【實(shí)用】HW前Linux安全基線檢查腳本
腳本功能:
檢測密碼設(shè)置策略的口令生存期是否符合規(guī)范
檢測密碼設(shè)置策略的口令更改最小間隔天數(shù)是否符合規(guī)范
檢測密碼設(shè)置策略的口令最小長度是否符合規(guī)范
檢測密碼設(shè)置策略的口令過期前警告天數(shù)是否符合規(guī)范
檢測是否設(shè)置帳號超時(shí)自動(dòng)注銷
檢測是否設(shè)置系統(tǒng)引導(dǎo)管理器密碼
檢測是否存在空口令賬號
檢查是否存在除root之外UID為0的用戶
檢查用戶umask設(shè)置是否符合規(guī)范
檢查重要目錄或文件權(quán)限是否符合規(guī)范
檢查系統(tǒng)core dump是否符合規(guī)范
檢測是否禁止root用戶遠(yuǎn)程登錄
檢查系統(tǒng)openssh安全配置,禁止使用協(xié)議1
檢測保留歷史命令的條數(shù)
檢測重要文件是否設(shè)置不可修改
檢測snmp團(tuán)體字設(shè)置不能使用默認(rèn)的團(tuán)體字
檢測是否關(guān)閉關(guān)閉系統(tǒng)信任主機(jī)
檢測是否日志審核配置
檢測系統(tǒng)磁盤分區(qū)是否有足夠的剩余空間
腳本代碼:
#! /bin/bash
#vesion 1.0
#author by (魔法劍客)
ipadd=`ifconfig -a | grep Bcast | awk -F "[ :]+" '{print $4}' | tr "\n" "_"`
cat <<EOF
*************************************************************************************
***** linux基線檢查腳本 *****
***** Author(魔法劍客) *****
*************************************************************************************
***** linux基線配置規(guī)范設(shè)計(jì) *****
***** 輸出結(jié)果"/tmp/${ipadd}_checkResult.txt" *****
*************************************************************************************
EOF
echo "IP: ${ipadd}" >> "/tmp/${ipadd}_checkResult.txt"
user_id=`whoami`
echo "當(dāng)前掃描用戶:${user_id}" >> "/tmp/${ipadd}_checkResult.txt"
scanner_time=`date '+%Y-%m-%d %H:%M:%S'`
echo "當(dāng)前掃描時(shí)間:${scanner_time}" >> "/tmp/${ipadd}_checkResult.txt"
echo "***************************"
echo "賬號策略檢查中..."
echo "***************************"
#編號:SBL-Linux-02-01-01
#項(xiàng)目:帳號與口令-用戶口令設(shè)置
#合格:Y;不合格:N
#不合格地方
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 $2}'`
echo "SBL-Linux-02-01-01:" >> "/tmp/${ipadd}_checkResult.txt"
if [ $passmax -le 90 -a $passmax -gt 0 ];then
echo "Y:口令生存周期為${passmax}天,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:口令生存周期為${passmax}天,不符合要求,建議設(shè)置不大于90天" >> "/tmp/${ipadd}_checkResult.txt"
fi
if [ $passmin -ge 6 ];then
echo "Y:口令更改最小時(shí)間間隔為${passmin}天,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:口令更改最小時(shí)間間隔為${passmin}天,不符合要求,建議設(shè)置大于等于6天" >> "/tmp/${ipadd}_checkResult.txt"
fi
if [ $passlen -ge 8 ];then
echo "Y:口令最小長度為${passlen},符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:口令最小長度為${passlen},不符合要求,建議設(shè)置最小長度大于等于8" >> "/tmp/${ipadd}_checkResult.txt"
fi
if [ $passage -ge 30 -a $passage -lt $passmax ];then
echo "Y:口令過期警告時(shí)間天數(shù)為${passage},符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:口令過期警告時(shí)間天數(shù)為${passage},不符合要求,建議設(shè)置大于等于30并小于口令生存周期" >> /"/tmp/${ipadd}_checkResult.txt"
fi
echo "***************************"
echo "賬號是否會主動(dòng)注銷檢查中..."
echo "***************************"
checkTimeout=$(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 $TMOUT -ge 10 ];then
echo "Y:賬號超時(shí)時(shí)間${TMOUT}秒,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:賬號超時(shí)時(shí)間${TMOUT}秒,不符合要求,建議設(shè)置小于600秒" >> "/tmp/${ipadd}_checkResult.txt"
fi
else
echo "N:賬號超時(shí)不存在自動(dòng)注銷,不符合要求,建議設(shè)置小于600秒" >> "/tmp/${ipadd}_checkResult.txt"
fi
#編號:SBL-Linux-02-01-02
#項(xiàng)目:帳號與口令-root用戶遠(yuǎn)程登錄限制
#合格:Y;不合格:N
#不合格地方
echo "***************************"
echo "檢查root用戶是否能遠(yuǎn)程登錄限制..."
echo "***************************"
echo "SBL-Linux-02-01-02:" >> "/tmp/${ipadd}_checkResult.txt"
remoteLogin=$(cat /etc/ssh/sshd_config | grep -v ^# |grep "PermitRootLogin no")
if [ $? -eq 0 ];then
echo "Y:已經(jīng)設(shè)置遠(yuǎn)程root不能登陸,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:已經(jīng)設(shè)置遠(yuǎn)程root能登陸,不符合要求,建議/etc/ssh/sshd_config添加PermitRootLogin no" >> "/tmp/${ipadd}_checkResult.txt"
fi
#編號:SBL-Linux-02-01-03
#項(xiàng)目:帳號與口令-檢查是否存在除root之外UID為0的用戶
#合格:Y;不合格:N
#不合格地方
#查找非root賬號UID為0的賬號
echo "SBL-Linux-02-01-03:" >> "/tmp/${ipadd}_checkResult.txt"
UIDS=`awk -F[:] 'NR!=1{print $3}' /etc/passwd`
flag=0
for i in $UIDS
do
if [ $i = 0 ];then
echo "N:存在非root賬號的賬號UID為0,不符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
flag=1
fi
done
if [ $flag = 1 ];then
echo "Y:不存在非root賬號的賬號UID為0,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
fi
#編號:SBL-Linux-02-01-04
#項(xiàng)目:帳號與口令-檢查telnet服務(wù)是否開啟
#合格:Y;不合格:N
#不合格地方
#檢查telnet是否開啟
echo "SBL-Linux-02-01-04:" >> "/tmp/${ipadd}_checkResult.txt"
telnetd=`cat /etc/xinetd.d/telnet | grep disable | awk '{print $3}'`
if [ "$telnetd"x = "yes"x ]; then
echo "N:檢測到telnet服務(wù)開啟,不符合要求,建議關(guān)閉telnet" >> "/tmp/${ipadd}_checkResult.txt"
fi
#編號:SBL-Linux-02-01-05
#項(xiàng)目:帳號與口令-root用戶環(huán)境變量的安全性
#合格:Y;不合格:N
#不合格地方
#檢查目錄權(quán)限是否為777
echo "SBL-Linux-02-01-05:" >> "/tmp/${ipadd}_checkResult.txt"
dirPri=$(find $(echo $PATH | tr ':' ' ') -type d \( -perm -0777 \) 2> /dev/null)
if [ -z "$dirPri" ]
then
echo "Y:目錄權(quán)限無777的,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:文件${dirPri}目錄權(quán)限為777的,不符合要求。" >> "/tmp/${ipadd}_checkResult.txt"
fi
#編號:SBL-Linux-02-01-06
#項(xiàng)目:帳號與口令-遠(yuǎn)程連接的安全性配置
#合格:Y;不合格:N
#不合格地方
echo "SBL-Linux-02-01-06:" >> "/tmp/${ipadd}_checkResult.txt"
fileNetrc=`find / -xdev -mount -name .netrc -print 2> /dev/null`
if [ -z "${fileNetrc}" ];then
echo "Y:不存在.netrc文件,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:存在.netrc文件,不符合要求" >> "/tmp/${ipadd}_checkResult.txt"
fi
fileRhosts=`find / -xdev -mount -name .rhosts -print 2> /dev/null`
if [ -z "$fileRhosts" ];then
echo "Y:不存在.rhosts文件,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:存在.rhosts文件,不符合要求" >> "/tmp/${ipadd}_checkResult.txt"
fi
#編號:SBL-Linux-02-01-07
#項(xiàng)目:帳號與口令-用戶的umask安全配置
#合格:Y;不合格:N
#不合格地方
#檢查umask設(shè)置
echo "SBL-Linux-02-01-07:" >> "/tmp/${ipadd}_checkResult.txt"
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 [ $i != "027" ];then
echo "N:/etc/profile文件中所所設(shè)置的umask為${i},不符合要求,建議設(shè)置為027" >> "/tmp/${ipadd}_checkResult.txt"
flags=1
break
fi
done
if [ $flags == 0 ];then
echo "Y:/etc/profile文件中所設(shè)置的umask為${i},符合要求" >> "/tmp/${ipadd}_checkResult.txt"
fi
flags=0
for i in $umask2
do
if [ $i != "027" ];then
echo "N:/etc/csh.cshrc文件中所所設(shè)置的umask為${i},不符合要求,建議設(shè)置為027" >> "/tmp/${ipadd}_checkResult.txt"
flags=1
break
fi
done
if [ $flags == 0 ];then
echo "Y:/etc/csh.cshrc文件中所設(shè)置的umask為${i},符合要求" >> "/tmp/${ipadd}_checkResult.txt"
fi
flags=0
for i in $umask3
do
if [ $i != "027" ];then
echo "N:/etc/bashrc文件中所設(shè)置的umask為${i},不符合要求,建議設(shè)置為027" >> "/tmp/${ipadd}_checkResult.txt"
flags=1
break
fi
done
if [ $flags == 0 ];then
echo "Y:/etc/bashrc文件中所設(shè)置的umask為${i},符合要求" >> "/tmp/${ipadd}_checkResult.txt"
fi
#編號:SBL-Linux-02-01-08
#項(xiàng)目:帳號與口令-grub和lilo密碼是否設(shè)置檢查
#合格:Y;不合格:N
#不合格地方
#grub和lilo密碼是否設(shè)置檢查
echo "SBL-Linux-02-01-08:" >> "/tmp/${ipadd}_checkResult.txt"
grubfile=$(cat /etc/grub.conf | grep password)
if [ $? -eq 0 ];then
echo "Y:已設(shè)置grub密碼,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:沒有設(shè)置grub密碼,不符合要求,建議設(shè)置grub密碼" >> "/tmp/${ipadd}_checkResult.txt"
fi
lilo=$(cat /etc/lilo.conf | grep password)
if [ $? -eq 0 ];then
echo "Y:已設(shè)置lilo密碼,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:沒有設(shè)置lilo密碼,不符合要求,建議設(shè)置lilo密碼" >> "/tmp/${ipadd}_checkResult.txt"
fi
#編號:SBL-Linux-02-02-01
#項(xiàng)目:文件系統(tǒng)-重要目錄和文件的權(quán)限設(shè)置
#合格:Y;不合格:N
#不合格地方
echo "SBL-Linux-02-02-01:" >> "/tmp/${ipadd}_checkResult.txt"
echo "***************************"
echo "檢查重要文件權(quán)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}'`
#檢測文件權(quán)限為400的文件
if [ $file2 = "-r--------" ];then
echo "Y:/etc/shadow文件權(quán)限為400,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:/etc/shadow文件權(quán)限不為400,不符合要求,建議設(shè)置權(quán)限為400" >> "/tmp/${ipadd}_checkResult.txt"
fi
#檢測文件權(quán)限為600的文件
if [ $file4 = "-rw-------" ];then
echo "Y:/etc/security文件權(quán)限為600,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:/etc/security文件權(quán)限不為600,不符合要求,建議設(shè)置權(quán)限為600" >> "/tmp/${ipadd}_checkResult.txt"
fi
if [ $file6 = "-rw-------" ];then
echo "Y:/etc/xinetd.conf文件權(quán)限為600,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:/etc/xinetd.conf文件權(quán)限不為600,不符合要求,建議設(shè)置權(quán)限為600" >> "/tmp/${ipadd}_checkResult.txt"
fi
if [ $file7 = "-rw-------" ];then
echo "Y:/etc/grub.conf文件權(quán)限為600,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:/etc/grub.conf文件權(quán)限不為600,不符合要求,建議設(shè)置權(quán)限為600" >> "/tmp/${ipadd}_checkResult.txt"
fi
if [ -f /etc/lilo.conf ];then
if [ $file8 = "-rw-------" ];then
echo "Y:/etc/lilo.conf文件權(quán)限為600,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:/etc/lilo.conf文件權(quán)限不為600,不符合要求,建議設(shè)置權(quán)限為600" >> "/tmp/${ipadd}_checkResult.txt"
fi
else
echo "N:/etc/lilo.conf文件夾不存在"
fi
#檢測文件權(quán)限為644的文件
if [ $file1 = "-rw-r--r--" ];then
echo "Y:/etc/passwd文件權(quán)限為644,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:/etc/passwd文件權(quán)限不為644,不符合要求,建議設(shè)置權(quán)限為644" >> "/tmp/${ipadd}_checkResult.txt"
fi
if [ $file5 = "-rw-r--r--" ];then
echo "Y:/etc/services文件權(quán)限為644,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:/etc/services文件權(quán)限不為644,不符合要求,建議設(shè)置權(quán)限為644" >> "/tmp/${ipadd}_checkResult.txt"
fi
if [ $file3 = "-rw-r--r--" ];then
echo "Y:/etc/group文件權(quán)限為644,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:/etc/group文件權(quán)限不為644,不符合要求,建議設(shè)置權(quán)限為644" >> "/tmp/${ipadd}_checkResult.txt"
fi
#編號:SBL-Linux-02-02-02
#項(xiàng)目:文件系統(tǒng)-查找未授權(quán)的SUID/SGID文件
#合格:Y;不合格:N
#不合格地方
echo "SBL-Linux-02-02-02:" >> "/tmp/${ipadd}_checkResult.txt"
unauthorizedfile=`find / \( -perm -04000 -o -perm -02000 \) -type f `
echo "C:文件${unauthorizedfile}設(shè)置了SUID/SGID,請檢查是否授權(quán)" >> "/tmp/${ipadd}_checkResult.txt"
#編號:SBL-Linux-02-02-03
#項(xiàng)目:文件系統(tǒng)-檢查任何人都有寫權(quán)限的目錄
#合格:Y;不合格:N;檢查:C
#不合格地方
echo "SBL-Linux-02-02-03:" >> "/tmp/${ipadd}_checkResult.txt"
checkWriteDre=$(find / -xdev -mount -type d \( -perm -0002 -a ! -perm -1000 \) 2> /dev/null)
if [ -z "${checkWriteDre}" ];then
echo "Y:不存在任何人都有寫權(quán)限的目錄,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:${checkWriteDre}目錄任何人都可以寫,不符合要求" >> "/tmp/${ipadd}_checkResult.txt"
fi
#編號:SBL-Linux-02-02-04
#項(xiàng)目:文件系統(tǒng)-檢查任何人都有寫權(quán)限的文件
#合格:Y;不合格:N;檢查:C
#不合格地方
echo "SBL-Linux-02-02-04:" >> "/tmp/${ipadd}_checkResult.txt"
checkWriteFile=$(find / -xdev -mount -type f \( -perm -0002 -a ! -perm -1000 \) 2> /dev/null)
if [ -z "${checkWriteFile}" ];then
echo "Y:不存在任何人都有寫權(quán)限的目錄,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:${checkWriteFile}目錄任何人都可以寫,不符合要求" >> "/tmp/${ipadd}_checkResult.txt"
fi
#編號:SBL-Linux-02-02-05
#項(xiàng)目:文件系統(tǒng)-檢查異常隱含文件
#合格:Y;不合格:N;檢查:C
#不合格地方
echo "SBL-Linux-02-02-05:" >> "/tmp/${ipadd}_checkResult.txt"
hideFile=$(find / -xdev -mount \( -name "..*" -o -name "...*" \) 2> /dev/null)
if [ -z "${hideFile}" ];then
echo "Y:不存在隱藏文件,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:${hideFile}是隱藏文件,建議審視" >> "/tmp/${ipadd}_checkResult.txt"
fi
#編號:SBL-Linux-03-01-01
#項(xiàng)目:日志審計(jì)-syslog登錄事件記錄
#合格:Y;不合格:N;檢查:C
#不合格地方
echo "SBL-Linux-03-01-01:" >> "/tmp/${ipadd}_checkResult.txt"
recodeFile=$(cat /etc/syslog.conf)
if [ ! -z "${recodeFile}" ];then
logFile=$(cat /etc/syslog.conf | grep -V ^# | grep authpriv.*)
if [ ! -z "${logFile}" ];then
echo "Y:存在保存authpirv的日志文件" >> "/tmp/${ipadd}_checkResult.txt"
else
echo "N:不存在保存authpirv的日志文件" >> "/tmp/${ipadd}_checkResult.txt"
fi
else
echo "N:不存在/etc/syslog.conf文件,建議對所有登錄事件都記錄" >> "/tmp/${ipadd}_checkResult.txt"
fi
#編號:SBL-Linux-03-01-02
#項(xiàng)目:系統(tǒng)文件-檢查日志審核功能是否開啟
#合格:Y;不合格:N;檢查:C
echo "SBL-Linux-03-01-02:" >> "/tmp/${ipadd}_checkResult.txt"
auditdStatus=$(service auditd status 2> /dev/null)
if [ $? = 0 ];then
echo "Y:系統(tǒng)日志審核功能已開啟,符合要求" >> "/tmp/${ipadd}_checkResult.txt"
fi
if [ $? = 3 ];then
echo "N:系統(tǒng)日志審核功能已關(guān)閉,不符合要求,建議service auditd start開啟" >> "/tmp/${ipadd}_checkResult.txt"
fi
#編號:SBL-Linux-04-01-01
#項(xiàng)目:系統(tǒng)文件-系統(tǒng)core dump狀態(tài)
#合格:Y;不合格:N;檢查:C
echo "SBL-Linux-04-01-01:" >> "/tmp/${ipadd}_checkResult.txt"
limitsFile=$(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"x = "soft"x ];then
echo "Y:* soft core 0 已經(jīng)設(shè)置" >> "/tmp/${ipadd}_checkResult.txt"
fi
if [ "$i"x = "hard"x ];then
echo "Y:* hard core 0 已經(jīng)設(shè)置" >> "/tmp/${ipadd}_checkResult.txt"
fi
done
else
echo "N:沒有設(shè)置core,建議在/etc/security/limits.conf中添加* soft core 0和* hard core 0" >> "/tmp/${ipadd}_checkResult.txt"
fi
#編號:SBL-Linux-04-01-02
#項(xiàng)目:系統(tǒng)文件-檢查磁盤動(dòng)態(tài)空間,是否大于等于80%
#合格:Y;不合格:N;檢查:C
#
echo "SBL-Linux-04-01-02:" >> "/tmp/${ipadd}_checkResult.txt"
space=$(df -h | awk -F "[ %]+" 'NR!=1{print $5}')
for i in $space
do
if [ $i -ge 80 ];then
echo "C:警告!磁盤存儲容量大于80%,建議擴(kuò)充磁盤容量或者刪除垃圾文件" >> "/tmp/${ipadd}_checkResult.txt"
fi
done
原文鏈接:https://www.cnblogs.com/pythonal/p/10017160.html
作者:釋然IT雜談
歡迎關(guān)注微信公眾號 :釋然IT雜談