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https://gitlab.com/kalilinux/packages/unix-privesc-check.git
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119 lines
4.0 KiB
Bash
Executable File
119 lines
4.0 KiB
Bash
Executable File
#!/bin/sh
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# $Revision: 310 $
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#
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# (c) Tim Brown, 2012
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# <mailto:timb@nth-dimension.org.uk>
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# <http://www.nth-dimension.org.uk/> / <http://www.machine.org.uk/>
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#
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# List group-writable and world-writable system libraries and their
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# parent directories
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. lib/misc/file
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. lib/misc/group
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. lib/misc/linker
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. lib/misc/permission
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. lib/misc/stdio
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. lib/misc/user
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system_libraries_init () {
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stdio_message_log "system_libraries" "Starting at: `date`"
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}
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system_libraries_permissions () {
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filename="${1}"
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permissions="${2}"
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userid="${3}"
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groupid="${4}"
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systemfilename="${5}"
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case "${permissions}" in
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????????w?)
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if [ "`permission_is_world_writable_sticky_bit \"${permissions}\"`" -eq 1 ]
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then
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stdio_message_log "system_libraries" "(${systemfilename}) ${filename} is owned by user ${userid} (group ${groupid}) and is world-writable with sticky bit (${permissions})"
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else
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stdio_message_warn "system_libraries" "(${systemfilename}) ${filename} is owned by user ${userid} (group ${groupid}) and is world-writable (${permissions})"
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fi
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;;
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?????w????)
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if [ "`group_is_in_group_name \"${groupid}\"`" -eq 1 ]
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then
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stdio_message_warn "system_libraries" "(${systemfilename}) ${filename} is owned by user ${userid} (group ${groupid}: YOU) and is group-writable (${permissions})"
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else
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stdio_message_log "system_libraries" "(${systemfilename}) ${filename} is owned by user ${userid} (group ${groupid}) and is group-writable (${permissions})"
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fi
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;;
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??w???????)
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if [ "`user_is_user_root \"${userid}\"`" -ne 1 -a "`user_show_user_name`" = "${userid}" ]
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then
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stdio_message_debug "system_libraries" "(${systemfilename}) ${filename} is owned by user ${userid} (YOU) (group ${groupid}), non-root user (${permissions})"
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elif [ "`user_is_user_root \"${userid}\"`" -ne 1 ]
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then
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stdio_message_log "system_libraries" "(${systemfilename}) ${filename} is owned by user ${userid} (group ${groupid}), non-root user (${permissions})"
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fi
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;;
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esac
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}
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system_libraries_traverse () {
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systemfilename="${1}"
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file_parent_traverse "${systemfilename}" | while read filepath
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do
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file_show_non_symlink_perms " ${filepath}$" | while read filename permissions userid groupid
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do
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system_libraries_permissions "${filename}" "${permissions}" "${userid}" "${groupid}" "${systemfilename}"
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done
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done
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}
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system_libraries_wrapper () {
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systemfilename="${1}"
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file_show_non_symlink_perms " ${systemfilename}" | while read filename permissions userid groupid
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do
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system_libraries_permissions "${filename}" "${permissions}" "${userid}" "${groupid}" "${systemfilename}"
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done
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system_libraries_traverse "${systemfilename}"
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}
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system_libraries_main () {
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linker_list_system_filenames | while read filename
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do
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if [ ! -e "${filename}" ]
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then
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stdio_message_warn "system_libraries" "${filename} does not exist, checking parent path directories' permissions"
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system_libraries_traverse "${filename}"
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continue
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fi
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if [ -h "${filename}" ]
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then
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linkedfilename="`file_show_symlinked_filename "${filename}"`"
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if [ -e "${linkedfilename}" ]
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then
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#stdio_message_debug "system_libraries" "${filename} is a symlink to ${linkedfilename}"
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system_libraries_wrapper "${linkedfilename}"
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fi
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else
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system_libraries_wrapper "${filename}"
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fi
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done
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}
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system_libraries_fini () {
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stdio_message_log "system_libraries" "Ending at: `date`"
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}
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