autonomic-cooperative/unix-privesc-check
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Imported Upstream version 1.4~svn361

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Devon Kearns
2012-12-20 15:42:13 -07:00
commit a75bafe602
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lib/checks/devices_permission Executable file
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#!/bin/sh
# $Revision: 336 $
#
# 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 2 of the License, 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.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
# (c) Tim Brown, 2012
# <mailto:timb@nth-dimension.org.uk>
# <http://www.nth-dimension.org.uk/> / <http://www.machine.org.uk/>
#
# Check for world-readable and world-writable permissions on devices files
. lib/misc/device
. lib/misc/file
. lib/misc/stdio
devices_permission_init () {
stdio_message_log "devices_permission" "Starting at: `date`"
}
devices_permission_permissions () {
device="${1}"
mountpoint="`device_get_mountpoint \"${device}\"`"
if [ -n "${mountpoint}" ]
then
message="mounted to ${mountpoint}"
elif [ "`device_is_swap \"${device}\"`" -eq 1 ]
then
message="swap"
else
message="not mounted"
fi
file_show_non_symlink_perms " ${device}$" | while read filename permissions userid groupid
do
case "${permissions}" in
???????rw?)
stdio_message_warn "devices_permission" "device file ${filename} (${message}) is owned by user ${userid} (group ${groupid}) and is world-readable and world-writable (${permissions})"
;;
????????w?)
stdio_message_warn "devices_permission" "device file ${filename} (${message}) is owned by user ${userid} (group ${groupid}) and is world-writable (${permissions})"
;;
???????r??)
stdio_message_warn "devices_permission" "device file ${filename} (${message}) is owned by user ${userid} (group ${groupid}) and is world-readable (${permissions})"
;;
esac
done
}
devices_permission_main () {
device_list | while read device
do
if [ -h "${device}" ]
then
linkeddevice="`file_show_symlinked_filename \"${device}\"`"
if [ -z "${linkeddevice}" ]
then
continue
fi
#stdio_message_debug "devices_permission" "device file ${device} is a symbolic link to ${linkeddevice}"
devices_permission_permissions "${linkeddevice}"
else
devices_permission_permissions "${device}"
fi
done
}
devices_permission_fini () {
stdio_message_log "devices_permission" "Ending at: `date`"
}