $OUTPUT 803 if [ -s $OUTPUT ] ; then 804 printf "Device deletions:\n" >> $ERR 805 tee -a $TMP2 < $OUTPUT >> $ERR 806 printf "\n" >> $ERR 807 fi 808 809 # Report any block device change. Ignore 810 # character devices, only the name is 811 # significant. 812 cat $TMP2 $CUR $TMP1 | \ 813 sed -e '/^c/d' | \ 814 sort -k11 | \ 815 sed -e 's/[ ][ ]*/ /g' | \ 816 uniq -u > $OUTPUT 817 if [ -s $OUTPUT ] ; then 818 printf "Block device changes:\n" >> $ERR 819 column -t $OUTPUT >> $ERR 820 printf "\n" >> $ERR 821 fi 822 823 backup_file update $TMP1 $CUR $BACK 824 fi 825 else 826 printf "Device additions:\n" >> $ERR 827 column -t $TMP1 >> $ERR 828 printf "\n" >> $ERR 829 backup_file add $TMP1 $CUR $BACK >> $ERR 830 fi 831 fi 832 if [ -s $ERR ] ; then 833 printf "\nChecking setuid files and devices:\n" 834 cat $ERR 835 printf "\n" 836 fi 837 fi 838 839 # Check special files. 840 # Check system binaries. 841 # 842 # Create the mtree tree specifications using: 843 # mtree -cx -pDIR -kmd5,uid,gid,mode,nlink,size,link,time > DIR.secure 844 # chown root:wheel DIR.secure 845 # chmod u+r,go= DIR.secure 846 # 847 # Note, this is not complete protection against Trojan horsed binaries, as 848 # the hacker can modify the tree specification to match the replaced binary. 849 # For details on really protecting yourself against modified binaries, see 850 # the mtree(8) manual page. 851 # 852 if checkyesno check_mtree; then 853 if checkyesno check_mtree_follow_symlinks; then 854 check_mtree_flags="-L" 855 else 856 check_mtree_flags="" 857 fi 858 mtree -e -l -p / $check_mtree_flags -f $SPECIALSPEC 3>&1 >$OUTPUT 2>&3 | 859 grep -v '^mtree: dev/tty: Device not configured$' >&2 860 if [ -s $OUTPUT ]; then 861 printf "\nChecking special files and directories.\n" 862 cat $OUTPUT 863 fi 864 865 for file in /etc/mtree/*.secure; do 866 [ $file = '/etc/mtree/*.secure' ] && continue 867 tree=$(sed -n -e '3s/.* //p' -e 3q $file) 868 mtree $check_mtree_flags -f $file -p $tree > $TMP1 869 if [ -s $TMP1 ]; then 870 printf "\nChecking $tree:\n" 871 cat $TMP1 872 fi 873 done > $OUTPUT 874 if [ -s $OUTPUT ]; then 875 printf "\nChecking system binaries:\n" 876 cat $OUTPUT 877 fi 878 fi 879 880 # Backup disklabels of available disks 881 # 882 if checkyesno check_disklabels; then 883 # migrate old disklabels 884 for file in $(ls -1d $backup_dir/$backup_dir/disklabel.* \ 885 $backup_dir/disklabel.* 2>/dev/null); do 886 migrate_file "$file" "$work_dir/${file##*/}" 887 done 888 889 # generate list of old disklabels, fdisks & wedges and remove them 890 ls -1d $work_dir/disklabel.* $work_dir/fdisk.* $work_dir/wedges.* 2>/dev/null | 891 egrep -v '\.(backup|current)(,v)?$' > $LABELS 892 xargs rm < $LABELS 893 894 # generate disklabels of all disks excluding: cd dk fd md st 895 disks=$(iostat -x | awk 'NR > 1 && $1 !~ /^[cfm]d|dk|st|nfs/ { print $1; }') 896 for i in $disks; do 897 disklabel $i > "$work_dir/disklabel.$i" 2>/dev/null 898 done 899 900 # if fdisk is available, generate fdisks for: ed ld sd wd 901 if [ -x /sbin/fdisk ]; then 902 disks=$(iostat -x | awk 'NR > 1 && $1 ~ /^[elsw]d/ { print $1; }') 903 for i in $disks; do 904 /sbin/fdisk $i > "$work_dir/fdisk.$i" 2>/dev/null 905 done 906 fi 907 908 # if dkctl is available, generate dkctl listwedges for: ed ld sd wd cgd ofdisk ra rl raid 909 if [ -x /sbin/dkctl ]; then 910 disks=$(iostat -x | awk 'NR > 1 && $1 ~ /^[elsw]d|cgd|ofdisk|r[al]|raid/ { print $1; }') 911 for i in $disks; do 912 /sbin/dkctl $i listwedges > "$work_dir/wedges.$i" 2>/dev/null 913 done 914 fi 915 916 # append list of new disklabels, fdisks and wedges 917 ls -1d $work_dir/disklabel.* $work_dir/fdisk.* $work_dir/wedges.* 2>/dev/null | 918 egrep -v '\.(backup|current)(,v)?$' >> $LABELS 919 CHANGELIST="$LABELS $CHANGELIST" 920 fi 921 922 if checkyesno check_lvm; then 923 924 # generate list of existing LVM elements Physical Volumes, Volume Groups and Logical Volumes. 925 if [ -x /sbin/lvm ]; then 926 lvm pvdisplay -m >"$work_dir/lvm.pv" 2>/dev/null 927 lvm vgdisplay -m >"$work_dir/lvm.vg" 2>/dev/null 928 lvm lvdisplay -m >"$work_dir/lvm.lv" 2>/dev/null 929 fi 930 ls -1d $work_dir/lvm.* 2>/dev/null | 931 egrep -v '\.(backup|current)(,v)?$'>> $LVM_LABELS 932 CHANGELIST="$CHANGELIST $LVM_LABELS" 933 fi 934 935 # Check for changes in the list of installed pkgs 936 # 937 if checkyesno check_pkgs && have_pkgs; then 938 pkgs=$work_dir/pkgs 939 migrate_file "$backup_dir/pkgs" "$pkgs" 940 pkg_dbdir=$(${pkg_admin} config-var PKG_DBDIR) 941 : ${pkg_dbdir:=/var/db/pkg} 942 ( cd $pkg_dbdir 943 $pkg_info | sort 944 echo "" 945 find . \( -name +REQUIRED_BY -o -name +CONTENTS \) -print0 | 946 xargs -0 ls -ldgTq | sort -t. +1 | sed -e 's, \./, ,' 947 ) > $pkgs 948 echo "$pkgs" > $PKGS 949 CHANGELIST="$PKGS $CHANGELIST" 950 fi 951 952 # List of files that get backed up and checked for any modifications. 953 # Any changes cause the files to rotate. 954 # 955 if checkyesno check_changelist ; then 956 mtree -D -k type -f $SPECIALSPEC -E exclude | 957 sed '/^type=file/!d ; s/type=file \.//' | unvis > $CHANGEFILES 958 959 ( 960 # Add other files which might dynamically exist: 961 # /etc/ifconfig.* 962 # /etc/raid*.conf 963 # /etc/rc.d/* 964 # /etc/rc.conf.d/* 965 # 966 echo "/etc/ifconfig.*" 967 echo "/etc/raid*.conf" 968 echo "/etc/rc.d/*" 969 echo "/etc/rc.conf.d/*" 970 echo "/etc/lvm/backup/*" 971 echo "/etc/lvm/archive/*" 972 973 # Add /etc/changelist 974 # 975 if [ -s /etc/changelist ]; then 976 grep -v '^#' /etc/changelist 977 fi 978 ) | while read file; do 979 case "$file" in 980 *[\*\?\[]*) # If changelist line is a glob ... 981 # ... expand possible backup files 982 # 983 ls -1d $(echo $backup_dir/${file}.current) 2>/dev/null \ 984 | sed "s,^$backup_dir/,, ; s,\.current$,," 985 986 # ... expand possible files 987 # 988 ls -1d $(echo $file) 2>/dev/null 989 ;; 990 *) 991 # Otherwise, just print the filename 992 echo $file 993 ;; 994 esac 995 done >> $CHANGEFILES 996 CHANGELIST="$CHANGEFILES $CHANGELIST" 997 fi 998 999 # Special case backups, including the master password file and 1000 # ssh private host keys. The normal backup mechanisms for 1001 # $check_changelist (see below) also print out the actual file 1002 # differences and we don't want to do that for these files 1003 # 1004 echo $MP > $TMP1 # always add /etc/master.passwd 1005 mtree -D -k type -f $SPECIALSPEC -I nodiff | 1006 sed '/^type=file/!d ; s/type=file \.//' | unvis >> $TMP1 1007 grep -v '^$' $TMP1 | sort -u > $TMP2 1008 1009 while read file; do 1010 backup_and_diff "$file" no 1011 done < $TMP2 1012 1013 1014 if [ -n "$CHANGELIST" ]; then 1015 grep -h -v '^$' $CHANGELIST | sort -u > $TMP1 1016 comm -23 $TMP1 $TMP2 | while read file; do 1017 backup_and_diff "$file" yes 1018 done 1019 fi 1020 1021 if have_pkgs; then 1022 if checkyesno check_pkg_vulnerabilities; then 1023 ${pkg_admin} ${_compat_K_flag} audit >${OUTPUT} 2>&1 1024 if [ -s ${OUTPUT} ]; then 1025 printf "\nInstalled vulnerable packages:\n" 1026 cat ${OUTPUT} 1027 fi 1028 fi 1029 1030 if checkyesno check_pkg_signatures; then 1031 ${pkg_admin} ${_compat_K_flag} check >${OUTPUT} 2>&1 1032 if [ $? -ne 0 ]; then 1033 printf "\nFiles with invalid signatures:\n" 1034 cat ${OUTPUT} 1035 fi 1036 fi 1037 fi 1038 1039 if [ -f /etc/security.local ]; then 1040 . /etc/security.local > $OUTPUT 2>&1 1041 if [ -s $OUTPUT ] ; then 1042 printf "\nRunning /etc/security.local:\n" 1043 cat $OUTPUT 1044 fi 1045 fi 1046
Indexes created Thu Oct 02 14:10:14 GMT 2025