前言
由于没有相关自动化安全检查基线设备,为了方便自己工作,写了个shell脚本,批量登陆、执行、提取远程服务器数据。
脚本说明
1.将本目录所有文件都放入到一台自己的本地linux主机同一目录下
2.将服务器IP、普通账号、普通账号密码、root密码依次按以下格式写入到hosts.txt中(注意"~"作为hosts.txt的分隔符):
192.168.1.81~user~123456~nothing
192.168.1.10~user~123456~nothing
192.168.1.11~user~123456~nothing
3.执行sh login.sh,脚本将自动批量上传checklinux.sh到服务器/tmp目录下,并且自动执行和自动上传结果到本地linux主机上
4.最后将服务器上传的脚本和结果自动删除
(注意:本脚本适用于linux系统)
主脚本login.sh(用于批量调用put.exp、sh.exp、get.exp、del.exp无交互脚本)
#!/bin/bash
#version 2.0
#author by 網菔務卐
cat <<EOF
*************************************************************************************
*****使用说明: **
***** 1.由于安全方面root可能无法远程登陆,所以本程序是先登陆普通用户在su到root用户
最后使用root执行login.sh脚本实现无交互批量登陆 **
***** 2.使用普通用户上传须可对/tmp目录读写执行权限 **
***** 3.远程服务器执行检查脚本和输出结果都在/tmp目录下面 **
***** 4.远程服务器执行完脚本后将会上传到本地/tmp目录下 **
***** 5.远程服务器将会自动删除checklinux.sh和输出结果 **
*************************************************************************************
EOF
for i in `cat hosts.txt`
do
#远程IP地址
ipadd=`echo $i | awk -F "[~]" '{print $1}'`
#普通用户
username=`echo $i | awk -F "[~]" '{print $2}'`
#普通用户密码
userpasswd=`echo $i | awk -F "[~]" '{print $3}'`
#root用户密码
rootpasswd=`echo $i | awk -F "[~]" '{print $4}'`
#传checklinux
expect put.exp $ipadd $username $userpasswd
#登陆执行checklinux
expect sh.exp $ipadd $username $userpasswd $rootpasswd
#从远程拿取结果
expect get.exp $ipadd $username $userpasswd
#删除远程结果和脚本
expect del.exp $ipadd $username $userpasswd $rootpasswd
done
checklinux.sh安全检查脚本
#!/bin/bash
#version 2.0
#author by 網菔務卐
cat <<EOF
***** linux基线检查脚本 *****
***** linux基线配置规范设计 *****
***** 输出结果/tmp/${ipadd}_out.txt *****
EOF
echo "***************************"
echo "账号策略检查中..."
echo "***************************"
ipadd=ifconfig -a | grep Bcast | awk -F "[ :]+" '{print $4}'
passmax=cat /etc/login.defs | grep PASS_MAX_DAYS | grep -v ^# | awk '{print $2}'
passmin=cat /etc/login.defs | grep PASS_MIN_DAYS | grep -v ^# | awk '{print $2}'
passlen=cat /etc/login.defs | grep PASS_MIN_LEN | grep -v ^# | awk '{print $2}'
passage=cat /etc/login.defs | grep PASS_WARN_AGE | grep -v ^# | awk '{print $2}'
if [ $passmax -le 90 -a $passmax -gt 0];then
echo "口令生存周期为${passmax}天,符合要求" >> /tmp/${ipadd}_out.txt
else
echo "口令生存周期为${passmax}天,不符合要求,建议设置不大于90天" >> /tmp/${ipadd}_out.txt
fi
if [ $passmin -ge 6 ];then
echo "口令更改最小时间间隔为${passmin}天,符合要求" >> /tmp/${ipadd}_out.txt
else
echo "口令更改最小时间间隔为${passmin}天,不符合要求,建议设置大于等于6天" >> /tmp/${ipadd}_out.txt
fi
if [ $passlen -ge 8 ];then
echo "口令最小长度为${passlen},符合要求" >> /tmp/${ipadd}_out.txt
else
echo "口令最小长度为${passlen},不符合要求,建议设置最小长度大于等于8" >> /tmp/${ipadd}_out.txt
fi
if [ $passage -ge 30 -a $passage -lt $passmax ];then
echo "口令过期警告时间天数为${passage},符合要求" >> /tmp/${ipadd}_out.txt
else
echo "口令过期警告时间天数为${passage},不符合要求,建议设置大于等于30并小于口令生存周期" >> /tmp/${ipadd}_out.txt
fi
echo "***************************"
echo "账号是否会主动注销检查中..."
echo "***************************"
cat /etc/profile | grep TMOUT | awk -F[=] '{print $2}'
if [ $? -eq 0 ];then
TMOUT=cat /etc/profile | grep TMOUT | awk -F[=] '{print $2}'
if [ $TMOUT -le 600 -a $TMOUT -ge 10 ];then
echo "账号超时时间${TMOUT}秒,符合要求" >> /tmp/${ipadd}_out.txt
else
echo "账号超时时间${TMOUT}秒,不符合要求,建议设置小于600秒" >> /tmp/${ipadd}_out.txt
fi
else
echo "账号超时不存在自动注销,不符合要求,建议设置小于600秒" >> /tmp/${ipadd}_out.txt
fi
#grub和lilo密码是否设置检查
cat /etc/grub.conf | grep password 2> /dev/null
if [ $? -eq 0 ];then
echo "已设置grub密码,符合要求" >> /tmp/${ipadd}_out.txt
else
echo "没有设置grub密码,不符合要求,建议设置grub密码" >> /tmp/${ipadd}_out.txt
fi
cat /etc/lilo.conf | grep password 2> /dev/null
if [ $? -eq 0 ];then
echo "已设置lilo密码,符合要求" >> /tmp/${ipadd}_out.txt
else
echo "没有设置lilo密码,不符合要求,建议设置lilo密码" >> /tmp/${ipadd}_out.txt
fi
#查找非root账号UID为0的账号
UIDS=awk -F[:] 'NR!=1{print $3}' /etc/passwd
flag=0
for i in $UIDS
do
if [ $i = 0 ];then
echo "存在非root账号的账号UID为0,不符合要求" >> /tmp/${ipadd}_out.txt
else
flag=1
fi
done
if [ $flag = 1 ];then
echo "不存在非root账号的账号UID为0,符合要求" >> /tmp/${ipadd}_out.txt
fi
#检查umask设置
umask1=cat /etc/profile | grep umask | grep -v ^# | awk '{print $2}'
umask2=cat /etc/csh.cshrc | grep umask | grep -v ^# | awk '{print $2}'
umask3=cat /etc/bashrc | grep umask | grep -v ^# | awk 'NR!=1{print $2}'
flags=0
for i in $umask1
do
if [ $i = "027" ];then
echo "/etc/profile文件中所设置的umask为${i},符合要求" >> /tmp/${ipadd}_out.txt
else
flags=1
fi
done
if [ $flags = 1 ];then
echo "/etc/profile文件中所所设置的umask为${i},不符合要求,建议设置为027" >> /tmp/${ipadd}_out.txt
fi
flags=0
for i in $umask2
do
if [ $i = "027" ];then
echo "/etc/csh.cshrc文件中所设置的umask为${i},符合要求" >> /tmp/${ipadd}_out.txt
else
flags=1
fi
done
if [ $flags = 1 ];then
echo "/etc/csh.cshrc文件中所所设置的umask为${i},不符合要求,建议设置为027" >> /tmp/${ipadd}_out.txt
fi
flags=0
for i in $umask3
do
if [ $i = "027" ];then
echo "/etc/bashrc文件中所设置的umask为${i},符合要求" >> /tmp/${ipadd}_out.txt
else
flags=1
fi
done
if [ $flags = 1 ];then
echo "/etc/bashrc文件中所设置的umask为${i},不符合要求,建议设置为027" >> /tmp/${ipadd}_out.txt
fi
echo "***************************"
echo "检查重要文件权限中..."
echo "***************************"
file1=ls -l /etc/passwd | awk '{print $1}'
file2=ls -l /etc/shadow | awk '{print $1}'
file3=ls -l /etc/group | awk '{print $1}'
file4=ls -l /etc/securetty | awk '{print $1}'
file5=ls -l /etc/services | awk '{print $1}'
file6=ls -l /etc/xinetd.conf | awk '{print $1}'
file7=ls -l /etc/grub.conf | awk '{print $1}'
file8=ls -l /etc/lilo.conf | awk '{print $1}'
if [ $file1 = "-rw-r--r--" ];then
echo "/etc/passwd文件权限为644,符合要求" >> /tmp/${ipadd}_out.txt
else
echo "/etc/passwd文件权限不为644,不符合要求,建议设置权限为644" >> /tmp/${ipadd}_out.txt
fi
if [ $file2 = "-r--------" ];then
echo "/etc/shadow文件权限为400,符合要求" >> /tmp/${ipadd}_out.txt
else
echo "/etc/shadow文件权限不为400,不符合要求,建议设置权限为400" >> /tmp/${ipadd}_out.txt
fi
if [ $file3 = "-rw-r--r--" ];then
echo "/etc/group文件权限为644,符合要求" >> /tmp/${ipadd}_out.txt
else
echo "/etc/group文件权限不为644,不符合要求,建议设置权限为644" >> /tmp/${ipadd}_out.txt
fi
if [ $file4 = "-rw-------" ];then
echo "/etc/security文件权限为600,符合要求" >> /tmp/${ipadd}_out.txt
else
echo "/etc/security文件权限不为600,不符合要求,建议设置权限为600" >> /tmp/${ipadd}_out.txt
fi
if [ $file5 = "-rw-r--r--" ];then
echo "/etc/services文件权限为644,符合要求" >> /tmp/${ipadd}_out.txt
else
echo "/etc/services文件权限不为644,不符合要求,建议设置权限为644" >> /tmp/${ipadd}_out.txt
fi
if [ $file6 = "-rw-------" ];then
echo "/etc/xinetd.conf文件权限为600,符合要求" >> /tmp/${ipadd}_out.txt
else
echo "/etc/xinetd.conf文件权限不为600,不符合要求,建议设置权限为600" >> /tmp/${ipadd}_out.txt
fi
if [ $file7 = "-rw-------" ];then
echo "/etc/grub.conf文件权限为600,符合要求" >> /tmp/${ipadd}_out.txt
else
echo "/etc/grub.conf文件权限不为600,不符合要求,建议设置权限为600" >> /tmp/${ipadd}_out.txt
fi
if [ -f /etc/lilo.conf ];then
if [ $file8 = "-rw-------" ];then
echo "/etc/lilo.conf文件权限为600,符合要求" >> /tmp/${ipadd}_out.txt
else
echo "/etc/lilo.conf文件权限不为600,不符合要求,建议设置权限为600" >> /tmp/${ipadd}_out.txt
fi
else
echo "/etc/lilo.conf文件夹不存在"
fi
cat /etc/security/limits.conf | grep -V ^# | grep core
if [ $? -eq 0 ];then
soft=cat /etc/security/limits.conf | grep -V ^# | grep core | awk {print $2}
for i in $soft
do
if [ $i = "soft" ];then
echo "* soft core 0 已经设置" >> /tmp/${ipadd}_out.txt
fi
if [ $i = "hard" ];then
echo "* hard core 0 已经设置" >> /tmp/${ipadd}_out.txt
fi
done
else
echo "没有设置core,建议在/etc/security/limits.conf中添加* soft core 0和* hard core 0" >> /tmp/${ipadd}_out.txt
fi
echo "***************************"
echo "检查ssh配置文件中..."
echo "***************************"
cat /etc/ssh/sshd_config | grep -v ^# |grep "PermitRootLogin no"
if [ $? -eq 0 ];then
echo "已经设置远程root不能登陆,符合要求" >> /tmp/${ipadd}_out.txt
else
echo "不已经设置远程root不能登陆,不符合要求,建议/etc/ssh/sshd_config添加PermitRootLogin no" >> /tmp/${ipadd}_out.txt
fi
#检查telnet是否开启
telnetd=cat /etc/xinetd.d/telnet | grep disable | awk '{print $3}'
if [ $telnetd = "yes" ];then
echo "检测到telnet服务开启,不符合要求,建议关闭telnet" >> /tmp/${ipadd}_out.txt
fi
Protocol=cat /etc/ssh/sshd_config | grep -v ^# | grep Protocol | awk '{print $2}'
if [ $Protocol = 2 ];then
echo "openssh使用ssh2协议,符合要求" >> /tmp/${ipadd}_out.txt
fi
if [ $Protocol = 1 ];then
echo "openssh使用ssh1协议,不符合要求" >> /tmp/${ipadd}_out.txt
fi
#检查保留历时命令条数
HISTSIZE=cat /etc/profile|grep HISTSIZE|head -1|awk -F[=] '{print $2}'
if [ $HISTSIZE -eq 5 ];then
echo "保留历时命令条数为$HISTSIZE,符合要求" >> /tmp/${ipadd}_out.txt
else
echo "保留历时命令条数为$HISTSIZE,不符合要求,建议/etc/profile的HISTSIZE设置为5" >> /tmp/${ipadd}_out.txt
fi
#检查重要文件的属性
flag=0
for ((x=1;x<=15;x++))
do
apend=lsattr /etc/passwd | cut -c $x
if [ $apend = "i" ];then
echo "/etc/passwd文件存在i安全属性" >> /tmp/${ipadd}_out.txt
flag=1
fi
if [ $apend = "a" ];then
echo "/etc/passwd文件存在a安全属性" >> /tmp/${ipadd}_out.txt
flag=1
fi
done
if [ $flag = 0 ];then
echo "/etc/passwd文件不存在相关安全属性,建议使用chattr +i或chattr +a防止/etc/passwd被删除或修改" >> /tmp/${ipadd}_out.txt
fi
flag=0
for ((x=1;x<=15;x++))
do
apend=lsattr /etc/shadow | cut -c $x
if [ $apend = "i" ];then
echo "/etc/shadow文件存在i安全属性" >> /tmp/${ipadd}_out.txt
flag=1
fi
if [ $apend = "a" ];then
echo "/etc/shadow文件存在a安全属性" >> /tmp/${ipadd}_out.txt
flag=1
fi
done
if [ $flag = 0 ];then
echo "/etc/shadow文件不存在相关安全属性,建议使用chattr +i或chattr +a防止/etc/shadow被删除或修改" >> /tmp/${ipadd}_out.txt
fi
flag=0
for ((x=1;x<=15;x++))
do
apend=lsattr /etc/gshadow | cut -c $x
if [ $apend = "i" ];then
echo "/etc/gshadow文件存在i安全属性" >> /tmp/${ipadd}_out.txt
flag=1
fi
if [ $apend = "a" ];then
echo "/etc/gshadow文件存在a安全属性" >> /tmp/${ipadd}_out.txt
flag=1
fi
done
if [ $flag = 0 ];then
echo "/etc/gshadow文件不存在相关安全属性,建议使用chattr +i或chattr +a防止/etc/gshadow被删除或修改" >> /tmp/${ipadd}_out.txt
fi
flag=0
for ((x=1;x<=15;x++))
do
apend=lsattr /etc/group | cut -c $x
if [ $apend = "i" ];then
echo "/etc/group文件存在i安全属性" >> /tmp/${ipadd}_out.txt
flag=1
fi
if [ $apend = "a" ];then
echo "/etc/group文件存在a安全属性" >> /tmp/${ipadd}_out.txt
flag=1
fi
done
if [ $flag = 0 ];then
echo "/etc/group文件不存在相关安全属性,建议使用chattr +i或chattr +a防止/etc/group被删除或修改" >> /tmp/${ipadd}_out.txt
fi
#检查snmp默认团体口令public、private
if [ -f /etc/snmp/snmpd.conf ];then
public=cat /etc/snmp/snmpd.conf | grep public | grep -v ^# | awk '{print $4}'
private=cat /etc/snmp/snmpd.conf | grep private | grep -v ^# | awk '{print $4}'
if [ $public = "public" ];then
echo "发现snmp服务存在默认团体名public,不符合要求" >> /tmp/${ipadd}_out.txt
fi
if [[ $private = "private" ]];then
echo "发现snmp服务存在默认团体名private,不符合要求" >> /tmp/${ipadd}_out.txt
fi
else
echo "snmp服务配置文件不存在,可能没有运行snmp服务"
fi
#检查主机信任关系
rhosts=find / -name .rhosts
rhosts2=find / -name hosts.equiv
for i in $rhosts
do
if [ -f $i ];then
echo "找到信任主机关系,请查看${i}文件,请自行判断是否属于正常业务需求,建议删除信任IP" >> /tmp/${ipadd}_out.txt
fi
done
#检查日志审核功能是否开启
service auditd status
if [ $? = 0 ];then
echo "系统日志审核功能已开启,符合要求" >> /tmp/${ipadd}_out.txt
fi
if [ $? = 3 ];then
echo "系统日志审核功能已关闭,不符合要求,建议service auditd start开启" >> /tmp/${ipadd}_out.txt
fi
#检查磁盘动态空间,是否大于等于80%
space=df -h | awk -F "[ %]+" 'NR!=1{print $5}'
for i in $space
do
if [ $i -ge 80 ];then
echo "警告!磁盘存储容量大于80%,建议扩充磁盘容量或者删除垃圾文件" >> /tmp/${ipadd}_out.txt
fi
done
echo "***************************"
echo "*** 检查完毕 ***"
echo "***************************"
put.exp上传checklinux.sh脚本到远程服务器/tmp目录下
#!/usr/bin/expect
set ipadd [lindex $argv 0]
set username [lindex $argv 1]
set userpasswd [lindex $argv 2]
set timeout 10
spawn scp checklinux.sh $username@$ipadd:/tmp/
expect {
"yes/no" {send "yes\r";exp_continue}
"password" {send "$userpasswd\r"}
}
expect eof
sh.exp 批量远程登陆和执行,将结果放到/tmp目录下
#!/usr/bin/expect
set ipaddr [lindex $argv 0]
set username [lindex $argv 1]
set userpasswd [lindex $argv 2]
set rootpasswd [lindex $argv 3]
set timeout 10
spawn ssh $username@$ipaddr
expect {
"yse/no" {send "yes\r";exp_continue}
"*password*" {send "$userpasswd\r";exp_continue}
"*from*" {send "su - root\r"}
}
expect "Password"
send "$rootpasswd\r"
expect "*]#"
send "chmod 777 /tmp/checklinux.sh\r"
send "sh /tmp/checklinux.sh\r"
send "exit\r"
send "exit\r"
interact
get.exp批量获取远程结果放到本地/tmp目录
#!/usr/bin/expect
set ipadd [lindex $argv 0]
set username [lindex $argv 1]
set userpasswd [lindex $argv 2]
set timeout 10
spawn scp $username@$ipadd:/tmp/*${ipadd}* /tmp/
expect {
"password" {send "$userpasswd\r"}
}
expect eof
del.exp批量远程删除上传的脚本和结果
#!/usr/bin/expect
set ipadd [lindex $argv 0]
set username [lindex $argv 1]
set userpasswd [lindex $argv 2]
set rootpasswd [lindex $argv 3]
set timeout 10
spawn ssh $username@$ipadd
expect {
"password" {send "$userpasswd\r";exp_continue}
"*from*" {send "su - root\r";exp_continue}
"*assword*" {send "$rootpasswd\r";exp_continue}
"*]#" {send "rm -f /tmp/*${ipadd}*.txt /tmp/checklinux.sh\r"}
}
expect eof