/usr/lib/tiger/systems/Linux/2/check_xinetd is in tiger 1:3.2.3-12.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 | #!/bin/sh
#
# tiger - A UN*X security checking system
# Copyright (C) 2003 Michael Sconzo, Javier Fernandez-Sanguino Peña,
# Ryan Bradetich
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 1, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# Please see the file `COPYING' for the complete copyright notice.
#
# check_xinetd - 02/11/2003
#
# Checks which xinetd services are enabled or disabled.
#
# 05/02/2004 jfs Try to avoid eval problems if handling variables with
# special characters (such as space)
# 01/15/2004 - jfs - Fixed syntax error (at least in RH 8) and added TODO
# 11/19/2003 - jfs - Linux-specific version based on patch from Ryan
# Bradetich which introduces many more checks for services and
# configuration (but still more is needed). Added many TODOs.
# 08/19/2003 - jfs - Allow override of XINETDCONF and fix error
# 08/12/2003 - jfs - Now write messages for disabled services too. Also
# fixed some errors.
# 08/11/2003 - jfs - Fixed dependancies. Now uses XINETDFILE instead of
# hardcoding the location. Added additional checks
# to avoid errors and use message instead of echo.
#
#-----------------------------------------------------------------------------
# TODO:
#
# - this script can emit false positives for services that are redirected
# (i.e. no 'server' flag but a 'redirect' flag)
# - it could warn for servers that are not restricted by TCP wrappers
# (nees to check if server = tcpd)
# - should check whether some services use log_on_failure or log_on_success
# - info for services that are chrooted (server = chroot)
# - do not warn for services which are bound to 127.0.0.1?
# - xinetd checks should determine if insecure services are active or
# running as root when not needed.
# - should check the server binaries it points to. Are they properly
# owned?
# - consider generating a file based on the xinetd.conf similar to
# how it's done with GEN_INETD_SERVICES
# - it could also check vs the tiger's provided operating system's
# XINETDFILE to determine changes in services just as check_inetd does
#
#-----------------------------------------------------------------------------
#
TigerInstallDir="/usr/lib/tiger"
#
# Set default base directory.
# Order or preference:
# -B option
# TIGERHOMEDIR environment variable
# TigerInstallDir installed location
#
basedir=${TIGERHOMEDIR:=$TigerInstallDir}
for parm
do
case $parm in
-B) basedir=$2; break;;
esac
done
#
# Verify that a config file exists there, and if it does
# source it.
#
[ ! -r $basedir/config ] && {
echo "--ERROR-- [init002e] No 'config' file in \`$basedir'."
exit 1
}
. $basedir/config
. $BASEDIR/initdefs
#
# If run in test mode (-t) this will verify that all required
# elements are set.
#
[ "$Tiger_TESTMODE" = 'Y' ] && {
haveallcmds LS || exit 1
haveallfiles BASEDIR || exit 1
echo "--CONFIG-- [init003c] $0: Configuration ok..."
exit 0
}
#------------------------------------------------------------------------
haveallcmds LS || exit 1
haveallfiles BASEDIR || exit 1
echo
echo "# Performing check of 'xinetd' related services..."
# Set the default location for xinetd.conf if not specified.
[ -z "$XINETDCONF" ] && XINETDCONF="/etc/xinetd.conf"
check_file_perms()
{
getpermit $1 |
while read _namefile _owner _group ur uw ux gr gw gx or ow ox suid sgid stk
do
eval "case \"$_owner\" in
$Tiger_ROOT_PATH_OK_Owners)
;;
*)
message FAIL inet020f \"\" \"$_namefile does not have proper ownership (owned by $_owner).\"
;;
esac"
[ "$ur$uw$ux$gr$gw$gx$or$ow$ox" != '110000000' ] && \
message WARN inet017w "" "$_namefile permissions are not 600."
eval "case \"$_group\" in
$Tiger_ROOT_PATH_OK_Group_Write)
gw=0
esac"
[ "$gw" != '0' ] && \
message WARN inet018w "" "$_namefile has non-administrative group ($_group) write access."
[ "$ow" != '0' ] && \
message ALERT inet019a "" "$_namefile public write access."
done
}
parse_service_block()
{
service=$1
enabled='Y'
proto='all'
while read line
do
line="${line%%\#*}"
[ -z "$line" ] && continue
line=`echo $line`
attrib="${line%% *}"
case "$attrib" in
flags)
for flag in $line
do
[ $flag = 'DISABLE' ] && enabled='N'
done
;;
disable)
[ "${line##* }" = 'yes' ] && enabled='N'
;;
protocol)
proto=${line#*= }
;;
\})
break
;;
esac
done
if [ "$service" = 'rexd' -a $enabled = 'Y' ]; then
message FAIL inet006f "" "'rexd' service is enabled, consider disabling it."
elif [ "$service" = 'exec' -a $enabled = 'Y' ]; then
message FAIL inet006f "" "'$service' service is enabled, consider disabling it."
elif [ "$service" = 'sysstat' -a $enabled = 'Y' ]; then
message WARN inet012w "" "'sysstat' service is enabled, consider disabling it."
elif [ "$service" = 'netstat' -a $enabled = 'Y' ]; then
message WARN inet013w "" "'netstat' service is enabled, consider disabling it."
elif [ "$service" = 'linuxconf' -a $enabled = 'Y' ]; then
message WARN inet026w "" "'linuxconf' service is enabled, consider disabling it."
elif [ "$service" = 'auth' -a $enabled = 'Y' ]; then
message WARN inet027w "" "The 'identd or auth' service is enabled, consider disabling it."
elif [ "$service" = 'telnet' -a $enabled = 'Y' ]; then
message WARN inet098w "" "The 'telnet' server is enabled, consider using ssh instead."
elif [ "$service" = 'ftp' -a $enabled = 'Y' ]; then
message WARN inet098w "" "The 'ftp' server is enabled, consider using ssh/sftp instead."
elif [ "$service" = 'login' -a $enabled = 'Y' ]; then
message WARN inet098w "" "The 'login' server is enabled, consider using ssh/sftp instead."
elif [ "$service" = 'shell' -a $enabled = 'Y' ]; then
message WARN inet098w "" "The 'rsh' server is enabled, consider using ssh/sftp instead."
elif [ "$service" = 'tftp' -a $enabled = 'Y' ]; then
message WARN inet022w "" "The 'tftpd' server is enabled, consider disabling it"
elif [ "$service" = 'finger' -a $enabled = 'Y' ]; then
message WARN inet023w "" "The 'finger' server is enabled, consider disabling it"
elif [ "$service" = 'rusers' -a $enabled = 'Y' ]; then
message WARN inet024w "" "The 'rusers' server is enabled, consider disabling it"
elif [ "$service" = 'echo' -a $proto = 'udp' -a $enabled = 'Y' ]; then
message WARN inet025w "" "The 'echo' udp server is enabled, consider disabling it"
elif [ "$service" = 'chargen' -a $proto = 'udp' -a $enabled = 'Y' ]; then
message WARN inet025w "" "The 'chargen' udp server is enabled, consider disabling it"
fi
}
parse_defaults_block()
{
logging='N'
while read line
do
line="${line%%\#*}"
[ -z "$line" ] && continue
line=`echo $line`
attrib="${line%% *}"
case "$attrib" in
log_*)
logging='Y'
;;
\})
break;
;;
esac
done
[ $logging != 'Y' ] &&
message WARN inet100w "" "xinetd is not configured with logging enabled."
}
parse_file()
{
file=$1
while read line
do
line="${line%%\#*}"
[ -z "$line" ] && continue
line=`echo $line`
attrib="${line%% *}"
case "$attrib" in
includedir)
[ $file = $XINETDCONF ] && dirs="$dirs ${line#* }"
continue
;;
defaults)
parse_defaults_block
continue
;;
service)
parse_service_block ${line#* }
continue
;;
esac
done < $file
}
# Does the XINETDCONF file exist?
[ ! -r "$XINETDCONF" ] && exit 0
check_file_perms $XINETDCONF
parse_file $XINETDCONF
for dir in $dirs
do
[ ! -d "$dir/" ] && {
message FAIL xnet002f "The directory ($dir) included by $XINETDCONF is not a directory."
continue
}
$LS $dir/ 2>/dev/null |
while read path
do
check_file_perms $dir/$path
parse_file $dir/$path
done
done
|