prehistoric-systems/lynis
1
0
Fork 0
mirror of https://github.com/CISOfy/lynis.git synced 2026-03-11 08:55:28 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions
lynis/include/tests_authentication
hlein b595cc0fb5 Various cleanups (#363) 
* Typo fix.

* Style change: always use $(), never ``.

The Lynis code already mostly used $(), but backticks were sprinkled
around.  Converted all of them.

* Lots of minor spelling/typo fixes.

FWIW these were found with:

  find . -type f -print0 | xargs -0 cat | aspell list | sort -u | egrep '^[a-z]+$' | less

And then reviewing the list to pick out things that looked like
misspelled words as opposed to variables, etc., and then manual
inspection of context to determine the intention.
2017-03-06 07:41:21 +00:00

1365 lines
68 KiB
Bash
Raw Blame History

#!/bin/sh
#################################################################################
#
# Lynis
# ------------------
#
# Copyright 2007-2013, Michael Boelen
# Copyright 2007-2017, CISOfy
#
# Website : https://cisofy.com
# Blog : http://linux-audit.com
# GitHub : https://github.com/CISOfy/lynis
#
# Lynis comes with ABSOLUTELY NO WARRANTY. This is free software, and you are
# welcome to redistribute it under the terms of the GNU General Public License.
# See LICENSE file for usage of this software.
#
#################################################################################
#
# User, Group and authentication tests
#
#################################################################################
#
LDAP_AUTH_ENABLED=0
LDAP_PAM_ENABLED=0
LDAP_CONF_LOCATIONS="/etc/ldap.conf /etc/ldap/ldap.conf /etc/openldap/ldap.conf /usr/local/etc/ldap.conf /usr/local/etc/openldap/ldap.conf"
PAM_FILE_LOCATIONS="/lib/i386-linux-gnu/security /lib/security /lib/x86_64-linux-gnu/security /lib64/security /usr/lib /usr/lib/security"
SUDOERS_LOCATIONS="/etc/sudoers /usr/local/etc/sudoers /usr/pkg/etc/sudoers"
SUDOERS_FILE=""
#
#################################################################################
#
InsertSection "Users, Groups and Authentication"
# Test : AUTH-9204
# Description : Check users with UID zero (0)
# Notes : Ignores :0: in file if match is in NIS related line
Register --test-no AUTH-9204 --weight L --network NO --category security --description "Check users with an UID of zero"
if [ ${SKIPTEST} -eq 0 ]; then
# Search accounts with UID 0
LogText "Test: Searching accounts with UID 0"
FIND=$(${GREPBINARY} ':0:' /etc/passwd | ${EGREPBINARY} -v '^#|^root:|^(\+:\*)?:0:0:::' | ${CUTBINARY} -d ":" -f1,3 | ${GREPBINARY} ':0')
if [ ! "${FIND}" = "" ]; then
Display --indent 2 --text "- Administrator accounts" --result "${STATUS_WARNING}" --color RED
LogText "Result: Found more than one administrator accounts"
ReportWarning "${TEST_NO}" "Multiple users with UID 0 found in passwd file"
for USER in ${FIND}; do
LogText "Administrator account: ${USER}"
Report "user_with_uid_zero[]=${USER}"
if [ "${USER}" = "toor" ]; then
LogText "BSD note: default there is a user 'toor' installed. This account is considered useless unless it"
LogText "is assigned a password and used for daily operations or emergencies. ie: bad shell for root user."
ReportSuggestion ${TEST_NO} "Use vipw to delete the 'toor' user if not used."
fi
done
else
Display --indent 2 --text "- Administrator accounts" --result "${STATUS_OK}" --color GREEN
LogText "Result: No accounts found with UID 0 other than root."
fi
fi
#
#################################################################################
#
# Test : AUTH-9208
# Description : Check non-unique accounts
Register --test-no AUTH-9208 --weight L --network NO --category security --description "Check non-unique accounts in passwd file"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: Checking for non-unique accounts"
if [ "${OS}" = "DragonFly" -o "${OS}" = "FreeBSD" -o "${OS}" = "NetBSD" -o "${OS}" = "OpenBSD" ]; then
PASSWD_FILE="/etc/master.passwd"
else
PASSWD_FILE="/etc/passwd"
fi
# Check password file
if [ -f ${PASSWD_FILE} ]; then
FIND=$(${GREPBINARY} -v '^#' ${PASSWD_FILE} | ${CUTBINARY} -d ':' -f3 | ${SORTBINARY} | uniq -d)
if [ "${FIND}" = "" ]; then
Display --indent 2 --text "- Unique UIDs" --result "${STATUS_OK}" --color GREEN
LogText "Result: all accounts found in ${PASSWD_FILE} are unique"
else
Display --indent 2 --text "- Unique UIDs" --result "${STATUS_WARNING}" --color RED
LogText "Result: found multiple accounts with same UID"
LogText "Output (non-unique UIDs): ${FIND}"
ReportWarning ${TEST_NO} "Multiple accounts found with same UID"
fi
else
Display --indent 2 --text "- Unique UIDs" --result "${STATUS_SKIPPED}" --color WHITE
LogText "Result: test skipped, ${PASSWD_FILE} file not available"
fi
LogText "Remarks: Non unique UIDs can be a risk for the system or part of a configuration mistake"
fi
#
#################################################################################
#
# Test : AUTH-9212
# Description : Test group file with chkgrp tool (ie FreeBSD)
LogText "Prerequisite test: /usr/sbin/chkgrp"
if [ -x /usr/sbin/chkgrp ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
Register --test-no AUTH-9212 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Test group file"
if [ ${SKIPTEST} -eq 0 ]; then
Display --indent 2 --text "- Checking chkgrp tool" --result "${STATUS_FOUND}" --color GREEN
LogText "Result: /usr/sbin/chkgrp binary found. Using this to perform next test(s)."
LogText "Test: Testing consistency of /etc/group file"
FIND=$(/usr/sbin/chkgrp | ${GREPBINARY} -v 'is fine')
if [ "${FIND}" = "" ]; then
Display --indent 4 --text "- Checking consistency of /etc/group file" --result "${STATUS_OK}" --color GREEN
LogText "Result: chkgrp test performed, Group file seems to be ok."
else
Display --indent 4 --text "- Checking consistency of /etc/group file" --result "${STATUS_WARNING}" --color RED
LogText "Result: chkgrp found some errors. Run the tool manually to see details."
LogText "chkgrp output: ${FIND}"
ReportWarning ${TEST_NO} "chkgrp reported inconsistencies in /etc/group file"
fi
fi
#
#################################################################################
#
# Test : AUTH-9216
# Description : Check /etc/group and shadow group files
# Notes : Run grpck to test group files (most likely /etc/group and shadow group files)
if [ ! "${GRPCKBINARY}" = "" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
Register --test-no AUTH-9216 --preqs-met ${PREQS_MET} --weight L --network NO --root-only YES --category security --description "Check group and shadow group files"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: Checking for grpck binary output"
case ${OS} in
"AIX") FIND=$(${GRPCKBINARY} -n ALL 2> /dev/null ; echo $?) ;;
"Linux")
if [ "${LINUX_VERSION}" = "SuSE" ]; then
FIND=$(${GRPCKBINARY} -q -r > /dev/null ; echo $?)
else
FIND=$(${GRPCKBINARY} -r 2> /dev/null ; echo $?)
fi
;;
*) FIND=$(${GRPCKBINARY} 2> /dev/null ; echo $?) ;;
esac
# Check exit-code
if [ "${FIND}" = "0" ]; then
Display --indent 2 --text "- Consistency of group files (grpck)" --result "${STATUS_OK}" --color GREEN
LogText "Result: grpck binary didn't find any errors in the group files"
else
Display --indent 2 --text "- Consistency of group files (grpck)" --result "${STATUS_WARNING}" --color RED
ReportWarning ${TEST_NO} "grpck binary found errors in one or more group files"
fi
unset FIND
fi
#
#################################################################################
#
# Test : AUTH-9218
# Description : Check login shells for passwordless accounts
# Notes : Results should be checked
Register --test-no AUTH-9218 --os FreeBSD --weight L --network NO --category security --description "Check login shells for passwordless accounts"
if [ ${SKIPTEST} -eq 0 ]; then
FOUND=0
LogText "Test: Checking login shells"
if [ -f /etc/master.passwd ]; then
# Check for all shells, except: (/usr)/sbin/nologin /nonexistent
FIND=$(${GREPBINARY} "[a-z]:\*:" /etc/master.passwd | ${EGREPBINARY} -v '^#|/sbin/nologin|/usr/sbin/nologin|/nonexistent' | ${SEDBINARY} 's/ /!space!/g')
if [ "${FIND}" = "" ]; then
Display --indent 2 --text "- Login shells" --result "${STATUS_OK}" --color GREEN
else
Display --indent 2 --text "- Login shells" --result "${STATUS_WARNING}" --color RED
for LINE in ${FIND}; do
LINE=$(echo ${LINE} | ${SEDBINARY} 's/!space!/ /g')
SHELL=$(echo ${LINE} | ${AWKBINARY} -F: '{ print $10 }')
LogText "Output: ${LINE}"
if [ -z "${SHELL}" ]; then
LogText "Result: found no shell on line"
else
LogText "Result: found possible harmful shell ${SHELL}"
if [ -f ${SHELL} ]; then
LogText "Result: shell ${SHELL} does exist"
FOUND=1
else
LogText "Result: shell ${SHELL} does not exist"
ReportSuggestion ${TEST_NO} "Determine if account is needed, as shell ${SHELL} does not exist"
fi
fi
done
if [ ${FOUND} -eq 1 ]; then
ReportWarning ${TEST_NO} "Possible harmful shell found (for passwordless account!)"
fi
fi
else
Display --indent 2 --text "- Login shells" --result "${STATUS_SKIPPED}" --color WHITE
LogText "Result: No /etc/master.passwd file found"
fi
unset LINE SHELL
fi
#
#################################################################################
#
# Test : AUTH-9489
# Description : Check login shells for passwordless accounts
# Notes : Results should be checked
Register --test-no AUTH-9489 --os DragonFly --weight L --network NO --category security --description "Check login shells for passwordless accounts"
if [ ${SKIPTEST} -eq 0 ]; then
FOUND=0
LogText "Test: Checking login shells"
if [ -f /etc/master.passwd ]; then
# Check for all shells, except: (/usr)/sbin/nologin /nonexistent
FIND=$(${GREPBINARY} "[a-z]:\*:" /etc/master.passwd | ${EGREPBINARY} -v '^#|/sbin/nologin|/usr/sbin/nologin|/nonexistent' | ${SEDBINARY} 's/ /!space!/g')
if [ "${FIND}" = "" ]; then
Display --indent 2 --text "- Login shells" --result "${STATUS_OK}" --color GREEN
else
Display --indent 2 --text "- Login shells" --result "${STATUS_WARNING}" --color RED
for LINE in ${FIND}; do
LINE=$(echo ${LINE} | ${SEDBINARY} 's/!space!/ /g')
SHELL=$(echo ${LINE} | ${AWKBINARY} -F: '{ print $10 }')
LogText "Output: ${LINE}"
if [ -z "${SHELL}" ]; then
LogText "Result: found no shell on line"
else
LogText "Result: found possible harmful shell ${SHELL}"
if [ -f ${SHELL} ]; then
LogText "Result: shell ${SHELL} does exist"
FOUND=1
else
LogText "Result: shell ${SHELL} does not exist"
ReportSuggestion ${TEST_NO} "Determine if account is needed, as shell ${SHELL} does not exist"
fi
fi
done
if [ ${FOUND} -eq 1 ]; then
ReportWarning ${TEST_NO} "Possible harmful shell found (for passwordless account!)"
fi
fi
else
Display --indent 2 --text "- Login shells" --result "${STATUS_SKIPPED}" --color WHITE
LogText "Result: No /etc/master.passwd file found"
fi
unset LINE SHELL
fi
#
#################################################################################
#
# Test : AUTH-9222
# Description : Check unique group IDs
Register --test-no AUTH-9222 --weight L --network NO --category security --description "Check unique groups (IDs)"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: Checking for non unique group ID's in /etc/group"
FIND=$(${GREPBINARY} -v '^#' /etc/group | ${GREPBINARY} -v '^$' | ${AWKBINARY} -F: '{ print $3 }' | ${SORTBINARY} | uniq -d)
if [ -z "${FIND}" ]; then
Display --indent 2 --text "- Unique group IDs" --result "${STATUS_OK}" --color GREEN
LogText "Result: All group ID's are unique"
Report "auth_group_ids_unique=1"
else
Display --indent 2 --text "- Unique group IDs" --result "${STATUS_WARNING}" --color RED
LogText "Result: Found the same group ID multiple times"
for I in ${FIND}; do
Report "auth_groups_nonunique[]=${I}"
LogText "Non-unique group: ${I}"
done
ReportSuggestion ${TEST_NO} "Check your /etc/group file and correct any inconsistencies"
fi
fi
#
#################################################################################
#
# Test : AUTH-9226
# Description : Check unique group names
if [ -f ${ROOTDIR}etc/group ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
Register --test-no AUTH-9226 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check unique group names"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: Checking for non unique group names in ${ROOTDIR}etc/group"
FIND=$(${GREPBINARY} -v '^#' ${ROOTDIR}etc/group | ${GREPBINARY} -v '^$' | ${AWKBINARY} -F: '{ print $1 }' | ${SORTBINARY} | uniq -d)
if [ -z "${FIND}" ]; then
Display --indent 2 --text "- Unique group names" --result "${STATUS_OK}" --color GREEN
LogText "Result: All group names are unique"
Report "auth_group_names_unique=1"
else
Display --indent 2 --text "- Unique group names" --result "${STATUS_WARNING}" --color RED
LogText "Result: Found the same group name multiple times"
for I in ${FIND}; do
Report "auth_groups_nonunique[]=${I}"
LogText "Non-unique group: ${I}"
done
ReportSuggestion ${TEST_NO} "Check your ${ROOTDIR}etc/group file and correct any inconsistencies"
fi
fi
#
#################################################################################
#
# Test : AUTH-9228
# Description : Check password file consistency with pwck
# Notes : Operating systems include Linux, Solaris
if [ -x /usr/sbin/pwck ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
Register --test-no AUTH-9228 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check password file consistency with pwck"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: Checking password file consistency (pwck)"
TESTED=0
case ${OS} in
"Linux")
FIND=$(/usr/sbin/pwck -q -r 2> /dev/null; echo $?)
TESTED=1
;;
"Solaris")
FIND=$(/usr/sbin/pwck 2> /dev/null; echo $?)
TESTED=1
;;
*)
LogText "Dev: found /usr/sbin/pwck, but unsure how to call it on this operating system"
ReportException "${TEST_NO}:1" "Found /usr/sbin/pwck, but unsure how to call it on this operating system"
;;
esac
# Only display if this test has been executed
if [ ${TESTED} -eq 1 -a "${FIND}" = "0" ]; then
Display --indent 2 --text "- Password file consistency" --result "${STATUS_OK}" --color GREEN
LogText "Result: pwck check didn't find any problems"
AddHP 2 2
else
Display --indent 2 --text "- Password file consistency" --result "${STATUS_SUGGESTION}" --color YELLOW
LogText "Result: pwck found one or more errors/warnings in the password file."
ReportSuggestion ${TEST_NO} "Run pwck manually and correct any errors in the password file"
AddHP 0 2
fi
fi
#
#################################################################################
#
# Test : AUTH-9234
# Description : Query user accounts
# Notes : AIX: 100+
# HPUX: 100+
# macOS doesn't have any user info in /etc/passwd, users are managed with opendirectoryd)
# OpenBSD/NetBSD: unknown
# Arch Linux / CentOS / Ubuntu: 1000+
Register --test-no AUTH-9234 --weight L --network NO --category security --description "Query user accounts"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: Read system users (including root user) from password database (e.g. /etc/passwd)"
FIND=""
case ${OS} in
"AIX")
LogText "AIX real users output (ID = 0, or 100+):"
FIND=$(${AWKBINARY} -F: '($3 >= 100 && $3 != 65534) || ($3 == 0) { print $1","$3 }' /etc/passwd)
;;
"FreeBSD")
LogText "FreeBSD real users output (ID = 0, or 1000+, but not 65534):"
FIND=$(${AWKBINARY} -F: '($3 >= 1000 && $3 != 65534) || ($3 == 0) { print $1","$3 }' /etc/passwd)
;;
"Linux")
UID_MIN=""
if [ -f /etc/login.defs ]; then
UID_MIN=$(${GREPBINARY} "^UID_MIN" /etc/login.defs | ${AWKBINARY} '{print $2}')
LogText "Result: found minimal user id specified: ${UID_MIN}"
fi
if [ "${UID_MIN}" = "" ]; then UID_MIN="1000"; fi
LogText "Linux real users output (ID = 0, or ${UID_MIN}+, but not 65534):"
FIND=$(${AWKBINARY} -v UID_MIN="${UID_MIN}" -F: '($3 >= UID_MIN && $3 != 65534) || ($3 == 0) { print $1","$3 }' /etc/passwd)
;;
"macOS")
LogText "macOS real users output (ID = 0, or 500-599) using dscacheutil"
FIND_USERS=$(dscacheutil -q user | ${GREPBINARY} -A 3 -B 2 -e "^uid: 5[0-9][0-9]" | ${GREPBINARY} "^name: " | ${AWKBINARY} '{print $2}')
if [ ! -z "${FIND_USERS}" ]; then
for FUSERNAME in ${FIND_USERS}; do
FDETAILS=$(dscacheutil -q user -a name ${FUSERNAME} | ${GREPBINARY} "^uid: " | ${AWKBINARY} '{print $2}')
FIND="${FUSERNAME},${FDETAILS} ${FIND}"
done
else
FIND=""
fi
;;
"OpenBSD")
LogText "OpenBSD real users output (ID = 0, or 1000-60000, but not 32767):"
FIND=$(${AWKBINARY} -F: '($3 >= 1000 && $3 <= 60000 && $3 != 32767) || ($3 == 0) { print $1","$3 }' /etc/passwd)
;;
"Solaris")
LogText "Solaris real users output (ID =0, or 100+, but not 60001/65534):"
FIND=$(${AWKBINARY} -F: '($3 >= 100 && $3 != 60001 && $3 != 65534) || ($3 == 0) { print $1","$3 }' /etc/passwd)
;;
*)
# Want to help improving Lynis? Determine what user IDs belong to normal user accounts
ReportException "${TEST_NO}:1" "Can not determine user accounts"
;;
esac
# Check if we got any output
if [ -z "${FIND}" ]; then
Display --indent 4 --text "Result: No users found/unknown result"
LogText "Result: Querying of system users skipped"
Display --indent 2 --text "- Query system users (non daemons)" --result "${STATUS_UNKNOWN}" --color YELLOW
else
Display --indent 2 --text "- Query system users (non daemons)" --result "${STATUS_DONE}" --color GREEN
for I in ${FIND}; do
if [ ! -z "${I}" ]; then
LogText "Real user: ${I}"
Report "real_user[]=${I}"
fi
done
fi
fi
#
#################################################################################
#
# Test : AUTH-9240
# Description : Query NIS+ authentication support
Register --test-no AUTH-9240 --weight L --network NO --category security --description "Query NIS+ authentication support"
if [ ${SKIPTEST} -eq 0 ]; then
if [ -f /etc/nsswitch.conf ]; then
FIND=$(${EGREPBINARY} "^passwd" /etc/nsswitch.conf | ${EGREPBINARY} "compat|nisplus")
if [ "${FIND}" = "" ]; then
LogText "Result: NIS+ authentication not enabled"
Display --indent 2 --text "- NIS+ authentication support" --result "NOT ENABLED" --color WHITE
else
FIND2=$(${EGREPBINARY} "^passwd_compat" /etc/nsswitch.conf | ${GREPBINARY} "nisplus")
FIND3=$(${EGREPBINARY} "^passwd" /etc/nsswitch.conf | ${GREPBINARY} "nisplus")
if [ ! "${FIND2}" = "" -o ! "${FIND3}" = "" ]; then
LogText "Result: NIS+ authentication enabled"
Display --indent 2 --text "- NIS+ authentication support" --result "${STATUS_ENABLED}" --color GREEN
else
LogText "Result: NIS+ authentication not enabled"
Display --indent 2 --text "- NIS+ authentication support" --result "NOT ENABLED" --color WHITE
fi
fi
else
LogText "Result: /etc/nsswitch.conf not found"
fi
fi
#
#################################################################################
#
# Test : AUTH-9242
# Description : Query NIS authentication support
Register --test-no AUTH-9242 --weight L --network NO --category security --description "Query NIS authentication support"
if [ ${SKIPTEST} -eq 0 ]; then
if [ -f /etc/nsswitch.conf ]; then
FIND=$(${EGREPBINARY} "^passwd" /etc/nsswitch.conf | ${EGREPBINARY} "compat|nis" | ${GREPBINARY} -v "nisplus")
if [ "${FIND}" = "" ]; then
LogText "Result: NIS authentication not enabled"
Display --indent 2 --text "- NIS authentication support" --result "NOT ENABLED" --color WHITE
else
FIND2=$(${EGREPBINARY} "^passwd_compat" /etc/nsswitch.conf | ${GREPBINARY} "nis" | ${GREPBINARY} -v "nisplus")
FIND3=$(${EGREPBINARY} "^passwd" /etc/nsswitch.conf | ${GREPBINARY} "nis" | ${GREPBINARY} -v "nisplus")
if [ ! "${FIND2}" = "" -o ! "${FIND3}" = "" ]; then
LogText "Result: NIS authentication enabled"
Display --indent 2 --text "- NIS authentication support" --result "${STATUS_ENABLED}" --color GREEN
else
LogText "Result: NIS authentication not enabled"
Display --indent 2 --text "- NIS authentication support" --result "NOT ENABLED" --color WHITE
fi
fi
else
LogText "Result: /etc/nsswitch.conf not found"
fi
fi
#
#################################################################################
#
# Test : AUTH-9250
# Description : Check for sudoers file
Register --test-no AUTH-9250 --weight L --network NO --category security --description "Checking sudoers file"
if [ ${SKIPTEST} -eq 0 ]; then
FOUND=0
for I in ${SUDOERS_LOCATIONS}; do
LogText "Test: checking presence ${I}"
if [ -f ${I} ]; then
FOUND=1
SUDOERS_FILE="${I}"
LogText "Result: found file (${SUDOERS_FILE})"
else
LogText "Result: file ${I} not found"
fi
done
if [ ${FOUND} -eq 1 ]; then
LogText "Result: sudoers file found (${SUDOERS_FILE})"
Display --indent 2 --text "- sudoers file" --result "${STATUS_FOUND}" --color GREEN
else
LogText "Result: sudoers file NOT found"
Display --indent 2 --text "- sudoers file" --result "${STATUS_NOT_FOUND}" --color YELLOW
fi
fi
#
#################################################################################
#
# Test : AUTH-9252
# Description : Check for sudoers file permissions
if [ ! "${SUDOERS_FILE}" = "" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
Register --test-no AUTH-9252 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check sudoers file"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: checking sudoers file (${SUDOERS_FILE}) permissions"
FIND=$(ls -l ${SUDOERS_FILE} | ${CUTBINARY} -c 2-10)
LogText "Result: Found file permissions: ${FIND}"
if [ "${FIND}" = "rw-------" -o "${FIND}" = "rw-rw----" -o "${FIND}" = "r--r-----" ]; then
LogText "Result: file ${SUDOERS_FILE} has correct permissions"
Display --indent 4 --text "- Check sudoers file permissions" --result "${STATUS_OK}" --color GREEN
else
LogText "Result: file has possibly unsafe file permissions"
Display --indent 4 --text "- Check sudoers file permissions" --result "${STATUS_WARNING}" --color RED
fi
fi
#
#################################################################################
#
# Test : AUTH-9254
# Description : Solaris test to check passwordless accounts
Register --test-no AUTH-9254 --os Solaris --weight L --network NO --root-only YES --category security --description "Solaris passwordless accounts"
if [ ${SKIPTEST} -eq 0 ]; then
FIND=$(logins -p | ${AWKBINARY} '{ print $1 }')
if [ "${FIND}" = "" ]; then
LogText "Result: no passwordless accounts found"
Display --indent 2 --text "- Passwordless accounts on Solaris" --result "${STATUS_OK}" --color GREEN
else
for I in ${FIND}; do
ReportWarning ${TEST_NO} "Found passwordless account (${I})"
done
Display --indent 2 --text "- Passwordless accounts on Solaris" --result "${STATUS_WARNING}" --color RED
fi
fi
#
#################################################################################
#
# Test : AUTH-9262
# Description : Search for PAM password strength testing libraries
Register --test-no AUTH-9262 --weight L --network NO --category security --description "Checking presence password strength testing tools (PAM)"
if [ ${SKIPTEST} -eq 0 ]; then
FOUND=0
FOUND_CRACKLIB=0
FOUND_PASSWDQC=0
FOUND_PWQUALITY=0
# Cracklib
LogText "Searching PAM password testing modules (cracklib, passwdqc, pwquality)"
for I in ${PAM_FILE_LOCATIONS}; do
if [ -f ${I}/pam_cracklib.so ]; then
FOUND_CRACKLIB=1
FOUND=1
LogText "Result: found pam_cracklib.so (crack library PAM) in ${I}"
fi
if [ -f ${I}/pam_passwdqc.so ]; then
FOUND_PASSWDQC=1
FOUND=1
LogText "Result: found pam_passwdqc.so (passwd quality control PAM) in ${I}"
fi
if [ -f ${I}/pam_pwquality.so ]; then
FOUND_PWQUALITY=1
FOUND=1
LogText "Result: found pam_pwquality.so (password quality control PAM) in ${I}"
fi
done
# Cracklib
if [ ${FOUND_CRACKLIB} -eq 1 ]; then
LogText "Result: pam_cracklib.so found"
Report "pam_cracklib=1"
else
LogText "Result: pam_cracklib.so NOT found (crack library PAM)"
fi
# Password quality control
if [ ${FOUND_PASSWDQC} -eq 1 ]; then
LogText "Result: pam_passwdqc.so found"
Report "pam_passwdqc=1"
else
LogText "Result: pam_passwdqc.so NOT found (passwd quality control PAM)"
fi
# pwquality module
if [ ${FOUND_PWQUALITY} -eq 1 ]; then
LogText "Result: pam_pwquality.so found"
Report "pam_pwquality=1"
else
LogText "Result: pam_pwquality.so NOT found (pwquality control PAM)"
fi
if [ ${FOUND} -eq 0 ]; then
Display --indent 2 --text "- PAM password strength tools" --result "${STATUS_SUGGESTION}" --color YELLOW
LogText "Result: no PAM modules for password strength testing found"
ReportSuggestion ${TEST_NO} "Install a PAM module for password strength testing like pam_cracklib or pam_passwdqc"
AddHP 0 3
else
Display --indent 2 --text "- PAM password strength tools" --result "${STATUS_OK}" --color GREEN
LogText "Result: found at least one PAM module for password strength testing"
AddHP 3 3
fi
fi
#
#################################################################################
#
# Test : AUTH-9264
# Description : Scan /etc/pam.conf file
Register --test-no AUTH-9264 --weight L --network NO --category security --description "Checking presence pam.conf"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: Checking file /etc/pam.conf"
if [ -f /etc/pam.conf ]; then
LogText "Result: file /etc/pam.conf exists"
Display --indent 2 --text "- PAM configuration files (pam.conf)" --result "${STATUS_FOUND}" --color GREEN
LogText "Test: searching PAM configuration files"
FIND=$(${EGREPBINARY} -v "^#" /etc/pam.conf | ${EGREPBINARY} -v "^$" | ${SEDBINARY} 's/[[:space:]]/ /g' | ${SEDBINARY} 's/ / /g' | ${SEDBINARY} 's/ /:space:/g')
if [ "${FIND}" = "" ]; then
LogText "Result: File has no configuration options defined (empty, or only filled with comments and empty lines)"
else
LogText "Result: found one or more configuration lines"
for LINE in ${FIND}; do
LINE=$(echo ${LINE} | ${SEDBINARY} 's/:space:/ /g')
LogText "Found line: ${LINE}"
done
fi
else
LogText "Result: file /etc/pam.conf could not be found"
Display --indent 2 --text "- PAM configuration file (pam.conf)" --result "${STATUS_NOT_FOUND}" --color WHITE
fi
fi
#
#################################################################################
#
# Test : AUTH-9266
# Description : Searching available PAM configurations (/etc/pam.d)
Register --test-no AUTH-9266 --weight L --network NO --category security --description "Checking presence pam.d files"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: Checking directory /etc/pam.d"
if [ -d /etc/pam.d ]; then
LogText "Result: directory /etc/pam.d exists"
Display --indent 2 --text "- PAM configuration files (pam.d)" --result "${STATUS_FOUND}" --color GREEN
LogText "Test: searching PAM configuration files"
FIND=$(find /etc/pam.d -type f -print | sort)
for FILE in ${FIND}; do
LogText "Found file: ${FILE}"
done
else
LogText "Result: directory /etc/pam.d could not be found"
Display --indent 2 --text "- PAM configuration files (pam.d)" --result "${STATUS_NOT_FOUND}" --color WHITE
fi
fi
#
#################################################################################
#
# Test : AUTH-9268
# Description : Searching available PAM files
# Notes : PAM is used on AIX, FreeBSD, Linux, HPUX, Solaris
if [ ${OS} = "AIX" -o ${OS} = "Linux" -o ${OS} = "HPUX" -o ${OS} = "Solaris" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
Register --test-no AUTH-9268 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Checking presence pam.d files"
if [ ${SKIPTEST} -eq 0 ]; then
FOUND=0
LogText "Test: Searching pam modules"
for DIR in ${PAM_FILE_LOCATIONS}; do
LogText "Test: Checking ${DIR}"
if [ -d ${DIR} -a ! -L ${DIR} ]; then
LogText "Result: directory ${DIR} exists"
# Search in the specified directory
FIND=$(find ${DIR} -maxdepth 1 -type f -name "pam_*.so" -print | sort)
if [ ! "${FIND}" = "" ]; then FOUND=1; fi
for FILE in ${FIND}; do
LogText "Found file: ${FILE}"
Report "pam_module[]=${FILE}"
done
else
LogText "Result: directory ${DIR} could not be found or is a symlink to another directory"
fi
done
# Check if we found at least one module
if [ ${FOUND} -eq 0 ]; then
Display --indent 2 --text "- PAM modules" --result "${STATUS_NOT_FOUND}" --color WHITE
LogText "Result: no PAM modules found"
else
Display --indent 2 --text "- PAM modules" --result "${STATUS_FOUND}" --color GREEN
fi
unset DIR; unset FILE; unset FIND
fi
#
#################################################################################
#
# Test : AUTH-9278
# Description : Search LDAP support in PAM files
Register --test-no AUTH-9278 --weight L --network NO --category security --description "Checking LDAP pam status"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: checking presence /etc/pam.d/common-auth"
if [ -f /etc/pam.d/common-auth ]; then
LogText "Result: file /etc/pam.d/common-auth exists"
LogText "Test: checking presence LDAP module"
FIND=$(${GREPBINARY} "^auth.*ldap" /etc/pam.d/common-auth)
if [ ! "${FIND}" = "" ]; then
LogText "Result: LDAP module present"
LogText "Output: ${FIND}"
Display --indent 2 --text "- LDAP module in PAM" --result "${STATUS_FOUND}" --color GREEN
LDAP_AUTH_ENABLED=1
LDAP_PAM_ENABLED=1
else
LogText "Result: LDAP module not found"
Display --indent 2 --text "- LDAP module in PAM" --result "${STATUS_NOT_FOUND}" --color WHITE
fi
else
LogText "Result: file /etc/pam.d/common-auth not found, skipping test"
fi
fi
#
#################################################################################
#
# Test : AUTH-9282 and AUTH-9283
# Note : Every Linux based operating system seem to have different passwd
# options, so we have to check the version first.
if [ "${OS}" = "Linux" ]; then
if [ ${OS_REDHAT_OR_CLONE} -eq 0 ]; then
case ${LINUX_VERSION} in
"SuSE")
PREQS_MET="YES"
FIND=$(passwd -a -S 2> /dev/null | ${AWKBINARY} '{ if ($2=="P" && $5=="99999") print $1 }')
FIND2=$(passwd -a -S 2> /dev/null | ${AWKBINARY} '{ if ($2=="NP") print $1 }')
;;
*)
PREQS_MET="YES"
FIND=$(passwd --all --status 2> /dev/null | ${AWKBINARY} '{ if ($2=="P" && $5=="99999") print $1 }')
FIND2=$(passwd --all --status 2> /dev/null | ${AWKBINARY} '{ if ($2=="NP") print $1 }')
;;
esac
else
LogText "Result: skipping test for this Linux version"
ReportManual "AUTH-9282:01"
PREQS_MET="NO"
FIND=""
FIND2=""
fi
else
PREQS_MET="NO"
fi
# Test : AUTH-9282
# Description : Search password protected accounts without expire (Linux)
Register --test-no AUTH-9282 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Checking password protected account without expire date"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: Checking Linux version and password expire date status"
if [ "${FIND}" = "" ]; then
LogText "Result: all accounts seem to have an expire date"
Display --indent 2 --text "- Accounts without expire date" --result "${STATUS_OK}" --color GREEN
else
LogText "Result: found one or more accounts with expire date set"
for I in ${FIND}; do
LogText "Account without expire date: ${I}"
done
Display --indent 2 --text "- Accounts without expire date" --result "${STATUS_SUGGESTION}" --color YELLOW
ReportSuggestion ${TEST_NO} "When possible set expire dates for all password protected accounts"
fi
fi
# Test : AUTH-9283
# Description : Search passwordless accounts
Register --test-no AUTH-9283 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Checking accounts without password"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: Checking passwordless accounts"
if [ "${FIND2}" = "" ]; then
LogText "Result: all accounts seem to have a password"
Display --indent 2 --text "- Accounts without password" --result "${STATUS_OK}" --color GREEN
else
LogText "Result: found one or more accounts without password"
for I in ${FIND2}; do
LogText "Account without password: ${I}"
Report "account_without_password=${I}"
done
Display --indent 2 --text "- Accounts without password" --result "${STATUS_WARNING}" --color RED
ReportWarning ${TEST_NO} "Found accounts without password"
fi
fi
#
#################################################################################
#
# Test : AUTH-9286
# Description : Check user password aging
# Notes : MIN = minimum age, avoid rotation of passwords too quickly
# : MAX = maximum age, ensure regular change of passwords
if [ -f /etc/login.defs ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
Register --test-no AUTH-9286 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Checking user password aging"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: Checking PASS_MIN_DAYS option in /etc/login.defs "
FIND=$(${GREPBINARY} "^PASS_MIN_DAYS" /etc/login.defs | ${AWKBINARY} '{ if ($1=="PASS_MIN_DAYS") { print $2 } }')
if [ "${FIND}" = "" -o "${FIND}" = "0" ]; then
LogText "Result: password minimum age is not configured"
Display --indent 2 --text "- Checking user password aging (minimum)" --result "${STATUS_DISABLED}" --color YELLOW
ReportSuggestion ${TEST_NO} "Configure minimum password age in /etc/login.defs"
AddHP 0 1
else
LogText "Result: password needs to be at least ${FIND} days old"
PASSWORD_MINIMUM_DAYS=${FIND}
Display --indent 2 --text "- User password aging (minimum)" --result CONFIGURED --color GREEN
AddHP 3 3
fi
LogText "Test: Checking PASS_MAX_DAYS option in /etc/login.defs "
FIND=$(${GREPBINARY} "^PASS_MAX_DAYS" /etc/login.defs | ${AWKBINARY} '{ if ($1=="PASS_MAX_DAYS") { print $2 } }')
if [ "${FIND}" = "" -o "${FIND}" = "99999" ]; then
LogText "Result: password aging limits are not configured"
Display --indent 2 --text "- User password aging (maximum)" --result "${STATUS_DISABLED}" --color YELLOW
ReportSuggestion ${TEST_NO} "Configure maximum password age in /etc/login.defs"
AddHP 0 1
else
LogText "Result: max password age is ${FIND} days"
PASSWORD_MAXIMUM_DAYS=${FIND}
Display --indent 2 --text "- User password aging (maximum)" --result CONFIGURED --color GREEN
AddHP 3 3
fi
fi
#
#################################################################################
#
# Test : AUTH-9288
# Description : Determine which accounts have an expired password
# Notes : This test might not work (yet) on all platforms
if [ -f /etc/shadow ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
Register --test-no AUTH-9288 --preqs-met ${PREQS_MET} --weight L --network NO --root-only YES --category security --description "Checking for expired passwords"
if [ ${SKIPTEST} -eq 0 ]; then
if FileIsReadable /etc/shadow; then
DAYS_SINCE_EPOCH=$(($(date --utc +%s)/86400))
LogText "Data: Days since epoch is ${DAYS_SINCE_EPOCH}"
LogText "Test: collecting accounts which have an expired password (last day changed + maximum change time)"
# Skip fields with a !, *, or x, or !* (field $3 is last changed, $5 is maximum changed)
FIND=$(${EGREPBINARY} -v ":[\!\*x](\*)?:" /etc/shadow | ${AWKBINARY} -v today=${DAYS_SINCE_EPOCH} -F: '{ if (($5!="") && (today>$3+$5)) { print $1 }}')
if [ ! "${FIND}" = "" ]; then
for ACCOUNT in ${FIND}; do
LogText "Result: password of user ${ACCOUNT} has been expired"
Report "account_password_expired[]=${ACCOUNT}"
done
AddHP 0 10
Display --indent 2 --text "- Checking expired passwords" --result "${STATUS_FOUND}" --color RED
ReportSuggestion "${TEST_NO}" "Delete accounts which are no longer used"
else
LogText "Result: good, no passwords have been expired"
Display --indent 2 --text "- Checking expired passwords" --result "${STATUS_OK}" --color GREEN
AddHP 10 10
fi
else
Display --indent 2 --text "- Checking expired passwords" --result "${STATUS_SKIPPED}" --color YELLOW
fi
fi
#
#################################################################################
#
# Test : AUTH-9304
# Description : Check if single user mode login is properly configured in Solaris
# Notes : sulogin should be called from svm script (Solaris <10) in /etc/rcS.d
Register --test-no AUTH-9304 --os Solaris --weight L --network NO --category security --description "Check single user login configuration"
if [ ${SKIPTEST} -eq 0 ]; then
# Check if file exists (Solaris 10 does not have this file by default)
if [ -f /etc/default/sulogin ]; then
LogText "Result: file /etc/default/sulogin exists"
LogText "Test: checking presence PASSREQ=NO"
FIND=$(${GREPBINARY} "^PASSREQ=NO" /etc/default/sulogin)
if [ "${FIND}" = "" ]; then
LogText "Result: option not present or configured to request a password at single user mode login"
Display --indent 2 --text "- Checking Solaris /etc/default/sulogin file" --result "${STATUS_OK}" --color GREEN
AddHP 1 1
else
LogText "Result: option present, no password needed at single user mode login"
Display --indent 2 --text "- Checking Solaris /etc/default/sulogin file" --result "${STATUS_WARNING}" --color RED
ReportWarning ${TEST_NO} "No password needed for single user mode login"
AddHP 0 1
fi
else
LogText "Result: file /etc/default/sulogin does not exist"
fi
fi
#
#################################################################################
#
# Test : AUTH-9306
# Description : Check if authentication is needed to boot the system
# Notes : :d_boot_authenticate: is a good option for production machines to
# avoid unauthorized booting of systems. Option :d_boot_autentication@:
# disabled a required login.
Register --test-no AUTH-9306 --os HP-UX --weight L --network NO --category security --description "Check single boot authentication"
if [ ${SKIPTEST} -eq 0 ]; then
# Check if file exists
LogText "Test: Searching /tcb/files/auth/system/default"
if [ -f /tcb/files/auth/system/default ]; then
LogText "Result: file /tcb/files/auth/system/default exists"
LogText "Test: checking presence :d_boot_authenticate@:"
FIND=$(${GREPBINARY} "^:d_boot_authenticate@" /tcb/files/auth/system/default)
if [ -z "${FIND}" ]; then
LogText "Result: option not set, password is needed at boot"
Display --indent 2 --text "- Checking HP-UX boot authentication" --result "${STATUS_OK}" --color GREEN
AddHP 1 1
else
LogText "Result: option present, no password needed at single user mode login"
Display --indent 2 --text "- Checking HP-UX boot authentication" --result "${STATUS_SUGGESTION}" --color YELLOW
ReportSuggestion ${TEST_NO} "Set password for system boot"
AddHP 0 1
fi
else
LogText "Result: file /tcb/files/auth/system/default does not exist"
fi
fi
#
#################################################################################
#
# Test : AUTH-9308
# Description : Check single user mode login for Linux
Register --test-no AUTH-9308 --os Linux --weight L --network NO --category security --description "Check single user login configuration"
if [ ${SKIPTEST} -eq 0 ]; then
FOUND=0
TEST_PERFORMED=0
if [ ${HAS_SYSTEMD} -eq 0 ]; then
# Check inittab
LogText "Test: Searching /etc/inittab"
if [ -f /etc/inittab ]; then
TEST_PERFORMED=1
LogText "Result: file /etc/inittab exists"
LogText "Test: checking presence sulogin for single user mode"
FIND=$(${EGREPBINARY} "^[a-zA-Z0-9~]+:S:(respawn|wait):/sbin/sulogin" /etc/inittab)
FIND2=$(${EGREPBINARY} "^su:S:(respawn|wait):/sbin/sulogin" /etc/inittab)
if [ ! -z "${FIND}" -o ! -z "${FIND2}" ]; then
FOUND=1
LogText "Result: found sulogin, so single user is protected"
fi
else
LogText "Result: file /etc/inittab does not exist"
fi
# Check init
LogText "Test: Searching /etc/sysconfig/init"
if [ -f /etc/sysconfig/init ]; then
TEST_PERFORMED=1
LogText "Result: file /etc/sysconfig/init exists"
LogText "Test: checking presence sulogin for single user mode"
FIND=$(${GREPBINARY} "^SINGLE=/sbin/sulogin" /etc/sysconfig/init)
if [ ! "${FIND}" = "" ]; then
FOUND=1
LogText "Result: found sulogin, so single user is protected"
fi
else
LogText "Result: file /etc/sysconfig/init does not exist"
fi
fi
# Systemd support
SYSTEMD_DIRECTORY="/lib/systemd/system"
if [ -d ${SYSTEMD_DIRECTORY} ]; then
FILES="console-shell.service emergency.service rescue.service"
LogText "Test: going to check several systemd targets now"
for I in ${FILES}; do
FILE="${SYSTEMD_DIRECTORY}/${I}"
LogText "Test: checking if target ${I} is available (${FILE})"
if [ -f ${FILE} ]; then
# Mark test as performed only when at least 1 target exists (e.g. Ubuntu 14.04 has limited systemd support)
TEST_PERFORMED=1
LogText "Result: found target ${I}"
FIND=$(${EGREPBINARY} "^ExecStart=" ${FILE} | ${GREPBINARY} "/sulogin")
if [ "${FIND}" = "" ]; then
LogText "Result: did not find sulogin specified, possible risk of getting into single user mode without authentication"
else
LogText "Result: sulogin was found, which is a good measure to protect single user mode"
FOUND=1
fi
else
LogText "Result: target ${I} not found"
fi
done
fi
if [ ${TEST_PERFORMED} -eq 1 ]; then
if [ ${FOUND} -eq 0 ]; then
LogText "Result: option not set, no password needed at single user mode boot"
Display --indent 2 --text "- Checking Linux single user mode authentication" --result "${STATUS_WARNING}" --color RED
ReportWarning ${TEST_NO} "No password set for single mode"
ReportSuggestion ${TEST_NO} "Set password for single user mode to minimize physical access attack surface"
AddHP 0 2
else
LogText "Result: option set, password is needed at single user mode boot"
Display --indent 2 --text "- Checking Linux single user mode authentication" --result "${STATUS_OK}" --color GREEN
AddHP 2 2
fi
else
LogText "Result: no tests performed"
fi
fi
#
#################################################################################
#
# Test : AUTH-9328
# Description : Check default umask in common files
# Notes: This test should be moved later to shells section
# /etc/login.defs
# pam_umask
Register --test-no AUTH-9328 --weight L --network NO --category security --description "Default umask values"
if [ ${SKIPTEST} -eq 0 ]; then
Display --indent 2 --text "- Determining default umask"
GOOD_UMASK=0
WEAK_UMASK=0
# /etc/profile.d
LogText "Test: Checking /etc/profile.d directory"
if [ -d /etc/profile.d ]; then
FOUND=0
FIND=$(ls /etc/profile.d/* 2> /dev/null)
if [ ! -z "${FIND}" ]; then
LogText "Result: found /etc/profile.d, with one or more files in it"
for FILE in ${FIND}; do
HAS_MASK=$(${GREPBINARY} umask ${FILE} | ${SEDBINARY} 's/^[ \t]*//' | ${GREPBINARY} -v "^#" | ${AWKBINARY} '{ print $2 }')
for MASK in ${HAS_MASK}; do
if [ "${MASK}" = "077" -o "${MASK}" = "027" ]; then
LogText "Result: found a strong umask '${MASK}' set in ${FILE}"
GOOD_UMASK=1
else
LogText "Result: found a weak umask '${MASK}' set in ${FILE}"
WEAK_UMASK=1
fi
done
done
else
LogText "Result: found /etc/profile.d, but it does not contain any files"
fi
else
LogText "Result: /etc/profile.d not found"
fi
# Test /etc/profile (only if we didn't find a good umask in profile.d)
LogText "Test: Checking /etc/profile"
if [ -f /etc/profile -a ${GOOD_UMASK} -eq 0 ]; then
LogText "Result: file /etc/profile exists"
LogText "Test: Checking umask value in /etc/profile"
FIND=$(${GREPBINARY} "umask" /etc/profile | ${SEDBINARY} 's/^[ \t]*//' | ${GREPBINARY} -v "^#" | ${AWKBINARY} '{ print $2 }')
FIND2=$(${GREPBINARY} "umask" /etc/profile | ${SEDBINARY} 's/^[ \t]*//' | ${GREPBINARY} -v "^#" | ${AWKBINARY} '{ print $2 }' | wc -l)
FOUND_UMASK=0
if [ "${FIND2}" = "0" ]; then
LogText "Result: did not find umask in /etc/profile"
elif [ "${FIND2}" = "1" ]; then
LogText "Result: found umask (prefixed with spaces)"
FOUND_UMASK=1
if [ ! "${FIND}" = "077" -a ! "${FIND}" = "027" ]; then
LogText "Result: found umask ${FIND}, which could be more strict"
WEAK_UMASK=1
else
LogText "Result: found umask ${FIND}, which is fine"
GOOD_UMASK=1
fi
# Found more than 1 umask value in profile
else
LogText "Result: found multiple umask values configured in /etc/profile"
FOUND_UMASK=1
for I in ${FIND}; do
if [ ! "${I}" = "077" -a ! "${I}" = "027" ]; then
LogText "Result: umask ${I} could be more strict"
WEAK_UMASK=1
AddHP 1 2
else
LogText "Result: Found umask ${I}, which is fine"
AddHP 2 2
fi
done
fi
if [ ${FOUND_UMASK} -eq 1 ]; then
if [ ${WEAK_UMASK} -eq 0 ]; then
Display --indent 4 --text "- umask (/etc/profile and /etc/profile.d)" --result "${STATUS_OK}" --color GREEN
AddHP 2 2
elif [ ${GOOD_UMASK} -eq 1 -a ${WEAK_UMASK} -eq 1 ]; then
Display --indent 4 --text "- umask (/etc/profile and /etc/profile.d)" --result "${STATUS_SUGGESTION}" --color YELLOW
ReportSuggestion ${TEST_NO} "Some umasks found could be more strict (e.g. 027)"
AddHP 1 2
else
Display --indent 4 --text "- umask (/etc/profile and /etc/profile.d)" --result "${STATUS_SUGGESTION}" --color YELLOW
ReportSuggestion ${TEST_NO} "Default umask in /etc/profile or /etc/profile.d/custom.sh could be more strict (e.g. 027)"
AddHP 0 2
fi
else
# Some operating systems don't have a default umask defined in /etc/profile (Debian)
LogText "Result: found no umask. Please check if this is correct"
Display --indent 4 --text "- umask (/etc/profile)" --result "${STATUS_NOT_FOUND}" --color YELLOW
fi
else
LogText "Result: file /etc/profile does not exist"
fi
# /etc/passwd
LogText "Test: Checking umask entries in /etc/passwd (pam_umask)"
if [ -f /etc/passwd ]; then
LogText "Result: file /etc/passwd exists"
LogText "Test: Checking umask value in /etc/passwd"
FIND=$(${GREPBINARY} "umask=" /etc/passwd)
if [ "${FIND}" = "" ]; then
ReportManual "AUTH-9328:03"
fi
else
LogText "Result: file /etc/passwd does not exist"
fi
# /etc/login.defs
LogText "Test: Checking /etc/login.defs"
if [ -f /etc/login.defs ]; then
LogText "Result: file /etc/login.defs exists"
LogText "Test: Checking umask value in /etc/login.defs"
FIND=$(${GREPBINARY} "^UMASK" /etc/login.defs | ${AWKBINARY} '{ print $2 }')
if [ "${FIND}" = "" ]; then
LogText "Result: umask value is not configured (most likely it will have the default 022 value)"
Display --indent 4 --text "- umask (/etc/login.defs)" --result "${STATUS_SUGGESTION}" --color YELLOW
ReportSuggestion ${TEST_NO} "Default umask in /etc/login.defs could not be found and defaults usually to 022, which could be more strict like 027"
AddHP 1 2
elif [ "${FIND}" = "077" -o "${FIND}" = "027" ]; then
LogText "Result: umask is ${FIND}, which is fine"
Display --indent 4 --text "- umask (/etc/login.defs)" --result "${STATUS_OK}" --color GREEN
AddHP 2 2
else
LogText "Result: found umask ${FIND}, which could be improved"
Display --indent 4 --text "- umask (/etc/login.defs)" --result "${STATUS_SUGGESTION}" --color YELLOW
ReportSuggestion ${TEST_NO} "Default umask in /etc/login.defs could be more strict like 027"
AddHP 0 2
fi
else
LogText "Result: file /etc/login.defs does not exist"
fi
# Red Hat /etc/init.d/functions
LogText "Test: Checking /etc/init.d/functions"
if [ -f /etc/init.d/functions ]; then
LogText "Result: file /etc/init.d/functions exists"
LogText "Test: Checking umask value in /etc/init.d/functions"
FIND=$(${GREPBINARY} "^umask" /etc/init.d/functions | ${AWKBINARY} '{ print $2 }')
if [ "${FIND}" = "" ]; then
LogText "Result: umask is not configured"
Display --indent 4 --text "- umask (/etc/init.d/functions)" --result "${STATUS_NONE}" --color WHITE
elif [ "${FIND}" = "077" -o "${FIND}" = "027" ]; then
LogText "Result: umask is ${FIND}, which is fine"
Display --indent 4 --text "- umask (/etc/init.d/functions)" --result "${STATUS_OK}" --color GREEN
AddHP 2 2
else
LogText "Result: found umask ${FIND}, which could be improved"
Display --indent 4 --text "- umask (/etc/init.d/functions)" --result "${STATUS_SUGGESTION}" --color YELLOW
AddHP 0 2
fi
else
LogText "Result: file /etc/init.d/functions does not exist"
fi
# /etc/init.d/rc
LogText "Test: Checking /etc/init.d/rc"
if [ -f /etc/init.d/rc ]; then
LogText "Result: file /etc/init.d/rc exists"
LogText "Test: Checking UMASK value in /etc/init.d/rc"
FIND=$(${GREPBINARY} -i "^UMASK" /etc/init.d/rc | ${AWKBINARY} '{ print $2 }')
if [ "${FIND}" = "" ]; then
LogText "Result: UMASK value is not configured (most likely it will have the default 022 value)"
Display --indent 4 --text "- Checking umask (/etc/init.d/rc)" --result "${STATUS_SUGGESTION}" --color YELLOW
ReportSuggestion ${TEST_NO} "Default umask in /etc/init.d/rc could not be found and defaults usually to 022, which could be more strict like 027"
AddHP 1 2
elif [ "${FIND}" = "077" -o "${FIND}" = "027" ]; then
LogText "Result: umask is ${FIND}, which is fine"
Display --indent 4 --text "- umask (/etc/init.d/rc)" --result "${STATUS_OK}" --color GREEN
AddHP 2 2
else
LogText "Result: found umask ${FIND}, which could be improved"
Display --indent 4 --text "- umask (/etc/init.d/rc)" --result "${STATUS_SUGGESTION}" --color YELLOW
ReportSuggestion ${TEST_NO} "Default umask in /etc/init.d/rc could be more strict like 027"
AddHP 0 2
fi
else
LogText "Result: file /etc/init.d/rc does not exist"
fi
# FreeBSD
if [ -f /etc/login.conf ]; then
FOUND=0
WEAK_UMASK=0
LogText "Result: file /etc/login.conf exists"
FIND=$(${GREPBINARY} "umask" /etc/login.conf | ${SEDBINARY} 's/#.*//' | ${SEDBINARY} -E 's/^[[:cntrl:]]//' | ${GREPBINARY} -v '^$' | ${AWKBINARY} -F: '{ print $2}' | ${AWKBINARY} -F= '{ if ($1=="umask") { print $2 }}')
if [ ! "${FIND}" = "" ]; then
for UMASK_VALUE in ${FIND}; do
case ${UMASK_VALUE} in
027|0027|077|0077)
LogText "Result: found umask value ${UMASK_VALUE}, which is fine"
AddHP 2 2
FOUND=1
;;
*)
AddHP 0 2
FOUND=1
WEAK_UMASK=1
LogText "Result: found umask value ${UMASK_VALUE}, which can be more strict"
;;
esac
done
fi
if [ ${FOUND} -eq 1 ]; then
if [ ${WEAK_UMASK} -eq 0 ]; then
Display --indent 4 --text "- umask (/etc/login.conf)" --result "${STATUS_OK}" --color GREEN
else
Display --indent 4 --text "- umask (/etc/login.conf)" --result WEAK --color YELLOW
ReportSuggestion ${TEST_NO} "Umask in /etc/login.conf could be more strict like 027"
fi
else
LogText "Result: no umask setting found in /etc/login.conf, which is unexpected"
Display --indent 4 --text "- umask (/etc/login.conf)" --result "${STATUS_NONE}" --color YELLOW
fi
fi
# /etc/init.d/rcS
LogText "Test: Checking /etc/init.d/rcS"
if [ -f /etc/init.d/rcS ]; then
LogText "Result: file /etc/init.d/rcS exists"
LogText "Test: Checking if script runs another script."
FIND=$(${GREPBINARY} -i "^exec " /etc/init.d/rcS | ${AWKBINARY} '{ print $2 }')
if [ "${FIND}" = "" ]; then
FIND2=$(${GREPBINARY} -i "^UMASK" /etc/init.d/rcS | ${AWKBINARY} '{ print $2 }')
if [ "${FIND2}" = "" ]; then
LogText "Result: UMASK value is not configured (most likely it will have the default 022 value)"
Display --indent 4 --text "- Checking umask (/etc/init.d/rcS)" --result "${STATUS_SUGGESTION}" --color YELLOW
ReportSuggestion ${TEST_NO} "Default umask in /etc/init.d/rcS could not be found and defaults usually to 022, which could be more strict like 027"
AddHP 1 2
elif [ "${FIND2}" = "077" -o "${FIND2}" = "027" ]; then
LogText "Result: umask is ${FIND2}, which is fine"
Display --indent 4 --text "- umask (/etc/init.d/rcS)" --result "${STATUS_OK}" --color GREEN
AddHP 2 2
else
LogText "Result: found umask ${FIND2}, which could be improved"
Display --indent 4 --text "- umask (/etc/init.d/rcS)" --result "${STATUS_SUGGESTION}" --color YELLOW
ReportSuggestion ${TEST_NO} "Default umask in /etc/init.d/rcS could be more strict like 027"
AddHP 0 2
fi
else
# Improve check
LogText "Result: exec line present in file, setting of umask not needed in this script"
LogText "Output: ${FIND}"
fi
else
LogText "Result: file /etc/init.d/rcS does not exist"
fi
fi
#
#################################################################################
#
# Test : AUTH-9340
# Description : Solaris account locking
Register --test-no AUTH-9340 --os Solaris --weight L --network NO --category security --description "Solaris account locking"
if [ ${SKIPTEST} -eq 0 ]; then
FOUND=0
if [ -f /etc/security/policy.conf ]; then
LogText "Result: found /etc/security/policy.conf"
FIND=$(${GREPBINARY} "^LOCK_AFTER_RETRIES" /etc/security/policy.conf)
if [ ! "${FIND}" = "" ]; then
FOUND=1
LogText "Result: account locking option set"
LogText "Output: ${FIND}"
AddHP 2 2
else
LogText "Result: option LOCK_AFTER_RETRIES not set"
AddHP 1 2
fi
else
LogText "Result: /etc/security/policy.conf does not exist"
fi
# If policy.conf does not exist, we most likely deal with a Solaris version below 10
# and we proceed with checking the softer option RETRIES in /etc/default/login
# which does not lock account, but discourages brute force password attacks.
if [ ${FOUND} -eq 0 ]; then
LogText "Test: checking /etc/default/login"
if [ -f /etc/default/login ]; then
LogText "Result: file /etc/default/login exists"
FIND=$(${GREPBINARY} "^RETRIES" /etc/default/login)
if [ ! "${FIND}" = "" ]; then
FOUND=1
LogText "Result: retries option configured"
LogText "Output: ${FIND}"
AddHP 2 2
else
LogText "Result: retries option not configured"
AddHP 1 2
fi
else
LogText "Result: file /etc/default/login does not exist"
fi
fi
if [ ${FOUND} -eq 1 ]; then
Display --indent 2 --text "- Checking account locking" --result "${STATUS_ENABLED}" --color GREEN
else
Display --indent 2 --text "- Checking account locking" --result "NOT ENABLED" --color YELLOW
fi
fi
#
#################################################################################
#
# Test : AUTH-9402
# Description : Query LDAP authentication support
Register --test-no AUTH-9402 --weight L --network NO --category security --description "Query LDAP authentication support"
if [ ${SKIPTEST} -eq 0 ]; then
if [ -f /etc/nsswitch.conf ]; then
FIND=$(${EGREPBINARY} "^passwd" /etc/nsswitch.conf | ${GREPBINARY} "ldap")
if [ "${FIND}" = "" ]; then
LogText "Result: LDAP authentication not enabled"
Display --indent 2 --text "- LDAP authentication support" --result "NOT ENABLED" --color WHITE
else
LogText "Result: LDAP authentication enabled"
Display --indent 2 --text "- LDAP authentication support" --result "${STATUS_ENABLED}" --color GREEN
LDAP_AUTH_ENABLED=1
fi
else
LogText "Result: /etc/nsswitch.conf not found"
fi
fi
#
#################################################################################
#
# Test : AUTH-9406
# Description : Check LDAP servers in client configuration
if [ ${LDAP_AUTH_ENABLED} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
Register --test-no AUTH-9406 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Query LDAP servers in client configuration"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: checking ldap.conf options"
for FILE in ${LDAP_CONF_LOCATIONS}; do
LogText "Test: checking ${FILE}"
if [ -f ${FILE} ]; then
LogText "Result: file ${FILE} exists, LDAP being used"
LDAP_CLIENT_CONFIG_FILE="${FILE}"
LogText "Test: checking LDAP servers in file ${FILE}"
FIND=$(${EGREPBINARY} "^host " ${FILE} | ${AWKBINARY} '{ print $2 }')
for SERVER in ${FIND}; do
Display --indent 6 --text "LDAP server: ${SERVER}"
LogText "Result: found LDAP server ${SERVER}"
Report "ldap_server[]=${SERVER}"
done
else
LogText "Result: ${FILE} does NOT exist"
fi
done
unset FILE FIND SERVER
fi
#
#################################################################################
#
# Test : AUTH-9408
# Description : Logging of failed login attempts
if [ -f /etc/login.defs ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
Register --test-no AUTH-9408 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Logging of failed login attempts via /etc/login.defs"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: Checking FAILLOG_ENAB option in /etc/login.defs "
FIND=$(${GREPBINARY} "^FAILLOG_ENAB" /etc/login.defs | ${AWKBINARY} '{ if ($1=="FAILLOG_ENAB") { print $2 } }')
# Search for enabled status (yes), otherwise consider it to be disabled (e.g. empty, or other value)
if [ "${FIND}" = "yes" ]; then
AUTH_FAILED_LOGINS_LOGGED=1
LogText "Result: failed login attempts are logged in /var/log/faillog"
Display --indent 2 --text "- Logging failed login attempts" --result "${STATUS_ENABLED}" --color GREEN
AddHP 3 3
else
LogText "Result: failed login attempts are not logged"
Display --indent 2 --text "- Logging failed login attempts" --result "${STATUS_DISABLED}" --color YELLOW
#ReportSuggestion ${TEST_NO} "Configure failed login attempts to be logged in /var/log/faillog"
AddHP 0 1
fi
fi
#
#################################################################################
#
Report "auth_failed_logins_logged=${AUTH_FAILED_LOGINS_LOGGED}"
Report "ldap_auth_enabled=${LDAP_AUTH_ENABLED}"
Report "ldap_pam_enabled=${LDAP_PAM_ENABLED}"
if [ ! "${LDAP_CLIENT_CONFIG_FILE}" = "" ]; then
Report "ldap_config_file=${LDAP_CLIENT_CONFIG_FILE}"
fi
Report "password_min_days=${PASSWORD_MINIMUM_DAYS}"
Report "password_max_days=${PASSWORD_MAXIMUM_DAYS}"
WaitForKeyPress
#
#================================================================================
# Lynis - Security Auditing and System Hardening for Linux and UNIX - https://cisofy.com
Reference in a new issue View git blame Copy permalink