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linux_baseline_check.sh
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#!/bin/bash
function get_ip_info {
local ipList=`ifconfig | grep inet |grep -v inet6|grep -v 127|sed 's/^[ ]*//g'|cut -d" " -f2`
echo $ipList
}
function get_basic_info {
echo [·] collect basic info
scanTime=$(date "+%Y-%m-%d %H:%M:%S")
hostname=`hostname`
macaddr=$(echo $(ifconfig|grep "ether"|sed 's/^[ ]*//g'|cut -d" " -f2)|sed 's/ /;/g')
ipList=$(get_ip_info|sed 's/ /;/g')
kernelVersion=`uname -r`
if [[ $(cat /proc/version) =~ "Red Hat" ]]; then
osVersion=`cat /etc/redhat-release|cut -f1,4 -d" "`
fi
basic_info={\"scanTime\":\"$scanTime\",\"hostname\":\"$hostname\",\"macaddr\":\"$macaddr\",\"ipList\":\"$ipList\",\"kernelVersion\":\"$kernelVersion\",\"osVersion\":\"$osVersion\"}
echo $basic_info
}
function init_check {
# 1. init configuration
echo [·] check init configuration
# 1.1 file system configuration
# 1.1.1 /tmp separate mount
local tmpIfSeparate #=""
local tmpIfNoexec #=""
local tmpIfNosuid #=""
local res=$(mount|grep "/tmp ")
if [[ -z $res ]]; then
echo -e "\033[31m-[-] /tmp/ not mounted on separate dick\033[0m"
tmpIfSeparate="False"
tmpIfNoexec="False"
tmpIfNosuid="False"
else
tmpIfSeparate="True"
tmpIfNoexec="True"
tmpIfNosuid="True"
fi
if [[ $tmpIfSeparate == "True" ]]; then
#mount|grep "/sys/kernel/debug " |while read res;do
while read res;do
#echo "mount | grep /sys --result-->" $res
# 1.1.2 /tmp noexec nosuid
local diskPart=$(echo $res|cut -d" " -f3)
if [[ ! $res =~ "noexec" ]];then
echo -e "\033[31m-[-] no noexec option on $diskPart partion\033[0m"
tmpIfNoexec="False"
if [[ ! $res =~ "nosuid" ]];then
echo -e "\033[31m-[-] no nosuid option on $diskPart partion\033[0m"
tmpIfNosuid="False"
fi
elif [[ ! $res =~ "nosuid" ]];then
echo -e "\033[31m-[-] no nosuid option on $diskPart partion\033[0m"
tmpIfNosuid="False"
fi
done < <(mount | grep "/tmp ")
fi
tmp_partition_info={\"tmpIfSeparate\":\"$tmpIfSeparate\",\"tmpIfNoexec\":\"$tmpIfNoexec\",\"tmpIfNosuid\":\"$tmpIfNosuid\"}
#echo $tmp_partition_info
# 1.2 secure boot configuration
if [[ -f /boot/grub2/grub.cfg ]];then
grubcfgIfExist="True"
grubcfgPermission="0600"
grubcfgIfSetPasswd="True"
else
grubcfgIfExist="False"
grubcfgPermission="0000"
grubcfgIfSetPasswd="False"
fi
if [[ $grubcfgIfExist == "True" ]]; then
# 1.2.1 /boot/grub2/grub.cfg permission /boot/grub2/user.cfg permission 0600 root:root
res=$(stat /boot/grub2/grub.cfg |while read x;do if [[ $x =~ "Uid" ]] && [[ $x =~ "(" ]]; then echo $x;fi;done|cut -d"(" -f2,3,4)
grubcfgPermission=$(echo $res|cut -d"/" -f1)
if [[ $(echo $res|cut -d"/" -f1) = "0600" ]]; then
echo -e "\033[32m-[+] /boot/grub2/grub.cfg permission is 0600 \033[0m"
else
echo -e "\033[31m-[-] /boot/grub2/grub.cfg permission is not 0600 \033[0m"
fi
# 1.2.2 Ensure bootloader password is set
res=$(grep "^GRUB2 PASSWORD" /boot/grub2/grub.cfg)
if [[ -n $res ]]; then
echo -e "\033[32m-[+] /boot/grub2/grub.cfg seted password \033[0m"
grubcfgIfSetPasswd="True"
else
echo -e "\033[31m-[-] /boot/grub2/grub.cfg not set password \033[0m"
grubcfgIfSetPasswd="False"
fi
fi
# 1.2.3 single user mode need authentication
if [[ -f /usr/lib/systemd/system/rescue.service ]] && [[ -f /usr/lib/systemd/system/emergency.service ]]; then
res1=`grep /sbin/sulogin /usr/lib/systemd/system/rescue.service`
res2=`grep /sbin/sulogin /usr/lib/systemd/system/emergency.service`
if [[ $res1 = "ExecStart=-/bin/sh -c \"/usr/sbin/sulogin; /usr/bin/systemctl --fail --no-block default\"" ]] && [[ $res2 = "ExecStart=-/bin/sh -c \"/usr/sbin/sulogin; /usr/bin/systemctl --fail --no-block default\"" ]]; then
echo -e "\033[32m-[+] single user mode need authentication \033[0m"
singleUserModeIfNeedAuth="True"
else
echo -e "\033[31m-[+] single user mode does not need authentication \033[0m"
singleUserModeIfNeedAuth="False"
fi
fi
# 1.3 Mantary Access Control
# 1.3.1 ensure the SELinux state is enforcing
if [[ -f /etc/selinux/config ]]; then
local num=$(sestatus|grep -c enforcing)
if [[ $num -gt 1 ]]; then
echo -e "\033[32m-[+] SELinux state is enforcing \033[0m"
selinuxStateIfEnforcing="True"
else
echo -e "\033[31m-[-] SELinux state is not enforcing \033[0m"
selinuxStateIfEnforcing="False"
fi
fi
# 1.3.2 ensure selinux policy is configured
if [[ -f /etc/selinux/config ]]; then
res=$(sestatus|grep targeted)
if [[ -n $res ]]; then
echo -e "\033[32m-[+] SELinux policy is configured \033[0m"
selinuxPolicyIfConfigured="True"
else
echo -e "\033[31m-[-] SELinux policy is not configure to targeted \033[0m"
selinuxPolicyIfConfigured="False"
fi
fi
boot_secure_info={\"grubcfgIfExist\":\"$grubcfgIfExist\",\"grubcfgPermission\":\"$grubcfgPermission\",\"grubcfgIfSetPasswd\":\"$grubcfgIfSetPasswd\",\"singleUserModeIfNeedAuth\":\"$singleUserModeIfNeedAuth\",\"selinuxStateIfEnforcing\":\"$selinuxStateIfEnforcing\",\"selinuxPolicyIfConfigured\":\"$selinuxPolicyIfConfigured\"}
#echo $boot_secure_info
init_check_res={\"tmp_partition_info\":$tmp_partition_info,\"boot_secure_info\":$boot_secure_info}
}
function service_check {
# 2. service configuration
echo [·] check service configuration
# 2.1 time sync
# 2.1.1 time sync service is installed
if $(rpm -q ntp 1>/dev/null||rpm -q chrony 1>/dev/null) ; then
if $(rpm -q ntp 1>/dev/null) ; then
if [[ -f /etc/ntp.conf ]]; then
local res=$(egrep "^(server|pool)" /etc/ntp.conf)
if [[ -n $res ]]; then
echo -e "\033[32m-[+] remote ntp server is configured \033[0m"
timeSyncServerIfConfigured="True"
else
echo -e "\033[31m-[-] remote ntp server is not configured \033[0m"
timeSyncServerIfConfigured="False"
fi
fi
fi
if $(rpm -q chrony 1>/dev/null); then
if [[ -f /etc/chrony.conf ]]; then
local res=$(egrep "^(server|pool)" /etc/chrony.conf)
if [[ -n $res ]]; then
echo -e "\033[32m-[+] remote chrony server is configured \033[0m"
timeSyncServerIfConfigured="True"
else
echo -e "\033[31m-[-] remote chrony server is not configured \033[0m"
timeSyncServerIfConfigured="False"
fi
fi
fi
fi
# 2.1.2 x-window
local res=$(rpm -qa xorg-x11*)
if [[ -z $res ]]; then
echo -e "\033[32m-[+] x11-windows is not installed \033[0m"
x11windowIfNotInstalled="True"
else
echo -e "\033[31m-[-] x11-windows is installed \033[0m"
x11windowIfNotInstalled="False"
fi
service_check_res={\"timeSyncServerIfConfigured\":\"$timeSyncServerIfConfigured\",\"x11windowIfNotInstalled\":\"$x11windowIfNotInstalled\"}
}
function network_check {
# 3. network configuration
echo [·] check network configuration
# 3.1 hosts file configuration
# 3.1.1 check /etc/hosts.deny file
if [[ -f /etc/hosts.deny ]]; then
hostsDenyFileIfExist="True"
echo -e "\033[32m-[+] file /etc/hosts.deny exists \033[0m"
local res=$(stat /etc/hosts.deny |while read x;do if [[ $x =~ "Uid" ]] && [[ $x =~ "(" ]]; then echo $x;fi;done|cut -d"(" -f2,3,4)
hostsDenyFilePermission=$(echo $res|cut -d"/" -f1)
if [[ $(echo $res|cut -d"/" -f1) = "0644" ]];then
echo -e "\033[32m-[+] file /etc/hosts.deny permission is 0644 \033[0m"
else
echo -e "\033[31m-[-] file /etc/hosts.deny permission is not 0644 \033[0m"
fi
local res=$(egrep "^[^#].+" /etc/hosts.deny)
if [[ -n $res ]]; then
hostsDenyFileIfConfigured="True"
echo -e "\033[32m-[+] file /etc/hosts.deny is configured \033[0m"
else
hostsDenyFileIfConfigured="False"
echo -e "\033[31m-[-] file /etc/hosts.deny is not configured \033[0m"
fi
else
hostsDenyFileIfExist="False"
echo -e "\033[31m-[-] file /etc/hosts.deny does not exists \033[0m"
fi
# 3.1.2 check /etc/hosts.allow file
if [[ -f /etc/hosts.allow ]]; then
hostsAllowFileIfExist="True"
echo -e "\033[32m-[+] file /etc/hosts.allow exists \033[0m"
local res=`stat /etc/hosts.allow |while read x;do if [[ $x =~ "Uid" ]] && [[ $x =~ "(" ]]; then echo $x;fi;done|cut -d"(" -f2,3,4`
hostsAllowFilePermission=$(echo $res|cut -d"/" -f1)
if [[ $(echo $res|cut -d"/" -f1) = "0644" ]];then
echo -e "\033[32m-[+] file /etc/hosts.allow permission is 0644 \033[0m"
else
echo -e "\033[31m-[-] file /etc/hosts.allow permission is not 0644 \033[0m"
fi
local res=$(egrep "^[^#].+" /etc/hosts.deny)
if [[ -n $res ]]; then
hostsAllowFileIfConfigured="True"
echo -e "\033[32m-[+] file /etc/hosts.allow is configured \033[0m"
else
hostsAllowFileIfConfigured="False"
echo -e "\033[31m-[-] file /etc/hosts.allow is not configured \033[0m"
fi
else
hostsAllowFileIfExist="False"
echo -e "\033[31m-[-] file /etc/hosts.allow does not exists \033[0m"
fi
# 3.2 firewall configuration
# 3.2.1 ensure iptables is installed
if $(rpm -q iptables 1>/dev/null); then
iptablesIfInstalled="True"
echo -e "\033[32m-[+] iptables is installed \033[0m"
# 3.2.2 ensure INPUT OUTPUT chain policy is DROP
#iptables -L|grep policy|while read x;do
while read x;do
if [[ $x =~ "INPUT" ]] && [[ $x =~ "DROP" ]]; then
iptablesInputPolicyIfDrop="True"
echo -e "\033[32m-[+] INPUT chain policy is DROP \033[0m"
elif [[ $x =~ "INPUT" ]] && [[ ! $x =~ "DROP" ]]; then
iptablesInputPolicyIfDrop="False"
echo -e "\033[31m-[-] INPUT chain policy is not DROP \033[0m"
fi
if [[ $x =~ "OUTPUT" ]] && [[ $x =~ "DROP" ]]; then
iptablesOutputPolicyIfDrop="True"
echo -e "\033[32m-[+] OUTPUT chain policy is DROP \033[0m"
elif [[ $x =~ "OUTPUT" ]] && [[ ! $x =~ "DROP" ]]; then
iptablesOutputPolicyIfDrop="False"
echo -e "\033[31m-[-] OUTPUT chain policy is not DROP \033[0m"
fi
done < <(iptables -L|grep policy)
else
iptablesIfInstalled="False"
echo -e "\033[31m-[-] iptables is not installed \033[0m"
fi
network_check_res={\"hostsAllowFileIfExist\":\"$hostsAllowFileIfExist\",\"hostsAllowFilePermission\":\"$hostsAllowFilePermission\",\"hostsAllowFileIfConfigured\":\"$hostsAllowFileIfConfigured\",\"hostsDenyFileIfExist\":\"$hostsDenyFileIfExist\",\"hostsDenyFilePermission\":\"$hostsDenyFilePermission\",\"hostsDenyFileIfConfigured\":\"$hostsDenyFileIfConfigured\",\"iptablesIfInstalled\":\"$iptablesIfInstalled\",\"iptablesInputPolicyIfDrop\":\"$iptablesInputPolicyIfDrop\",\"iptablesOutputPolicyIfDrop\":\"$iptablesOutputPolicyIfDrop\"}
}
function auditd_check {
# 4. auditd configuration
echo [·] check auditd configuration
# 4.1 ensure auditd is enabled
echo "-[·] check auditd if is enabled"
if [[ $(systemctl is-enabled auditd) = "enabled" ]]; then
echo -e "\033[32m-[+] auditd is enabled \033[0m"
auditdIfEnabled="True"
else
auditdIfEnabled="False"
echo -e "\033[31m-[-] auditd is not enabled \033[0m"
fi
# 4.2 some settings in /etc/audit/auditd.conf
echo "-[·] settings in /etc/audit/auditd.conf"
if [[ -f /etc/audit/auditd.conf ]]; then
auditdconfIfExist="True"
maxLogFile=$(grep "^max_log_file[[:blank:]]=" /etc/audit/auditd.conf|sed "s/ //g"|cut -d"=" -f 2)
maxLogFileAction=$(grep "^max_log_file_action" /etc/audit/auditd.conf|sed "s/ //g"|cut -d"=" -f 2)
spaceLeftAction=$(grep "^space_left_action" /etc/audit/auditd.conf|sed "s/ //g"|cut -d"=" -f 2)
numLogs=$(grep "^num_logs" /etc/audit/auditd.conf|sed "s/ //g"|cut -d"=" -f 2)
if [[ -n $maxLogFile ]]; then
auditdIfSetMaxLogFile=$maxLogFile
echo -e "\033[32m-[+] max_log_file size is ${maxLogFile} M \033[0m"
else
auditdIfSetMaxLogFile="False"
echo -e "\033[31m-[-] max_log_file size is not setted \033[0m"
fi
if [[ -n $maxLogFileAction ]]; then
auditdIfSetMaxLogFileAction="$maxLogFileAction"
echo -e "\033[32m-[+] max_log_file_action is ${maxLogFileAction}\033[0m"
else
auditdIfSetMaxLogFileAction="False"
echo -e "\033[31m-[-] max_log_file_action is not setted \033[0m"
fi
if [[ -n $spaceLeftAction ]]; then
auditdIfSetSpaceLeftAction="$spaceLeftAction"
echo -e "\033[32m-[+] space_left_action is ${spaceLeftAction}\033[0m"
else
auditdIfSetSpaceLeftAction="False"
echo -e "\033[31m-[-] space_left_action is not setted \033[0m"
fi
if [[ -n $numLogs ]]; then
auditdIfSetNumLogs="$numLogs"
echo -e "\033[32m-[+] the num of logs is ${numLogs} \033[0m"
else
auditdIfSetNumLogs="False"
echo -e "\033[31m-[-] num_logs is not setted \033[0m"
fi
else
auditdconfIfExist="False"
fi
auditd_config_info={\"auditdIfEnabled\":\"$auditdIfEnabled\",\"auditdconfIfExist\":\"$auditdconfIfExist\",\"auditdIfSetMaxLogFile\":\"$auditdIfSetMaxLogFile\",\"auditdIfSetMaxLogFileAction\":\"$auditdIfSetMaxLogFileAction\",\"auditdIfSetSpaceLeftAction\":\"$auditdIfSetSpaceLeftAction\",\"auditdIfSetNumLogs\":\"$auditdIfSetNumLogs\"}
#echo $auditd_config_info
# 4.3 rules in /etc/audit/audit.rules
# arch 64
echo "-[·] time-change"
if [[ -f /etc/audit/audit.rules ]]; then
auditdRulesIfExist="True"
echo -e "\033[32m-[+] /etc/audit/audit.rules is exist \033[0m"
if [[ ! -n $(grep time /etc/audit/audit.rules) ]]; then
auditdRulesIfNotNull="False"
echo -e "\033[31m-[-] not set rule about audit the change of date and time \033[0m"
else
auditdRulesIfNotNull="True"
# 4.3.1 time-change
local timeChangeList=$(egrep "(stime|clock_settime|adjtimex|settimeofday|/etc/localtime)" /etc/audit/audit.rules|wc -l)
if [[ ${timeChangeList} -gt 3 ]]; then
auditdIfCheckTimechange="True"
echo -e "\033[32m-[+] audith the change of date and time \033[0m"
elif [[ ${timeChangeList} -gt 1 ]]; then
auditdIfCheckTimechange="False"
echo -e "\033[31m-[-] not fully set rule about audit the change of date and time \033[0m"
else
auditdIfCheckTimechange="False"
echo -e "\033[31m-[-] not set rule about audit the change of date and time \033[0m"
fi
# 4.3.2 user and group change
echo "-[·] user and group change"
local keyArray=("/etc/passwd" "/etc/group" "/etc/gshadow" "/etc/shadow" "/etc/security/opasswd")
tmpArray1=()
tmpArray2=()
for i in ${keyArray[@]} ; do
if [[ -n $(grep $i /etc/audit/audit.rules) ]]; then
tmpArray1+=($i\;)
echo -e "\033[32m-[+] audit the change of $i \033[0m"
else
tmpArray2+=($i\;)
echo -e "\033[31m-[-] not audit the change of $i \033[0m"
fi
done
auditdRulesCheckedUserandgroupfile=$(echo ${tmpArray1[@]}|sed 's/ //g')
auditdRulesNotCheckedUserandgroupfile=$(echo ${tmpArray2[@]}|sed 's/ //g')
# 4.3.3 system's network environment change
echo "-[·] system's network environment change"
local keyArray=("/etc/issue" "/etc/issue.net" "/etc/hosts" "/etc/sysconfig/network" "/etc/sysconfig/network-scripts/" )
tmpArray1=()
tmpArray2=()
for i in ${keyArray[@]} ; do
if [[ -n $(grep $i /etc/audit/audit.rules) ]]; then
tmpArray1+=($i\;)
echo -e "\033[32m-[+] audit the change of $i \033[0m"
else
tmpArray2+=($i\;)
echo -e "\033[31m-[-] not audit the change of $i \033[0m"
fi
done
local keyArray=("sethostname" "setdomainname")
for i in ${keyArray[@]} ; do
if [[ -n $(grep $i /etc/audit/audit.rules) ]]; then
tmpArray1+=($i\;)
echo -e "\033[32m-[+] audit the use of syscall $i \033[0m"
else
echo -e "\033[31m-[-] not audit the use of syscall $i \033[0m"
tmpArray2+=($i\;)
fi
done
auditdRulesCheckedNetworkenv=$(echo ${tmpArray1[@]}|sed 's/ //g')
auditdRulesNotCheckedNetworkenv=$(echo ${tmpArray2[@]}|sed 's/ //g')
# 4.3.4 system's Mandatory Access Controls change
echo "-[·] system's Mandatory Access Controls change"
local keyArray=("/etc/selinux" "/usr/share/selinux")
tmpArray1=()
tmpArray2=()
for i in ${keyArray[@]} ; do
if [[ -n $(grep $i /etc/audit/audit.rules) ]]; then
tmpArray1+=($i\;)
echo -e "\033[32m-[+] audit the change of $i \033[0m"
else
tmpArray2+=($i\;)
echo -e "\033[31m-[-] not audit the change of $i \033[0m"
fi
done
auditdRulesCheckedMACchange=$(echo ${tmpArray1[@]}|sed 's/ //g')
auditdRulesNotCheckedMACchange=$(echo ${tmpArray2[@]}|sed 's/ //g')
# 4.3.5 audit events of login and logout
echo "-[·] audit events of login and logout"
local keyArray=("/var/log/lastlog" "/var/run/faillock/")
tmpArray1=()
tmpArray2=()
for i in ${keyArray[@]} ; do
if [[ -n $(grep $i /etc/audit/audit.rules) ]]; then
tmpArray1+=($i\;)
echo -e "\033[32m-[+] audit the change of $i \033[0m"
else
tmpArray2+=($i\;)
echo -e "\033[31m-[-] not audit the change of $i \033[0m"
fi
done
auditdRulesCheckedLoginoutEvents=$(echo ${tmpArray1[@]}|sed 's/ //g')
auditdRulesNotCheckedLoginoutEvents=$(echo ${tmpArray2[@]}|sed 's/ //g')
# 4.3.6 audit the change of discretionary access control
echo "-[·] audit the change of discretionary access control"
local keyArray=("(chmod|fchmod|fchmodat)" "(chown|fchown|fchownat)" "(setxattr|lsetxattr|removexattr)" "(lock|time)")
tmpArray1=()
tmpArray2=()
for i in ${keyArray[@]} ; do
if [[ -n $(egrep $i /etc/audit/audit.rules) ]]; then
i=$(echo $i|sed 's/|/ /g'|sed 's/(//g'|sed 's/)//g')
echo -e "\033[32m-[+] audit the use of systemcall $i \033[0m"
tmpArray1+=($i\;)
else
tmpArray2+=($i\;)
i=$(echo $i|sed 's/|/ /g'|sed 's/(//g'|sed 's/)//g')
echo -e "\033[31m-[-] not audit the use of systemcall $i \033[0m"
fi
done
auditdRulesCheckedDACChangeSyscall=$(echo ${tmpArray1[@]}|sed 's/ //g')
auditdRulesNotCheckedDACChangeSyscall=$(echo ${tmpArray2[@]}|sed 's/ //g')
# 4.3.7 audit the events of unsuccessful unauthorized file access attempts
echo "-[·] audit the events of unsuccessful unauthorized file access attempts"
local keyArray=("(create|open|openat|truncate|ftruncate).*?exit=-EACCESS" "(create|open|openat|truncate|ftruncate).*?exit=-EPERM" )
tmpArray1=()
tmpArray2=()
for i in ${keyArray[@]} ; do
if [[ -n $(egrep $i /etc/audit/audit.rules) ]]; then
tmpArray1+=($i\;)
i=$(echo $i|sed 's/|/ /g'|sed 's/(//g'|sed 's/)//g'|sed 's/\.\*?/ /g')
echo -e "\033[32m-[+] audit the use of systemcall $i \033[0m"
else
tmpArray2+=($i\;)
i=$(echo $i|sed 's/|/ /g'|sed 's/(//g'|sed 's/)//g'|sed 's/\.\*?/ /g')
echo -e "\033[31m-[-] not audit the use of systemcall $i \033[0m"
fi
done
auditdRulesCheckedFileAccessAttemptSyscall=$(echo ${tmpArray1[@]}|sed 's/ //g')
auditdRulesNotCheckedFileAccessAttemptSyscall=$(echo ${tmpArray2[@]}|sed 's/ //g')
# 4.3.8 audit the use of privileged commands
echo "-[·] audit the use of privileged commands"
#find / -name "passwd"
local res=$(find / -xdev \( -perm -4000 -o -perm -2000 \) -type f) #|awk '{print "-a always,exit -F path="$1"-F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged"}'
tmpArray1=()
tmpArray2=()
for i in ${res[@]} ; do
if [[ -n $(egrep $i /etc/audit/audit.rules) ]]; then
tmpArray1+=($i\;)
i=$(echo $i|sed 's/|/ /g'|sed 's/(//g'|sed 's/)//g'|sed 's/\.\*?/ /g')
echo -e "\033[32m-[+] audit the use of command $i \033[0m"
else
tmpArray2+=($i\;)
i=$(echo $i|sed 's/|/ /g'|sed 's/(//g'|sed 's/)//g'|sed 's/\.\*?/ /g')
echo -e "\033[31m-[-] not audit the use of command $i \033[0m"
fi
done
auditdRulesCheckedPrivilegedCommand=$(echo ${tmpArray1[@]}|sed 's/ //g')
auditdRulesNotCheckedPrivilegedCommand=$(echo ${tmpArray2[@]}|sed 's/ //g')
# 4.3.9 audit the change of file sudoer
echo "-[·] audit the change of file sudoer"
local keyArray=("/etc/sudoers" "/etc/sudoers.d/")
tmpArray1=()
tmpArray2=()
for i in ${keyArray[@]} ; do
if [[ -n $(egrep $i /etc/audit/audit.rules) ]]; then
tmpArray1+=($i\;)
i=$(echo $i|sed 's/|/ /g'|sed 's/(//g'|sed 's/)//g'|sed 's/\.\*?/ /g')
echo -e "\033[32m-[+] audit the change of file $i \033[0m"
else
tmpArray2+=($i\;)
i=$(echo $i|sed 's/|/ /g'|sed 's/(//g'|sed 's/)//g'|sed 's/\.\*?/ /g')
echo -e "\033[31m-[-] not audit the change of file $i \033[0m"
fi
done
auditdRulesCheckedSudoerFile=$(echo ${tmpArray1[@]}|sed 's/ //g')
auditdRulesNotCheckedSudoerFile=$(echo ${tmpArray2[@]}|sed 's/ //g')
# 4.3.10 check the audit configuration is setted to immutable unless reboot the server
echo "-[·] check the audit configuration is setted to immutable unless reboot the server"
local res=$(grep "^\s*[^#]" /etc/audit/audit.rules|tail -1|egrep "-e.*?2")
if [[ -n $res ]]; then
auditdRulesIfImmutable="True"
echo -e "\033[32m-[+] auditd setted -e 2 \033[0m"
else
auditdRulesIfImmutable="False"
echo -e "\033[31m-[-] auditd not setted -e 2 \033[0m"
fi
fi
else
auditdRulesIfExist="False"
echo -e "\033[32m-[+] /etc/audit/audit.rules is not exist \033[0m"
fi
auditd_rules_info={\"auditdRulesIfExist\":\"$auditdRulesIfExist\",\"auditdRulesIfNotNull\":\"$auditdRulesIfNotNull\",\"auditdIfCheckTimechange\":\"$auditdIfCheckTimechange\",\"auditdRulesCheckedUserandgroupfile\":\"$auditdRulesCheckedUserandgroupfile\",\"auditdRulesNotCheckedUserandgroupfile\":\"$auditdRulesNotCheckedUserandgroupfile\",\"auditdRulesCheckedNetworkenv\":\"$auditdRulesCheckedNetworkenv\",\"auditdRulesNotCheckedNetworkenv\":\"$auditdRulesNotCheckedNetworkenv\",\"auditdRulesCheckedMACchange\":\"$auditdRulesCheckedMACchange\",\"auditdRulesNotCheckedMACchange\":\"$auditdRulesNotCheckedMACchange\",\"auditdRulesCheckedLoginoutEvents\":\"$auditdRulesCheckedLoginoutEvents\",\"auditdRulesNotCheckedLoginoutEvents\":\"$auditdRulesNotCheckedLoginoutEvents\",\"auditdRulesCheckedDACChangeSyscall\":\"$auditdRulesCheckedDACChangeSyscall\",\"auditdRulesNotCheckedDACChangeSyscall\":\"$auditdRulesNotCheckedDACChangeSyscall\",\"auditdRulesCheckedFileAccessAttemptSyscall\":\"$auditdRulesCheckedFileAccessAttemptSyscall\",\"auditdRulesNotCheckedFileAccessAttemptSyscall\":\"$auditdRulesNotCheckedFileAccessAttemptSyscall\",\"auditdRulesCheckedPrivilegedCommand\":\"$auditdRulesCheckedPrivilegedCommand\",\"auditdRulesNotCheckedPrivilegedCommand\":\"$auditdRulesNotCheckedPrivilegedCommand\",\"auditdRulesCheckedSudoerFile\":\"$auditdRulesCheckedSudoerFile\",\"auditdRulesNotCheckedSudoerFile\":\"$auditdRulesNotCheckedSudoerFile\",\"auditdRulesIfImmutable\":\"$auditdRulesIfImmutable\"}
auditd_check_res={\"auditd_config_info\":$auditd_config_info,\"auditd_rules_info\":$auditd_rules_info}
}
function log_check {
echo "[·] check log configuration"
# 5.1 ensure auditd is enabled
echo "-[·] check rsyslog if is enabled"
if [[ $(systemctl is-enabled rsyslog) = "enabled" ]]; then
rsyslogIfEnabled="True"
echo -e "\033[32m-[+] rsyslog is enabled \033[0m"
else
rsyslogIfEnabled="False"
echo -e "\033[31m-[-] rsyslog is not enabled \033[0m"
fi
log_check_res={\"rsyslogIfEnabled\":\"$rsyslogIfEnabled\"}
}
function authentication_check {
echo "[·] check cron ssh pam and env configuration"
# 6.1 cron configuration
echo "-[·] check cron configuration"
# 6.1.1 check cron service is enabled
echo "-[·] check crond if is enabled"
if [[ $(systemctl is-enabled crond) = "enabled" ]]; then
echo -e "\033[32m-[+] crond is enabled \033[0m"
crondIfEnabled="True"
else
crondIfEnabled="False"
echo -e "\033[31m-[-] crond is not enabled \033[0m"
fi
# 6.1.2 check cron's configuration file permission
echo "-[·] check cron's configuration file permission"
local keyArray=("/etc/crontab" "/etc/cron.hourly" "/etc/cron.daily" "/etc/cron.weekly" "/etc/cron.monthly" "/etc/cron.d")
crondConfigFilenameArray=$(echo ${keyArray[@]}|sed 's/ /;/g')
tmpArray=()
for i in ${keyArray[@]} ; do
local res=$(stat $i |while read x;do if [[ $x =~ "Uid" ]] && [[ $x =~ "(" ]]; then echo $x;fi;done|cut -d"(" -f2,3,4|cut -d"/" -f1)
tmpArray+=($res\;)
if [[ $res = "0600" ]] || [[ $res = "0700" ]]; then
echo -e "\033[32m-[+] file $i's permission is $res \033[0m"
else
echo -e "\033[31m-[-] file $i's permission is $res ,not 0600 or 0700 \033[0m"
fi
done
crondConfigFilePermissionArray=$(echo ${tmpArray[@]}|sed 's/ //g')
# 6.1.3 check cron.allow cron.deny permission and owner
echo "-[·] check cron.allow cron.deny configuration file permission"
local keyArray=("/etc/cron.allow" "/etc/cron.deny")
crondallowdenyFilenameArray=$(echo ${keyArray[@]}|sed 's/ /;/g')
tmpArray1=()
tmpArray2=()
tmpArray3=()
for i in ${keyArray[@]} ; do
if [[ ! -f $i ]]; then
tmpArray1+=("False;")
tmpArray2+=("False;")
tmpArray3+=("False;")
echo -e "\033[31m-[-] file $i not exist \033[0m"
continue
else
tmpArray1+=("True;")
fi
local res1=$(stat $i |while read x;do if [[ $x =~ "Uid" ]] && [[ $x =~ "(" ]]; then echo $x;fi;done|cut -d"(" -f2,3,4|cut -d"/" -f1)
tmpArray2+=($res1\;)
local res2=$(stat $i |while read x;do if [[ $x =~ "Uid" ]] && [[ $x =~ "(" ]]; then echo $x;fi;done|cut -d"(" -f3,4|sed 's/)//g'|cut -d" " -f3,6)
tmpArray3+=($res2\;)
if [[ $res1 = "0600" ]] || [[ $res1 = "0700" ]]; then
echo -e "\033[32m-[+] file $i's permission is $res \033[0m"
else
echo -e "\033[31m-[-] file $i's permission is $res ,not 0600 or 0700 \033[0m"
fi
if [[ $res2 = "root root" ]]; then
echo -e "\033[32m-[+] file $i's owner is $res2 \033[0m"
else
echo -e "\033[31m-[-] file $i's owner is not root \033[0m"
fi
done
crondallowdenyFileIfExistArray=$(echo ${tmpArray1[@]}|sed 's/ //g')
crondallowdenyFilePermissionArray=$(echo ${tmpArray2[@]}|sed 's/ //g')
crondallowdenyFileOwnerArray=$(echo ${tmpArray3[@]}|sed 's/; /;/g')
crond_config_info={\"crondIfEnabled\":\"$crondIfEnabled\",\"crondConfigFilenameArray\":\"$crondConfigFilenameArray\",\"crondConfigFilePermissionArray\":\"$crondConfigFilePermissionArray\",\"crondallowdenyFilenameArray\":\"$crondallowdenyFilenameArray\",\"crondallowdenyFileIfExistArray\":\"$crondallowdenyFileIfExistArray\",\"crondallowdenyFilePermissionArray\":\"$crondallowdenyFilePermissionArray\",\"crondallowdenyFileOwnerArray\":\"$crondallowdenyFileOwnerArray\"}
# 6.2 SSH configuration
echo "-[·] check ssh configuration"
if [[ $(systemctl is-enabled sshd) = "enabled" ]]; then
sshdIfEnabled="True"
# 6.2.1 /etc/ssh/sshd_config permission 0600
local file="/etc/ssh/sshd_config"
local res=$(stat $file |while read x;do if [[ $x =~ "Uid" ]] && [[ $x =~ "(" ]]; then echo $x;fi;done|cut -d"(" -f2,3,4|cut -d"/" -f1)
if [[ $res = "0600" ]]; then
sshdConfigFilePermission=$res
echo -e "\033[32m-[+] file $file's access permission is $res \033[0m"
else
sshdConfigFilePermission="False"
echo -e "\033[3-m-[-] file $file's access permission is $res \033[0m"
fi
# 6.2.2 check ssh x11 forwarding if is disabled
local res=$(grep "^X11Forwaring" /etc/ssh/sshd_config)
if [[ -n $(echo $res|grep no) ]]; then
sshdIfDisableX11forwarding="True"
echo -e "\033[32m-[+] X11Forwarding no \033[0m"
else
sshdIfDisableX11forwarding="False"
echo -e "\033[31m-[-] not set X11Forwarding no \033[0m"
fi
# 6.2.3 check ssh MaxAUTHTries if is 4
local res=$(grep "^MaxAuthTries" /etc/ssh/sshd_config)
if [[ -n $res ]]; then
sshdIfSetMaxAuthTries=$(echo $res|sed -r 's/([^1234567890]*)([[:digit:]]+)/\2/')
echo -e "\033[32m-[+] $res \033[0m"
else
sshdIfSetMaxAuthTries="False"
echo -e "\033[31m-[-] not set MaxAuthTries \033[0m"
fi
# 6.2.4 check ssh IgnoreRhosts if is enabled
local res=$(grep "^IgnoreRhosts" /etc/ssh/sshd_config)
if [[ -n $(echo $res|grep yes) ]]; then
sshdIfEnableIgnoreRhosts="True"
echo -e "\033[32m-[+] IgnoreRhosts yes \033[0m"
else
sshdIfEnableIgnoreRhosts="False"
echo -e "\033[31m-[-] not set IgnoreRhosts no\033[0m"
fi
# 6.2.5 check ssh HostbasedAuthentication if is disabled
local res=$(grep "^HostbasedAuthentication" /etc/ssh/sshd_config)
if [[ -n $(echo $res|grep no) ]]; then
sshdIfDisableHostbasedAuthentication="True"
echo -e "\033[32m-[+] HostbasedAuthentication no \033[0m"
else
sshdIfDisableHostbasedAuthentication="False"
echo -e "\033[31m-[-] not set HostbasedAuthentication no\033[0m"
fi
# 6.2.6 check ssh root login if is diabled
local res=$(grep "^PermitRootLogin" /etc/ssh/sshd_config)
if [[ -n $(echo $res|grep no) ]]; then
sshdIfDisablePermitRootLogin="True"
echo -e "\033[32m-[+] PermitRootLogin no \033[0m"
else
sshdIfDisablePermitRootLogin="False"
echo -e "\033[31m-[-] not set PermitRootLogin no\033[0m"
fi
# 6.2.7 check ssh PermitEmptyPasswords if is diabled
local res=$(grep "^PermitEmptyPasswords" /etc/ssh/sshd_config)
if [[ -n $(echo $res|grep no) ]]; then
sshdIfDisablePermitEmptyPasswords="True"
echo -e "\033[32m-[+] PermitEmptyPasswords no \033[0m"
else
sshdIfDisablePermitEmptyPasswords="False"
echo -e "\033[31m-[-] not set PermitEmptyPasswords no\033[0m"
fi
# 6.2.8 check ssh PermitUserEnvironment if is diabled
local res=$(grep "^PermitUserEnvironment" /etc/ssh/sshd_config)
if [[ -n $(echo $res|grep no) ]]; then
sshdIfDisablePermitUserEnvironment="True"
echo -e "\033[32m-[+] PermitUserEnvironment no \033[0m"
else
sshdIfDisablePermitUserEnvironment="False"
echo -e "\033[31m-[-] not set PermitUserEnvironment no\033[0m"
fi
# 6.2.9 check if set specific MAC algorithms
local res=$(grep "^MACs" /etc/ssh/sshd_config)
if [[ -n $res ]]; then
sshdIfSpecificMACs="True"
echo -e "\033[32m-[+] will use specific MAC algorithms $res \033[0m"
else
sshdIfSpecificMACs="False"
echo -e "\033[31m-[-] not set specific MAC algorithms\033[0m"
fi
# 6.2.10 check SSH idle Timeout Interval if is configured
local res=$(grep "^ClientAliveInterval" /etc/ssh/sshd_config)
if [[ -n $res ]]; then
sshdIfSetClientAliveInterval=$(echo $res|sed -r 's/([^1234567890]*)([[:digit:]]+)/\2/')
echo -e "\033[32m-[+] $res \033[0m"
else
sshdIfSetClientAliveInterval="False"
echo -e "\033[31m-[-] not set ClientAliveInterval \033[0m"
fi
# 6.2.11 check SSH LoginGrace Time
local res=$(grep "^LoginGraceTime" /etc/ssh/sshd_config)
if [[ -n $res ]]; then
sshdIfSetLoginGraceTime=$(echo $res|sed -r 's/([^1234567890]*)([[:digit:]]+)/\2/')
echo -e "\033[32m-[+] $res \033[0m"
else
sshdIfSetLoginGraceTime="False"
echo -e "\033[31m-[-] not set LoginGraceTime \033[0m"
fi
else
sshdIfEnabled="False"
echo -e "\033[32m-[+] sshd is not enabled \033[0m"
fi
sshd_config_info={\"sshdIfEnabled\":\"$sshdIfEnabled\",\"sshdConfigFilePermission\":\"$sshdConfigFilePermission\",\"sshdIfDisableX11forwarding\":\"$sshdIfDisableX11forwarding\",\"sshdIfSetMaxAuthTries\":\"$sshdIfSetMaxAuthTries\",\"sshdIfEnableIgnoreRhosts\":\"$sshdIfEnableIgnoreRhosts\",\"sshdIfDisableHostbasedAuthentication\":\"$sshdIfDisableHostbasedAuthentication\",\"sshdIfDisablePermitRootLogin\":\"$sshdIfDisablePermitRootLogin\",\"sshdIfDisablePermitEmptyPasswords\":\"$sshdIfDisablePermitEmptyPasswords\",\"sshdIfDisablePermitUserEnvironment\":\"$sshdIfDisablePermitUserEnvironment\",\"sshdIfSpecificMACs\":\"$sshdIfSpecificMACs\",\"sshdIfSetClientAliveInterval\":\"$sshdIfSetClientAliveInterval\",\"sshdIfSetLoginGraceTime\":\"$sshdIfSetLoginGraceTime\"}
# 6.3 PAM configuration
echo "-[·] check pam configuration"
# 6.3.1 password creation policy
if [[ -f /etc/security/pwquality.conf ]]; then
pamPwqualityconfIfExist="True"
local minlen=$(grep ^minlen /etc/security/pwquality.conf | sed 's/ //g')
local minclass=$(grep ^minclass /etc/security/pwquality.conf |sed 's/ //g')
if [[ -n $minlen ]]; then
pamIfSetMinlen=$(echo $minlen|cut -d= -f2)
echo -e "\033[32m-[+] minimime length of password is $(echo $minlen|cut -d= -f2) \033[0m"
else
pamIfSetMinlen="False"
echo -e "\033[31m-[-] not set minlen \033[0m"
fi
if [[ -n $minclass ]]; then
pamIfSetMinclass=$(echo $minclass|cut -d= -f2)
echo -e "\033[32m-[+] minclass of password is $(echo $minclass|cut -d= -f2) \033[0m"
else
local keyArray=("^dcredit" "^lcredit" "^ocredit" "^ucredit")
local tmpCount=0
for i in ${keyArray[@]}; do
if [[ -n $(grep $i /etc/security/pwquality.conf) ]]; then
tmpCount=$(expr 1 + $tmpCount)
fi
done
if [[ $tmpCount = 0 ]]; then
pamIfSetMinclass="False"
else
pamIfSetMinclass=$tmpCount
fi
if [[ tmpCount -ge 2 ]]; then
echo -e "\033[32m-[+] minclass of passwd is $tmpCount \033[0m"
else
echo -e "\033[31m-[-] not set minclass \033[0m"
fi
fi
else
pamPwqualityconfIfExist="False"
fi
# 6.3.2 lock account and unlock time
local files=("/etc/pam.d/password-auth" "/etc/pam.d/system-auth")
local keyArray=("pam_faillock\.so.*?unlock_time")
tmpArray1=()
tmpArray2=()
for i in ${files[@]}; do
for k in ${keyArray[@]}; do
if [[ -n $(egrep $k $i ) ]]; then
echo -e "\033[32m-[+] set lock and unlock_time in $i \033[0m"
tmpArray1+=($i\;)
else
tmpArray2+=($i\;)
echo -e "\033[31m-[-] not set lock and unlock_time in $i \033[0m"
fi
done
done
sshdSetedLockAndUnlockTimeFiles=$(echo ${tmpArray1[@]}|sed 's/; /;/g')
sshdNotSetedLockAndUnlockTimeFiles=$(echo ${tmpArray2[@]}|sed 's/; /;/g')
# 6.3.3 check password reuse if is limited
sshdPamdFileArray=$(echo ${files[@]}|sed 's/ /;/g')
tmpArray=()
for i in ${files[@]}; do
local res=$(egrep '^password\s+sufficient\s+pam_unix.so' $i)
if [[ -n $res ]] && [[ $res =~ "remember=" ]]; then
local tmp=$(echo $res|sed 's/.*\(remember=[[:digit:]]\).*/\1/g'|sed 's/ //g'|cut -d= -f2)
tmpArray+=($tmp\;)
echo -e "\033[32m-[+] password reuse limit is $tmp in $i \033[0m"
else
tmpArray+=("False;")
echo -e "\033[31m-[-] passowrd reuse limit not set in $i \033[0m"
fi
done
sshdPamdFileReuseLimitArray=$(echo ${tmpArray[@]}|sed 's/; /;/g')
# 6.3.4 check the algorithm of store password if is sha512
tmpArray=()
for i in ${files[@]}; do
local res=$(egrep '^password\s+sufficient\s+pam_unix.so' $i)
if [[ -n $res ]] && [[ $res =~ "sha512" ]]; then
tmpArray+=("True;")
echo -e "\033[32m-[+] password storage algorithm is set to sha512 in $i \033[0m"
else
tmpArray+=("False;")
echo -e "\033[31m-[-] password storage algorithm is not specific to sha512 in $i \033[0m"
fi
done
sshdPamdFileIfSetSha512Array=$(echo ${tmpArray[@]}|sed 's/; /;/g')
pam_config_info={\"pamPwqualityconfIfExist\":\"$pamPwqualityconfIfExist\",\"pamIfSetMinlen\":\"$pamIfSetMinlen\",\"pamIfSetMinclass\":\"$pamIfSetMinclass\",\"sshdSetedLockAndUnlockTimeFiles\":\"$sshdSetedLockAndUnlockTimeFiles\",\"sshdNotSetedLockAndUnlockTimeFiles\":\"$sshdNotSetedLockAndUnlockTimeFiles\",\"sshdPamdFileArray\":\"$sshdPamdFileArray\",\"sshdPamdFileReuseLimitArray\":\"$sshdPamdFileReuseLimitArray\",\"sshdPamdFileIfSetSha512Array\":\"$sshdPamdFileIfSetSha512Array\"}
# 6.4 user accounts and environment
echo "-[·] check user accounts and environment"
if [[ -f /etc/login.defs ]]; then
accountLogindefsIfExist="True"
# 6.4.1 basic settings
local file='/etc/login.defs'
passMaxDays=$(grep ^PASS_MAX_DAYS $file|sed -r 's/[^1234567890]*([1234567890]{1,})/\1/g')
passMinDays=$(grep ^PASS_MIN_DAYS $file|sed -r 's/[^1234567890]*([1234567890]{1,})/\1/g')
passWarnAge=$(grep ^PASS_WARN_DAYS $file|sed -r 's/[^1234567890]*([1234567890]{1,})/\1/g')
inactive=$(useradd -D|grep INACTIVE|sed 's/ //g'|cut -d= -f2)
accountPassMaxDays=$passMaxDays
accountPassMinDays=$passMinDays
accountPassWarnDays=$passWarnAge
accountPassAutolockInactiveDays=$inactive
if [[ $passMaxDays -le 90 ]]; then
echo -e "\033[32m-[+] the maximume days of password have to change is $passMaxDays \033[0m"
else
echo -e "\033[31m-[-] the maximume days of password have to change is $passMaxDays ,should less than 90 day\033[0m"
fi
if [[ $passMinDays -ge 7 ]]; then
echo -e "\033[32m-[+] the minimume days of password have to change is $passMinDays \033[0m"
else
echo -e "\033[31m-[-] the minimume days of password have to change is $passMinDays ,should great than 7 day\033[0m"
fi
if [[ $passWarnAge -ge 7 ]]; then
echo -e "\033[32m-[+] the minimume days of warn password need to change is $passWarnAge \033[0m"
else
echo -e "\033[31m-[-] the minimume days of warn password need to change is $passWarnAge ,should greate than 7 day\033[0m"
fi
if [[ $inactive != -1 ]]; then
echo -e "\033[32m-[+] auto lock account when the $inactive day haven't login \033[0m"
else
echo -e "\033[31m-[-] haven't set day of auto lock accounts \033[0m"
fi
# 6.4.2 check system's account if is unlogin
local res=$(egrep -v "^\+" /etc/passwd | awk -F: '($1!="root" && $1!="sync" && $1!="shutdown" && $1!="halt" && $3<1000 && $7!="/sbin/nologin" && $7!="/bin/false") {print $1}')
tmpArray=()
if [[ -z $res ]]; then
tmpArray+=("False;")
echo -e "\033[32m-[+] system account can't login \033[0m"
else
tmpArray+=($(echo $res|sed 's/\n/ /g'))
echo -e "\033[31m-[-] ($(echo $res|sed 's/\n/ /g'))user's shell need set to /sbin/nologin \033[0m"
fi
accountShouldUnloginAray=$(echo ${tmpArray[@]}|sed 's/ /;/g')
# 6.4.3 check default group for the root account if is GID 0
local res=$(grep "^root:" /etc/passwd|cut -d: -f4)
accountGIDOfRoot=$res
if [[ $res = 0 ]]; then
echo -e "\033[32m-[+] default group for the root account is GID 0 \033[0m"
else
echo -e "\033[31m-[-]] default group for the root account is is GID $res,not GID 0 \033[0m"
fi
# 6.4.4 check default user shell timeout if is 900 seconds or less
local files=("/etc/bashrc" "/etc/profile")
tmpArray1=()
tmpArray2=()
for file in ${files[@]}; do
if [[ ! -f $file ]]; then
continue
else
tmpArray1+=($file\;)
fi
local res=$(grep "^TMOUT" $file|sed 's/ //g'|cut -d= -f2)
if [[ -z $res ]]; then
tmpArray2+=("False;")
echo -e "\033[31m-[-] not set TMOUT in file $file \033[0m"
continue
fi
tmpArray2+=($res\;)
if [[ $res -le 900 ]]; then
echo -e "\033[32m-[+] when idle time great than $res seconds will close connection \033[0m"
else
echo -e "\033[31m-[-] when idle time great than $res seconds will close connection,the time should less than 900 seconds \033[0m"
fi
done
accountProfileFileArray=$(echo ${tmpArray1[@]}|sed 's/; /;/g')
accountProfileTMOUTArray=$(echo ${tmpArray2[@]}|sed 's/; /;/g')
# 6.4.5 check access to su command if is restricted
local res=$(grep pam_wheel.so /etc/pam.d/su)
# accountIfSetUsersCanAccessSuCommand=
if [[ -n $res ]]; then
local res=$(grep wheel /etc/group|cut -d: -f4)
if [[ -n $res ]]; then
accountIfSetUsersCanAccessSuCommand=$(echo $res|sed 's/\n/;/g')
echo -e "\033[32m-[+] access to su command is specific to $(echo $res|sed 's/\n/;/g') \033[0m"
else
accountIfSetUsersCanAccessSuCommand="False"
echo -e "\033[31m-[-] access to su command is not restricted \033[0m"
fi
else
accountIfSetUsersCanAccessSuCommand="False"
echo -e "\033[31m-[-] access to su command is not restricted \033[0m"
fi
else
accountLogindefsIfExist="False"
echo -e "\033[31m-[-] file /etc/login.defs is not exist \033[0m"
fi
account_config_info={\"accountPassMaxDays\":\"$accountPassMaxDays\",\"accountPassMinDays\":\"$accountPassMinDays\",\"accountPassWarnDays\":\"$accountPassWarnDays\",\"accountPassAutolockInactiveDays\":\"$accountPassAutolockInactiveDays\",\"accountShouldUnloginArray\":\"$accountShouldUnloginArray\",\"accountGIDOfRoot\":\"$accountGIDOfRoot\",\"accountProfileFileArray\":\"$accountProfileFileArray\",\"accountProfileTMOUTArray\":\"$accountProfileTMOUTArray\",\"accountIfSetUsersCanAccessSuCommand\":\"$accountIfSetUsersCanAccessSuCommand\"}
authentication_check_res={\"crond_config_info\":$crond_config_info,\"sshd_config_info\":$sshd_config_info,\"pam_config_info\":$pam_config_info,\"account_config_info\":$account_config_info}
}
function system_check {
echo "[·] check permission of important file and configuration of user and group"
# 7.1 check permission of important file and uid gid
echo "-[·] check permission of important file"
local files=("/etc/passwd" "/etc/shadow" "/etc/group" "/etc/gshadow" "/etc/passwd-" "/etc/shadow-" "/etc/group-" "/etc/gshadow-")
importantFilenameArray=$(echo ${files[@]}|sed 's/ /;/g')
tmpArray1=()
tmpArray2=()
for file in ${files[@]}; do
local perm=$(stat $file |while read x;do if [[ $x =~ "Uid" ]] && [[ $x =~ "(" ]]; then echo $x;fi;done|cut -d"(" -f2,3,4|cut -d"/" -f1)
local uidGid=$(stat /etc/passwd |while read x;do if [[ $x =~ "Uid" ]] && [[ $x =~ "(" ]]; then echo $x;fi;done|cut -d"(" -f3,4|sed 's/ //g'|sed -r 's/([[:digit:]]{1,}).*([[:digit:]]{1,}).*/\1 \2/g'|cut -d" " -f1,2)
tmpArray1+=($perm\;)
tmpArray2+=($uidGid\;)
if [[ $file =~ "shadow" ]]; then
if [[ $perm = "0000" ]]; then
echo -e "\033[32m-[+] file $file's permission is $perm \033[0m"
else
echo -e "\033[31m-[-] file $file's permission is $perm,should set to 0000 \033[0m"
fi
else
if [[ $perm = "0644" ]]; then
echo -e "\033[32m-[+] file $file's permission is $perm \033[0m"
else
echo -e "\033[31m-[-] file $file's permission is $perm,should set to 0644 \033[0m"
fi
fi
if [[ $uidGid = "0 0" ]]; then
echo -e "\033[32m-[+] file $file's uid gid is $uidGid \033[0m"
else
echo -e "\033[31m-[-] file $file's uid gid is $uidGid,should set to 0 0 \033[0m"
fi
done
importantFilePermissionArray=$(echo ${tmpArray1[@]}|sed 's/; /;/g')
importantFileUidgidArray=$(echo ${tmpArray2[@]}|sed 's/; /;/g')
file_permission_info={\"importantFilenameArray\":\"$importantFilenameArray\",\"importantFilePermissionArray\":\"$importantFilePermissionArray\",\"importantFileUidgidArray\":\"$importantFileUidgidArray\"}
# 7.2 check configuration of user and group
echo "-[·] check configuration of user and group"
# 7.2.1 check if user's password is empty
users=$(cat /etc/shadow |awk -F: '($2=="!!"){print $1}'|while read x;do
res=$(grep ${x} /etc/passwd|cut -d: -f7)
if [[ $res != "/sbin/nologin" ]] && [[ $res != "/sbin/shutdown" ]] && [[ $res != "/sbin/halt" ]]; then
echo $x
#echo -e "\033[31m-[-] $x should have a passwd,not empty \033[0m";
fi;
done)
if [[ -z $users ]]; then
userIfSetPasswdOrArray="True"
echo -e "\033[32m-[+] all user account have set password \033[0m"
else
userIfSetPasswdOrArray=$(echo $users|sed 's/ /;/g')
echo -e "\033[31m-[-] user:$(echo $users|sed 's/\n/ /g') should set a password ,rather than empty \033[0m"
fi
# 7.2.2 check if root is the only UID 0 account
local users=$(cat /etc/passwd|awk -F: '($3==0){print $1}')
if [[ $users = 'root' ]]; then
uid0OnlyRootOrArray="True"
echo -e "\033[32m-[+] root is the only account that uid is 0 \033[0m"
else
uid0OnlyRootOrArray=$(echo $users|sed 's/root //g'|sed 's/ /;/g')
echo -e "\033[31m-[-] $(echo $users|sed 's/root //g'|sed 's/\n/ /g') uid should not be 0 \033[0m"
fi
# 7.2.3 check root PATH integrith
if [ "$(echo $PATH|grep ::)" != "" ]; then
echo -e "\033[31m-[-] Empty Directory in PATH (::) \033[0m"
fi
if [ "$(echo $PATH|grep :$)" != "" ]; then
echo -e "\033[31m-[-] Trailing : in PATH \033[0m"
fi
path=$( echo $PATH|sed -e 's/::/:/' -e 's/:$//' -e 's/:/ /g')
tmpArray1=()
tmpArray2=()
tmpArray3=()
tmpArray4=()
tmpArray5=()
set -- $path
while [[ $1 != "" ]]; do
if [[ $1 = "." ]]; then
echo -e "\033[31m-[-] PATH contains . \033[0m"
tmpArray1+=(".")
shift
continue
fi
if [[ -d $1 ]]; then
local dirperm=$(ls -ldH $1|cut -d" " -f1)
if [[ $(echo $dirperm|cut -c6) != "-" ]]; then
tmpArray2+=($1\;)
echo -e "\033[31m-[-] Group Write permission should not set on directory $1 \033[0m"
fi
if [[ $(echo $dirperm|cut -c9) != "-" ]]; then
tmpArray3+=($1\;)
echo -e "\033[31m-[-] Other Write permission should not set on directory $1 \033[0m"
fi
local dirown=$(ls -ldH $1|awk '{print $3}')
if [[ $dirown != "root" ]]; then
tmpArray4+=($1\;)
echo -e "\033[31m-[-] dir $1's owner is $dirown,should be root \033[0m"
fi
else
tmpArray5+=($1\;)
echo -e "\033[31m-[-] $1 is not a directory or not exist \033[0m"
fi
shift
done
if [[ ${#tmpArray1[@]} = 0 ]]; then
pathDirIfNotHasDot="True"
else
pathDirIfNotHasDot="False"
fi
pathDirPermissionHasGWArray=$(echo ${tmpArray2[@]}|sed 's/; /;/g')
pathDirPermissionHasOWArray=$(echo ${tmpArray3[@]}|sed 's/; /;/g')
pathDirOwnerIsNotRootArray=$(echo ${tmpArray4[@]}|sed 's/; /;/g')
pathDirDoesNotExistOrNotDirArray=$(echo ${tmpArray5[@]}|sed 's/; /;/g')
# 7.2.4 check if is all users' home directories exist
#cat /etc/passwd|egrep -v '^(root|halt|sync|shutdown)'|awk -F: '($7 != "/sbin/nologin" && $7 != "/bin/false"){print $1 " " $6}'|while read user dir; do
tmpArray1=()
tmpArray2=()
tmpArray3=()
tmpArray4=()
tmpArray5=()
tmpArray6=()
while read user dir; do
tmpArray1+=($dir\;)
if [[ ! -d $dir ]]; then
tmpArray2+=("False;")
tmpArray3+=("False;")