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nixauditor (lite) - in progress
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#!/bin/bash
#help function
usage ()
{
echo -e "\n\e[00;31m%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\e[00m"
echo -e "\e[00;31m#\e[00m" "\e[00;33m Unofficial CIS Audit Script ^Tested on RHEL 6,7... CentOS 6,7 ^\e[00m" "\e[00;31m#\e[00m"
echo -e "\e[00;31m%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\e[00m"
echo -e "\e[00;33m# For best results, run as ROOT. Always be ROOT. *Evil grin*"
echo -e "\e[00;33m# https://github.com/XalfiE/CIS-Audit"
echo -e "\e[00;31m#########################################################\e[00m"
}
while getopts "h:k:r:e:t" option; do
case "${option}" in
k) keyword=${OPTARG};;
r) report=${OPTARG}"-"`date +"%d-%m-%y"`;;
e) export=${OPTARG};;
t) thorough=1;;
h) usage; exit;;
*) usage; exit;;
esac
done
echo -e "\n\e[00;31m%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\e[00m" |tee -a $report 2>/dev/null
echo -e "\e[00;31m#\e[00m" "\e[00;33m Unofficial CIS Audit Script ^Tested on RHEL 6,7... CentOS 6,7 ^\e[00m" "\e[00;31m#\e[00m" |tee -a $report 2>/dev/null
echo -e "\e[00;31m%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\e[00m" |tee -a $report 2>/dev/null
echo -e "\e[00;33m# For best results, run as ROOT. Always be ROOT. *Evil grin*"
echo -e "\e[00;33m# https://github.com/XalfiE/CIS-Audit"
echo -e "\e[00;31m#########################################################\e[00m"
if [ "$keyword" ]; then
echo "keyword = $keyword" |tee -a $report 2>/dev/null
else
:
fi
if [ "$report" ]; then
echo "report name = $report" |tee -a $report 2>/dev/null
else
:
fi
if [ "$export" ]; then
echo "export location = $export" |tee -a $report 2>/dev/null
else
:
fi
sleep 2
if [ "$export" ]; then
mkdir $export 2>/dev/null
format=$export/`date +"%d-%m-%y_%H:%M"`
mkdir $format 2>/dev/null
else
:
fi
who=`whoami` |tee -a $report 2>/dev/null
echo -e "\n" |tee -a $report 2>/dev/null
echo -e "\e[00;31mScan started at:"; date |tee -a $report 2>/dev/null
echo -e "\e[00;33m\n" |tee -a $report 2>/dev/null
echo -e "\e[00;31m%%%%% Sysinfo %%%%\e[00m" |tee -a $report 2>/dev/null
#basic kernel info
unameinfo=`uname -a 2>/dev/null`
if [ "$unameinfo" ]; then
echo -e "\e[00;33mKernel info:\e[00m\n$unameinfo" |tee -a $report 2>/dev/null
echo -e "\n" |tee -a $report 2>/dev/null
else
:
fi
procver=`cat /proc/version 2>/dev/null`
if [ "$procver" ]; then
echo -e "\e[00;33mKernel versions:\e[00m\n$procver" |tee -a $report 2>/dev/null
echo -e "\n" |tee -a $report 2>/dev/null
else
:
fi
#search all *-release files for version info
release=`cat /etc/*-release 2>/dev/null`
if [ "$release" ]; then
echo -e "\e[00;33mSpecific release information:\e[00m\n$release" |tee -a $report 2>/dev/null
echo -e "\n" |tee -a $report 2>/dev/null
else
:
fi
#target hostname info
hostnamed=`hostname 2>/dev/null`
if [ "$hostnamed" ]; then
echo -e "\e[00;33mHostname:\e[00m\n$hostnamed" |tee -a $report 2>/dev/null
echo -e "\n" |tee -a $report 2>/dev/null
else
:
fi
echo -e "\e[00;31m%%% USER/GROUP %%%\e[00m" |tee -a $report 2>/dev/null
#current user details
currusr=`id 2>/dev/null`
if [ "$currusr" ]; then
echo -e "\e[00;33mCurrent user/group info:\e[00m\n$currusr" |tee -a $report 2>/dev/null
echo -e "\n" |tee -a $report 2>/dev/null
else
:
fi
#last logged on user information
lastlogedonusrs=`lastlog |grep -v "Never" 2>/dev/null`
if [ "$lastlogedonusrs" ]; then
echo -e "\e[00;31mUsers that have previously logged onto the system:\e[00m\n$lastlogedonusrs" |tee -a $report 2>/dev/null
echo -e "\n" |tee -a $report 2>/dev/null
else
:
fi
#strips out username uid and gid values from /etc/passwd
usrsinfo=`cat /etc/passwd | cut -d ":" -f 1,2,3,4 2>/dev/null`
if [ "$usrsinfo" ]; then
echo -e "\e[00;31mAll users and uid/gid info:\e[00m\n$usrsinfo" |tee -a $report 2>/dev/null
echo -e "\n" |tee -a $report 2>/dev/null
else
:
fi
#lists all id's and respective group(s)
grpinfo=`for i in $(cat /etc/passwd 2>/dev/null| cut -d":" -f1 2>/dev/null);do id $i;done 2>/dev/null`
if [ "$grpinfo" ]; then
echo -e "\e[00;31mGroup memberships:\e[00m\n$grpinfo" |tee -a $report 2>/dev/null
echo -e "\n" |tee -a $report 2>/dev/null
else
:
fi
#checks to see if any hashes are stored in /etc/passwd
hashesinpasswd=`grep -v '^[^:]*:[x]' /etc/passwd 2>/dev/null`
if [ "$hashesinpasswd" ]; then
echo -e "\e[00;33mPassword hashes in /etc/passwd!\e[00m\n$hashesinpasswd" |tee -a $report 2>/dev/null
echo -e "\n" |tee -a $report 2>/dev/null
else
:
fi
echo -e "\e[00;31mGeneral CIS Checks start here:\e[00m\n"
#This script will run through several checks and for each check output to the terminal 'Passed' or 'Failed'
#The checks are designed to test whether or not the host conforms to the benchmarks in the following documents:
#>https://benchmarks.cisecurity.org/tools2/linux/CIS_CentOS_Linux_7_Benchmark_v1.1.0.pdf
#>https://benchmarks.cisecurity.org/tools2/linux/CIS_Red_Hat_Enterprise_Linux_7_Benchmark_v1.0.0.pdf
#All credits to https://benchmarks.cisecurity.org. <<< Thanks Good People!!!
echo For best results use root.** Always be root** *Evil grin* Credits, bugs, comments >>[email protected]
#The script doesn't change any config to your system, only many greps :-)
# ***yum-update manenos*
FSTAB='/etc/fstab'
YUM_CONF='/etc/yum.conf'
GRUB_CFG='/boot/grub2/grub.cfg'
GRUB_DIR='/etc/grub.d'
SELINUX_CFG='/etc/selinux/config'
NTP_CONF='/etc/ntp.conf'
SYSCON_NTPD='/etc/sysconfig/ntpd'
LIMITS_CNF='/etc/security/limits.conf'
SYSCTL_CNF='/etc/sysctl.conf'
CENTOS_REL='/etc/centos-release'
LATEST_REL_STR='CentOS Linux release 7.1.1503 (Core)'
HOSTS_ALLOW='/etc/hosts.allow'
HOSTS_DENY='/etc/hosts.deny'
CIS_CNF='/etc/modprobe.d/CIS.conf'
RSYSLOG_CNF='/etc/rsyslog.conf'
AUDITD_CNF='/etc/audit/auditd.conf'
AUDIT_RULES='/etc/audit/audit.rules'
LOGR_SYSLOG='/etc/logrotate.d/syslog'
ANACRONTAB='/etc/anacrontab'
CRONTAB='/etc/crontab'
CRON_HOURLY='/etc/cron.hourly'
CRON_DAILY='/etc/cron.daily'
CRON_WEEKLY='/etc/cron.weekly'
CRON_MONTHLY='/etc/cron.monthly'
CRON_DIR='/etc/cron.d'
AT_ALLOW='/etc/at.allow'
AT_DENY='/etc/at.deny'
CRON_ALLOW='/etc/cron.allow'
CRON_DENY='/etc/cron.deny'
SSHD_CFG='/etc/ssh/sshd_config'
SYSTEM_AUTH='/etc/pam.d/system-auth'
PWQUAL_CNF='/etc/security/pwquality.conf'
PASS_AUTH='/etc/pam.d/password-auth'
PAM_SU='/etc/pam.d/su'
GROUP='/etc/group'
LOGIN_DEFS='/etc/login.defs'
PASSWD='/etc/passwd'
SHADOW='/etc/shadow'
GSHADOW='/etc/gshadow'
BASHRC='/etc/bashrc'
PROF_D='/etc/profile.d'
MOTD='/etc/motd'
ISSUE='/etc/issue'
ISSUE_NET='/etc/issue.net'
BANNER_MSG='/etc/dconf/db/gdm.d/01-banner-message'
function separate_partition {
# Test that the supplied file system is a separate partition
local filesystem="${1}"
grep -q "[[:space:]]${filesystem}[[:space:]]" "${FSTAB}" || return
}
function mount_option {
local filesystem="${1}"
local mnt_option="${2}"
grep "[[:space:]]${filesystem}[[:space:]]" "${FSTAB}" | grep -q "${mnt_option}" || return
mount | grep "[[:space:]]${filesystem}[[:space:]]" | grep -q "${mnt_option}" || return
}
function centos_gpg_key_installed {
# Test CentOS GPG Key is installed
local centos_off_str='gpg(CentOS-7 Key (CentOS 7 Official Signing Key) <[email protected]>)'
rpm -q --queryformat "%{SUMMARY}\n" gpg-pubkey | grep -q "${centos_off_str}" || return
}
function yum_gpgcheck {
# Check that gpgcheck is Globally Activated
cut -d \# -f1 ${YUM_CONF} | grep 'gpgcheck' | grep -q 'gpgcheck=1' || return
}
function yum_update {
# Check for outstanding pkg update with yum
yum -q check-update || return
}
function pkg_integrity {
# Verify the installed packages by comparing the installed files against file info stored in the pkg
local rpm_out
rpm_out="$(rpm -qVa | awk '$2 != "c" { print $0}')"
[[ -z "${rpm_out}" ]] || return
}
function rpm_installed {
# Test whether an rpm is installed
local rpm="${1}"
local rpm_out
rpm_out="$(rpm -q --queryformat "%{NAME}\n" ${rpm})"
[[ "${rpm}" = "${rpm_out}" ]] || return
}
function verify_selinux_policy {
# Verify SELinux policy in /etc/selinux/config
cut -d \# -f1 ${SELINUX_CFG} | grep 'SELINUXTYPE=' | tr -d '[[:space:]]' | grep -q 'SELINUXTYPE=targeted' || return
}
function rpm_not_installed {
# Check that the supplied rpm $1 is not installed
local rpm="${1}"
rpm -q ${rpm} | grep -q "package ${rpm} is not installed" || return
}
function unconfined_procs {
# Test for unconfined daemons
local ps_out
ps_out="$(ps -eZ | egrep 'initrc|unconfined' | egrep -v 'bash|ps|grep')"
[[ -n "${ps_out}" ]] || return
}
function check_grub_owns {
# Check User/Group Owner on grub.cfg file
stat -L -c "%u %g" ${GRUB_CFG} | grep -q '0 0' || return
}
function check_grub_perms {
# Check Perms on grub.cfg file
stat -L -c "%a" ${GRUB_CFG} | grep -q '.00' || return
}
function check_file_perms {
# Check Perms on a supplied file match supplied pattern
local file="${1}"
local pattern="${2}"
stat -L -c "%a" ${file} | grep -q "${pattern}" || return
}
function check_root_owns {
# Check User/Group Owner on the specified file
local file="${1}"
stat -L -c "%u %g" ${file} | grep -q '0 0' || return
}
function check_boot_pass {
grep -q 'set superusers=' "${GRUB_CFG}"
if [[ "$?" -ne 0 ]]; then
grep -q 'set superusers=' ${GRUB_DIR}/* || return
file="$(grep 'set superusers' ${GRUB_DIR}/* | cut -d: -f1)"
grep -q 'password' "${file}" || return
else
grep -q 'password' "${GRUB_CFG}" || return
fi
}
function check_svc_not_enabled {
# Verify that the service $1 is not enabled
local service="$1"
systemctl list-unit-files | grep -qv "${service}" && return
systemctl is-enabled "${service}" | grep -q 'enabled' || return
}
function check_svc_enabled {
# Verify that the service $1 is enabled
local service="$1"
systemctl list-unit-files | grep -q "${service}.service" || return
systemctl is-enabled "${service}" | grep -q 'enabled' && return
}
function ntp_cfg {
cut -d\# -f1 ${NTP_CONF} | egrep "restrict{1}[[:space:]]+default{1}" ${NTP_CONF} | grep kod \
| grep nomodify | grep notrap | grep nopeer | grep -q noquery || return
cut -d\# -f1 ${NTP_CONF} | egrep "restrict{1}[[:space:]]+\-6{1}[[:space:]]+default" | grep kod \
| grep nomodify | grep notrap | grep nopeer | grep -q noquery || return
cut -d\# -f1 ${NTP_CONF} | egrep -q "^[[:space:]]*server" || return
cut -d\# -f1 ${SYSCON_NTPD} | grep "OPTIONS=" | grep -q "ntp:ntp" || return
}
function restrict_core_dumps {
# Verify that suid programs cannot dump their core
egrep -q "\*{1}[[:space:]]+hard[[:space:]]+core[[:space:]]+0" "${LIMITS_CNF}" || return
cut -d\# -f1 ${SYSCTL_CNF} | grep fs.suid_dumpable | cut -d= -f2 | tr -d '[[:space:]]' | grep -q '0' || return
}
function chk_sysctl_cnf {
# Check the sysctl_conf file contains a particular flag, set to a particular value
local flag="$1"
local value="$2"
local sysctl_cnf="$3"
cut -d\# -f1 ${sysctl_cnf} | grep "${flag}" | cut -d= -f2 | tr -d '[[:space:]]' | grep -q "${value}" || return
}
function chk_sysctl {
local flag="$1"
local value="$2"
sysctl "${flag}" | cut -d= -f2 | tr -d '[[:space:]]' | grep -q "${value}" || return
}
function chk_latest_rel {
grep -q "${LATEST_REL_STR}" "${CENTOS_REL}" || return
}
function sticky_wrld_w_dirs {
dirs="$(df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -type d \
\( -perm -0002 -a ! -perm -1000 \))"
[[ -z "${dirs}" ]] || return
}
function check_umask {
cut -d\# -f1 /etc/sysconfig/init | grep -q "umask[[:space:]]027" || return
}
function check_def_tgt {
#Check that the default boot target is multi-user.target
local default_tgt
default_tgt="$(systemctl get-default)"
[[ "${default_tgt}" = "multi-user.target" ]] || return
}
function mta_local_only {
# If port 25 is being listened on, check it is on the loopback address
netstat_out="$(netstat -an | grep "LIST" | grep ":25[[:space:]]")"
if [[ "$?" -eq 0 ]] ; then
ip=$(echo ${netstat_out} | cut -d: -f1 | cut -d" " -f4)
[[ "${ip}" = "127.0.0.1" ]] || return
fi
}
function ip6_router_advertisements_dis {
# Check that IPv6 Router Advertisements are disabled
# If ipv6 is disabled then we don't mind what IPv6 router advertisements are set to
# If ipv6 is enabled then both settings should be set to zero
chk_sysctl net.ipv6.conf.all.disable_ipv6 1 && return
chk_sysctl net.ipv6.conf.all.accept_ra 0 || return
chk_sysctl net.ipv6.conf.default.accept_ra 0 || return
}
function chk_file_exists {
local file="$1"
[[ -f "${file}" ]] || return
}
function chk_hosts_deny_content {
# Check the hosts.deny file resembles ALL: ALL
cut -d\# -f1 ${HOSTS_DENY} | grep -q "ALL[[:space:]]*:[[:space:]]*ALL" || return
}
function chk_cis_cnf {
local protocol="$1"
local file="$2"
grep -q "install[[:space:]]${protocol}[[:space:]]/bin/true" ${file} || return
}
function chk_rsyslog_content {
# rsyslog should be configured to send logs to a remote host
# grep output should resemble
# *.* @@loghost.example.com
grep -q "^*.*[^I][^I]*@" ${RSYSLOG_CNF} || return
}
function audit_log_storage_size {
# Check the max size of the audit log file is configured
cut -d\# -f1 ${AUDITD_CNF} | egrep -q "max_log_file[[:space:]]|max_log_file=" || return
}
function dis_on_audit_log_full {
# Check auditd.conf is configured to notify the admin and halt the system when audit logs are full
cut -d\# -f2 ${AUDITD_CNF} | grep 'space_left_action' | cut -d= -f2 | tr -d '[[:space:]]' | grep -q 'email' || return
cut -d\# -f2 ${AUDITD_CNF} | grep 'action_mail_acct' | cut -d= -f2 | tr -d '[[:space:]]' | grep -q 'root' || return
cut -d\# -f2 ${AUDITD_CNF} | grep 'admin_space_left_action' | cut -d= -f2 | tr -d '[[:space:]]' | grep -q 'halt' || return
}
function keep_all_audit_info {
# Check auditd.conf is configured to retain audit logs
cut -d\# -f2 ${AUDITD_CNF} | grep 'max_log_file_action' | cut -d= -f2 | tr -d '[[:space:]]' | grep -q 'keep_logs' || return
}
function audit_procs_prior_2_auditd {
# Check lines that start with linux have the audit=1 parameter set
grep_grub="$(grep "^[[:space:]]*linux" ${GRUB_CFG} | grep -v 'audit=1')"
[[ -z "${grep_grub}" ]] || return
}
function audit_date_time {
# Confirm that the time-change lines specified below do appear in the audit.rules file
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+time-change" | egrep "\-S[[:space:]]+settimeofday" \
| egrep "\-S[[:space:]]+adjtimex" | egrep "\-F[[:space:]]+arch=b64" | egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+time-change" | egrep "\-S[[:space:]]+settimeofday" \
| egrep "\-S[[:space:]]+adjtimex" | egrep "\-F[[:space:]]+arch=b32" | egrep "\-S[[:space:]]+stime" | egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+time-change" | egrep "\-F[[:space:]]+arch=b64" \
| egrep "\-S[[:space:]]+clock_settime" | egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+time-change" | egrep "\-F[[:space:]]+arch=b32" \
| egrep "\-S[[:space:]]+clock_settime" | egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+time-change" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/etc\/localtime" || return
}
function audit_user_group {
# Confirm that the identity lines specified below do appear in the audit.rules file
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+identity" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/etc\/group" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+identity" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/etc\/passwd" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+identity" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/etc\/gshadow" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+identity" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/etc\/shadow" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+identity" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/etc\/security\/opasswd" || return
}
function audit_network_env {
# Confirm that the system-locale lines specified below do appear in the audit.rules file
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+system-locale" | egrep "\-S[[:space:]]+sethostname" \
| egrep "\-S[[:space:]]+setdomainname" | egrep "\-F[[:space:]]+arch=b64" | egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+system-locale" | egrep "\-S[[:space:]]+sethostname" \
| egrep "\-S[[:space:]]+setdomainname" | egrep "\-F[[:space:]]+arch=b32" | egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+system-locale" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/etc\/issue" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+system-locale" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/etc\/issue.net" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+system-locale" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/etc\/hosts" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+system-locale" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/etc\/sysconfig\/network" || return
}
function audit_logins_logouts {
# Confirm that the logins lines specified below do appear in the audit.rules file
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+logins" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/var\/log\/faillog" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+logins" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/var\/log\/lastlog" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+logins" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/var\/log\/tallylog" || return
}
function audit_session_init {
# Confirm that the logins lines specified below do appear in the audit.rules file
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+session" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/var\/run\/utmp" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+session" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/var\/log\/wtmp" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+session" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/var\/log\/btmp" || return
}
function audit_sys_mac {
# Confirm that the logins lines specified below do appear in the audit.rules file
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+MAC-policy" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/etc\/selinux\/" || return
}
function audit_dac_perm_mod_events {
# Confirm that perm_mod lines matching the patterns below do appear in the audit.rules file
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+perm_mod" | egrep "\-S[[:space:]]+chmod" \
| egrep "\-S[[:space:]]+fchmod" | egrep "\-S[[:space:]]+fchmodat" | egrep "\-F[[:space:]]+arch=b64" \
| egrep "\-F[[:space:]]+auid>=1000" | egrep "\-F[[:space:]]+auid\!=4294967295" \
| egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+perm_mod" | egrep "\-S[[:space:]]+chmod" \
| egrep "\-S[[:space:]]+fchmod" | egrep "\-S[[:space:]]+fchmodat" | egrep "\-F[[:space:]]+arch=b32" \
| egrep "\-F[[:space:]]+auid>=1000" | egrep "\-F[[:space:]]+auid\!=4294967295" \
| egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+perm_mod" | egrep "\-S[[:space:]]+chown" \
| egrep "\-S[[:space:]]+fchown" | egrep "\-S[[:space:]]+fchownat" | egrep "\-S[[:space:]]+fchown" \
| egrep "\-F[[:space:]]+arch=b64" | egrep "\-F[[:space:]]+auid>=1000" | egrep "\-F[[:space:]]+auid\!=4294967295" \
| egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+perm_mod" | egrep "\-S[[:space:]]+chown" \
| egrep "\-S[[:space:]]+fchown" | egrep "\-S[[:space:]]+fchownat" | egrep "\-S[[:space:]]+fchown" \
| egrep "\-F[[:space:]]+arch=b32" | egrep "\-F[[:space:]]+auid>=1000" | egrep "\-F[[:space:]]+auid\!=4294967295" \
| egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+perm_mod" | egrep "\-S[[:space:]]+setxattr" \
| egrep "\-S[[:space:]]+lsetxattr" | egrep "\-S[[:space:]]+fsetxattr" | egrep "\-S[[:space:]]+removexattr" \
| egrep "\-S[[:space:]]+lremovexattr" | egrep "\-S[[:space:]]+fremovexattr" | egrep "\-F[[:space:]]+arch=b64" \
| egrep "\-F[[:space:]]+auid>=1000" | egrep "\-F[[:space:]]+auid\!=4294967295" \
| egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+perm_mod" | egrep "\-S[[:space:]]+setxattr" \
| egrep "\-S[[:space:]]+lsetxattr" | egrep "\-S[[:space:]]+fsetxattr" | egrep "\-S[[:space:]]+removexattr" \
| egrep "\-S[[:space:]]+lremovexattr" | egrep "\-S[[:space:]]+fremovexattr" | egrep "\-F[[:space:]]+arch=b32" \
| egrep "\-F[[:space:]]+auid>=1000" | egrep "\-F[[:space:]]+auid\!=4294967295" \
| egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
}
function unsuc_unauth_acc_attempts {
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+access" | egrep "\-S[[:space:]]+creat" \
| egrep "\-S[[:space:]]+open" | egrep "\-S[[:space:]]+openat" | egrep "\-S[[:space:]]+truncate" \
| egrep "\-S[[:space:]]+ftruncate" | egrep "\-F[[:space:]]+arch=b64" | egrep "\-F[[:space:]]+auid>=1000" \
| egrep "\-F[[:space:]]+auid\!=4294967295" | egrep "\-F[[:space:]]exit=\-EACCES" \
| egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+access" | egrep "\-S[[:space:]]+creat" \
| egrep "\-S[[:space:]]+open" | egrep "\-S[[:space:]]+openat" | egrep "\-S[[:space:]]+truncate" \
| egrep "\-S[[:space:]]+ftruncate" | egrep "\-F[[:space:]]+arch=b32" | egrep "\-F[[:space:]]+auid>=1000" \
| egrep "\-F[[:space:]]+auid\!=4294967295" | egrep "\-F[[:space:]]exit=\-EACCES" \
| egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+access" | egrep "\-S[[:space:]]+creat" \
| egrep "\-S[[:space:]]+open" | egrep "\-S[[:space:]]+openat" | egrep "\-S[[:space:]]+truncate" \
| egrep "\-S[[:space:]]+ftruncate" | egrep "\-F[[:space:]]+arch=b64" | egrep "\-F[[:space:]]+auid>=1000" \
| egrep "\-F[[:space:]]+auid\!=4294967295" | egrep "\-F[[:space:]]exit=\-EPERM" \
| egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+access" | egrep "\-S[[:space:]]+creat" \
| egrep "\-S[[:space:]]+open" | egrep "\-S[[:space:]]+openat" | egrep "\-S[[:space:]]+truncate" \
| egrep "\-S[[:space:]]+ftruncate" | egrep "\-F[[:space:]]+arch=b32" | egrep "\-F[[:space:]]+auid>=1000" \
| egrep "\-F[[:space:]]+auid\!=4294967295" | egrep "\-F[[:space:]]exit=\-EPERM" \
| egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
}
function coll_priv_cmds {
local priv_cmds
priv_cmds="$(find / -xdev \( -perm -4000 -o -perm -2000 \) -type f)"
for cmd in ${priv_cmds} ; do
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+privileged" | egrep "\-F[[:space:]]+path=${cmd}" \
| egrep "\-F[[:space:]]+perm=x" | egrep "\-F[[:space:]]+auid>=1000" | egrep "\-F[[:space:]]+auid\!=4294967295" \
| egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
done
}
function coll_suc_fs_mnts {
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+mounts" | egrep "\-S[[:space:]]+mount" \
| egrep "\-F[[:space:]]+arch=b64" | egrep "\-F[[:space:]]+auid>=1000" \
| egrep "\-F[[:space:]]+auid\!=4294967295" \
| egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+mounts" | egrep "\-S[[:space:]]+mount" \
| egrep "\-F[[:space:]]+arch=b32" | egrep "\-F[[:space:]]+auid>=1000" \
| egrep "\-F[[:space:]]+auid\!=4294967295" \
| egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
}
function coll_file_del_events {
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+delete" | egrep "\-S[[:space:]]+unlink" \
| egrep "\-F[[:space:]]+arch=b64" | egrep "\-S[[:space:]]+unlinkat" | egrep "\-S[[:space:]]+rename" \
| egrep "\-S[[:space:]]+renameat" | egrep "\-F[[:space:]]+auid>=1000" \
| egrep "\-F[[:space:]]+auid\!=4294967295" \
| egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+delete" | egrep "\-S[[:space:]]+unlink" \
| egrep "\-F[[:space:]]+arch=b32" | egrep "\-S[[:space:]]+unlinkat" | egrep "\-S[[:space:]]+rename" \
| egrep "\-S[[:space:]]+renameat" | egrep "\-F[[:space:]]+auid>=1000" \
| egrep "\-F[[:space:]]+auid\!=4294967295" \
| egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
}
function coll_chg2_sysadm_scope {
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+scope" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/etc\/sudoers" || return
}
function coll_sysadm_actions {
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+actions" | egrep "\-p[[:space:]]+wa" \
| egrep -q "\-w[[:space:]]+\/var\/log\/sudo.log" || return
}
function kmod_lod_unlod {
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+modules" | egrep "\-p[[:space:]]+x" \
| egrep -q "\-w[[:space:]]+\/sbin\/insmod" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+modules" | egrep "\-p[[:space:]]+x" \
| egrep -q "\-w[[:space:]]+\/sbin\/rmmod" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+modules" | egrep "\-p[[:space:]]+x" \
| egrep -q "\-w[[:space:]]+\/sbin\/modprobe" || return
cut -d\# -f1 ${AUDIT_RULES} | egrep "\-k[[:space:]]+modules" | egrep "\-S[[:space:]]+delete_module" \
| egrep "\-F[[:space:]]+arch=b64" | egrep "\-S[[:space:]]+init_module" \
| egrep -q "\-a[[:space:]]+always,exit|\-a[[:space:]]+exit,always" || return
}
function audit_cfg_immut {
# There should be a "-e 2" at the end of the audit.rules file
cut -d\# -f1 ${AUDIT_RULES} | egrep -q "^-e[[:space:]]+2" || return
}
function logrotate_cfg {
[[ -f "${LOGR_SYSLOG}" ]] || return
local timestamp
timestamp=$(date '+%Y%m%d_%H%M%S')
local tmp_data="/tmp/logrotate.tmp.${timestamp}"
local file_list="/var/log/messages /var/log/secure /var/log/maillog /var/log/spooler /var/log/boot.log /var/log/cron"
local line_num
line_num=$(grep -n '{' "${LOGR_SYSLOG}" | cut -d: -f1)
line_num=$((${line_num} - 1))
head -${line_num} "${LOGR_SYSLOG}" > ${tmp_data}
for file in ${file_list} ; do
grep -q "${file}" ${tmp_data} || return
done
rm "${tmp_data}"
}
function atd_cfg {
[[ ! -f ${AT_DENY} ]] || return
[[ -f ${AT_ALLOW} ]] || return
check_root_owns "${AT_ALLOW}"
check_file_perms "${AT_ALLOW}" 600
}
function at_cron_auth_users {
[[ ! -f ${AT_DENY} ]] || return
[[ ! -f ${CRON_DENY} ]] || return
check_root_owns "${CRON_ALLOW}"
check_root_owns "${AT_ALLOW}"
check_file_perms "${CRON_ALLOW}" 600
check_file_perms "${AT_ALLOW}" 600
}
function chk_param {
local file="${1}"
local parameter="${2}"
local value="${3}"
cut -d\# -f1 ${file} | egrep -q "^${parameter}[[:space:]]+${value}" || return
}
function ssh_maxauthtries {
local allowed_max="${1}"
local actual_value
actual_value=$(cut -d\# -f1 ${SSHD_CFG} | grep 'MaxAuthTries' | cut -d" " -f2)
[[ ${actual_value} -le ${allowed_max} ]] || return
}
function ssh_access {
local allow_users
local allow_groups
local deny_users
local deny_users
allow_users="$(cut -d\# -f1 ${SSHD_CFG} | grep "AllowUsers" | cut -d" " -f2)"
allow_groups="$(cut -d\# -f1 ${SSHD_CFG} | grep "AllowGroups" | cut -d" " -f2)"
deny_users="$(cut -d\# -f1 ${SSHD_CFG} | grep "DenyUsers" | cut -d" " -f2)"
deny_groups="$(cut -d\# -f1 ${SSHD_CFG} | grep "DenyGroups" | cut -d" " -f2)"
[[ -n "${allow_users}" ]] || return
[[ -n "${allow_groups}" ]] || return
[[ -n "${deny_users}" ]] || return
[[ -n "${deny_groups}" ]] || return
}
function pass_hash_algo {
local algo="${1}"
authconfig --test | grep 'hashing' | grep -q "${algo}" || return
}
function pass_req_params {
# verify the pam_pwquality.so params in /etc/pam.d/system-auth
grep pam_pwquality.so ${SYSTEM_AUTH} | grep 'password' | grep 'requisite' | grep 'try_first_pass' | grep 'local_users_only' | grep 'retry=3' | grep -q 'authtok_type=' || return
grep -q 'minlen=14' ${PWQUAL_CNF} || return
grep -q 'dcredit=-1' ${PWQUAL_CNF} || return
grep -q 'ucredit=-1' ${PWQUAL_CNF} || return
grep -q 'ocredit=-1' ${PWQUAL_CNF} || return
grep -q 'lcredit=-1' ${PWQUAL_CNF} || return
}
function failed_pass_lock {
egrep "auth[[:space:]]+required" ${PASS_AUTH} | grep -q 'pam_deny.so' || return
egrep "auth[[:space:]]+required" ${PASS_AUTH} | grep 'pam_faillock.so' | grep 'preauth' | grep 'audit' | grep 'silent' | grep 'deny=5' | grep -q 'unlock_time=900' || return
grep 'auth' ${PASS_AUTH} | grep 'pam_unix.so' | egrep -q "\[success=1[[:space:]]+default=bad\]" || return
grep 'auth' ${PASS_AUTH} | grep 'pam_faillock.so' | grep 'authfail' | grep 'audit' | grep 'deny=5' | grep 'unlock_time=900' | egrep -q "\[default=die\]" || return
egrep "auth[[:space:]]+sufficient" ${PASS_AUTH} | grep 'pam_faillock.so' | grep 'authsucc' | grep 'audit' | grep 'deny=5' | grep -q 'unlock_time=900' || return
egrep "auth[[:space:]]+required" ${PASS_AUTH} | grep -q 'pam_deny.so' || return
egrep "auth[[:space:]]+required" ${SYSTEM_AUTH} | grep -q 'pam_env.so' || return
egrep "auth[[:space:]]+required" ${SYSTEM_AUTH} | grep 'pam_faillock.so' | grep 'preauth' | grep 'audit' | grep 'silent' | grep 'deny=5' | grep -q 'unlock_time=900' || return
grep 'auth' ${SYSTEM_AUTH} | grep 'pam_unix.so' | egrep -q "\[success=1[[:space:]]+default=bad\]" || return
grep 'auth' ${SYSTEM_AUTH} | grep 'pam_faillock.so' | grep 'authfail' | grep 'audit' | grep 'deny=5' | grep 'unlock_time=900' | egrep -q "\[default=die\]" || return
egrep "auth[[:space:]]+sufficient" ${SYSTEM_AUTH} | grep 'pam_faillock.so' | grep 'authsucc' | grep 'audit' | grep 'deny=5' | grep -q 'unlock_time=900' || return
egrep "auth[[:space:]]+required" ${SYSTEM_AUTH} | grep -q 'pam_deny.so' || return
}
function lim_passwd_reuse {
egrep "auth[[:space:]]+sufficient" ${SYSTEM_AUTH} | grep 'pam_unix.so' | grep -q 'remember=5' || return
}
function su_access {
egrep "auth[[:space:]]+required" "${PAM_SU}" | grep 'pam_wheel.so' | grep -q 'use_uid' || return
grep 'wheel' "${GROUP}" | cut -d: -f4 | grep -q 'root' || return
}
function dis_sys_accs {
# Check that system accounts are disabled
local accounts
accounts="$(egrep -v "^\+" /etc/passwd | awk -F: '($1!="root" && $1!="sync" && $1!="shutdown" \
&& $1!="halt" && $3<1000 && $7!="/sbin/nologin") {print}')"
[[ -z "${accounts}" ]] || return
}
function root_def_grp {
local gid1
local gid2
gid1="$(grep "^root:" "${PASSWD}" | cut -d: -f4)"
[[ "${gid1}" -eq 0 ]] || return
gid2="$(id -g root)"
[[ "${gid2}" -eq 0 ]] || return
}
function def_umask_for_users {
cut -d\# -f1 "${BASHRC}" | egrep -q "umask[[:space:]]+077" || return
egrep -q "umask[[:space:]]+077" ${PROF_D}/* || return
}
function inactive_usr_acs_locked {
# After being inactive for a period of time the account should be disabled
local days
local inactive_threshold=35
days="$(useradd -D | grep INACTIVE | cut -d= -f2)"
[[ ${days} -ge ${inactive_threshold} ]] || return
}
function warning_banners {
# Check that system login banners don't contain any OS information
local motd
local issue
local issue_net
motd="$(egrep '(\\v|\\r|\\m|\\s)' ${MOTD})"
issue="$(egrep '(\\v|\\r|\\m|\\s)' ${ISSUE})"
issue_net="$(egrep '(\\v|\\r|\\m|\\s)' ${ISSUE_NET})"
[[ -z "${motd}" ]] || return
[[ -z "${issue}" ]] || return
[[ -z "${issue_net}" ]] || return
}
function gnome_banner {
# On a host aiming to meet CIS requirements GNOME is unlikely to be installed
# Thus the function says if the file exists then it should have these lines in it
if [[ -f "${BANNER_MSG}" ]] ; then
egrep '[org/gnome/login-screen]' ${BANNER_MSG} || return
egrep 'banner-message-enable=true' ${BANNER_MSG} || return
egrep 'banner-message-text=' ${BANNER_MSG} || return
fi
}
function unowned_files {
local uo_files
uo_files="$(df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -nouser)"
[[ -z "${uo_files}" ]] || return
}
function ungrouped_files {
local ug_files
ug_files="$(df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -nogroup)"
[[ -z "${ug_files}" ]] || return
}
function suid_exes {
# For every suid exe on the host use the rpm cmd to verify that it should be suid executable
# If the rpm cmd returns no output then the rpm is as it was when it was installed so no prob
local suid_exes
suid_exes="$(df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -type f -perm -4000 -print)"
for suid_exe in ${suid_exes}
do
rpm_out="$(rpm -V $(rpm -qf ${suid_exe}))"
[[ -z "${rpm_out}" ]] || return
done
}
function sgid_exes {
# For every sgid exe on the host use the rpm cmd to verify that it should be sgid executable
# If the rpm cmd returns no output then the rpm is as it was when it was installed so no prob
local sgid_exes
sgid_exes="$(df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -type f -perm -4000 -print)"
for sgid_exe in ${sgid_exes}
do
rpm_out="$(rpm -V $(rpm -qf ${sgid_exe}))"
[[ -z "${rpm_out}" ]] || return
done
}
function passwd_field_chk {
local shadow_out
shadow_out="$(awk -F: '($2 == "" ) { print $1 }' ${SHADOW})"
[[ -z "${shadow_out}" ]] || return
}
function nis_in_file {
# Check for lines starting with + in the supplied file $1
# In /etc/{passwd,shadow,group} it used to be a marker to insert data from NIS
# There shouldn't be any entries like this
local file="${1}"
local grep_out
grep_out="$(grep '^+:' ${file})"
[[ -z "${grep_out}" ]] || return
}
function no_uid0_other_root {
local grep_passwd
grep_passwd="$(awk -F: '($3 == 0) { print $1 }' ${PASSWD})"
[[ "${grep_passwd}" = "root" ]] || return
}
function world_w_dirs {
dirs="$(df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -type f -perm -0002)"
[[ -z "${dirs}" ]] || return
}
function root_path {
# There should not be an empty dir in $PATH
local grep=/bin/grep
local sed=/bin/sed
path_grep="$(echo ${PATH} | ${grep} '::')"
[[ -z "${path_grep}" ]] || return
# There should not be a trailing : on $PATH
path_grep="$(echo ${PATH} | ${grep} :$)"
[[ -z "${path_grep}" ]] || return
path_dirs="$(echo $PATH | ${sed} -e 's/::/:/' -e 's/:$//' -e 's/:/ /g')"
for dir in ${path_dirs} ; do
# PATH should not contain .
[[ "${dir}" != "." ]] || return
#$dir should be a directory
[[ -d "${dir}" ]] || return
local ls_out
ls_out="$(ls -ldH ${dir})"
if is_group_writable ${ls_out} ; then return 1 ; else return 0 ; fi
if is_other_writable ${ls_out} ; then return 1 ; else return 0 ; fi
# Directory should be owned by root
dir_own="$(echo ${ls_out} | awk '{print $3}')"
[[ "${dir_own}" = "root" ]] || return
done
}
function is_group_readable {
local ls_output="${1}"
# 5th byte of ls output is the field for group readable
[[ "${ls_output:4:1}" = "r" ]] || return
}
function is_group_writable {
local ls_output="${1}"
# 6th byte of ls output is the field for group writable
[[ "${ls_output:5:1}" = "w" ]] || return
}
function is_group_executable {
local ls_output="${1}"
# 7th byte of ls output is the field for group readable
[[ "${ls_output:6:1}" = "r" ]] || return
}
function is_other_readable {
local ls_output="${1}"
# 8th byte of ls output is the field for other readable
[[ "${ls_output:7:1}" = "r" ]] || return
}
function is_other_writable {
local ls_output="${1}"
# 9th byte of ls output is the field for other writable
[[ "${ls_output:8:1}" = "w" ]] || return
}
function is_other_executable {
local ls_output="${1}"
# 10th byte of ls output is the field for other executable
[[ "${ls_output:9:1}" = "x" ]] || return
}
function home_dir_perms {
dirs="$(grep -v 'root|halt|sync|shutdown' ${PASSWD} | awk -F: '($7 != "/sbin/nologin") { print $6 }')"
[[ -z "${dirs}" ]] && return
for dir in ${dirs} ; do
[[ -d "${dir}" ]] || continue
local ls_out
ls_out="$(ls -ldH ${dir})"
if is_group_writable ${ls_out} ; then return 1 ; else return 0 ; fi
if is_other_readable ${ls_out} ; then return 1 ; else return 0 ; fi
if is_other_writable ${ls_out} ; then return 1 ; else return 0 ; fi
if is_other_executable ${ls_out} ; then return 1 ; else return 0 ; fi
done
}
function dot_file_perms {
dirs="$(grep -v 'root|halt|sync|shutdown' ${PASSWD} | awk -F: '($7 != "/sbin/nologin") { print $6 }')"
for dir in ${dirs} ; do
[[ -d "${dir}" ]] || continue
for file in ${dir}/.[A-Za-z0-9]* ; do
if [[ ! -h "${file}" && -f "${file}" ]] ; then
local ls_out
ls_out="$(ls -ldH ${dir})"
if is_group_writable ${ls_out} ; then return 1 ; else return 0 ; fi
if is_other_writable ${ls_out} ; then return 1 ; else return 0 ; fi
fi
done
done
}
function dot_rhosts_files {
dirs="$(grep -v 'root|halt|sync|shutdown' ${PASSWD} | awk -F: '($7 != "/sbin/nologin") { print $6 }')"
for dir in ${dirs} ; do
[[ -d "${dir}" ]] || continue
local file="${dir}/.rhosts"
if [[ ! -h "${file}" && -f "${file}" ]] ; then
return 1
else
return 0
fi
done
}
function chk_groups_passwd {
# We don't want to see any groups in /etc/passwd that aren't in /etc/group
group_ids="$(cut -s -d: -f4 ${PASSWD} | sort -u)"
for group_id in ${group_ids} ; do
grep -q -P "^.*?:x:${group_id}:" ${GROUP} || return
done
}
function chk_home_dirs_exist {
#Check that users home directory do all exist
while read user uid dir ; do
if [[ "${uid}" -ge 1000 && ! -d "${dir}" && "${user}" != "nfsnobody" ]] ; then
return 1
fi
done < <(awk -F: '{ print $1 " " $3 " " $6 }' ${PASSWD})
}
function chk_home_dirs_owns {
#Check that users home directory do all exist
while read user uid dir ; do
if [[ "${uid}" -ge 1000 && ! -d "${dir}" && "${user}" != "nfsnobody" ]] ; then
local owner
owner="$(stat -L -c "%U" "${dir}")"
[[ "${owner}" = "${user}" ]] || return
fi
done < <(awk -F: '{ print $1 " " $3 " " $6 }' ${PASSWD})
}