前言: 根据 国家信息安全漏洞共享平台 漏洞统计报告,信息安全数据泄露,漏洞入侵时时刻刻都在发生着,我们必须实时监控漏洞发现与威胁感知,及时预警网络安全漏洞的存在,以便及时整改修复漏洞,避免产生更大的安全事故,确保业务和系统的网络安全、稳定,促进社会的和谐发展。
一、OpenSSH 介绍
OpenSSH 是 SSH (Secure SHell) 协议的免费开源实现。SSH协议族可以用来进行远程控制, 或在计算机之间传送文件。而实现此功能的传统方式,如telnet(终端仿真协议)、 rcp ftp、 rlogin、rsh都是极为不安全的,并且会使用明文传送密码。OpenSSH提供了服务端后台程序和客户端工具,用来加密远程控制和文件传输过程中的数据,并由此来代替原来的类似服务。
二、源码包官网
目前基于最新的OpenSSH-9.0p1、OpenSSL1.1.1p更新 (可根据个人情况下载、更换脚本源码包地址),测试环境为Centos7.x以上,其他版本请自测!
Zlib官网:http://www.zlib.net/
OpenSSL官网:https://www.openssl.org/
OpenSSH官网:https://www.openssh.com/
注: 手动下载官方源码包时,可能会非常慢,可以去常用的镜像站点(比如 清华镜像站、阿里镜像站 等)去下载
三、OpenSSH 安装
1.开启 telnet 服务,临时关闭防火墙
由于一般登录方式为ssh,所以需要安装其他登录方式,比如Telnet服务,防止升级失败
#安装telnet
yum install xinetd telnet-server telnet -y
#备份文件securetty
mv /etc/securetty.bak
#配置telnet登录的终端类型,增加一些pts终端
pts=$'pts/0\npts/1\npts/2\npts/3' && echo "$pts" >> /etc/securetty
#开启服务
systemctl start telnet.socket
service xinetd start
#关闭防火墙(或者开启23端口)
systemctl stop firewalld.service
systemctl disable firewalld.service
2.环境准备
#安装wget
yum install -y wget
#安装tar
yum install -y tar
#软件包准备
cd /opt #解压目录
wget --no-check-certificate https://www.zlib.net/zlib-1.2.12.tar.gz
wget --no-check-certificate https://www.openssl.org/source/openssl-1.1.1p.tar.gz
wget --no-check-certificate https://cdn.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-9.0p1.tar.gz
#解压软件包
tar -zxvf zlib-1.2.12.tar.gz
tar -zxvf openssl-1.1.1p.tar.gz
tar -zxvf openssh-9.0p1.tar.gz
#备份
mv /etc/ssh /etc/ssh.bak
cp /etc/pam.d/sshd.pam /etc/pam.d/sshd.pam.bak
cp /etc/init.d/sshd /etc/init.d/sshd.bak
cp /usr/bin/openssl /usr/bin/openssl.bak
##卸载原有的openssh
rpm -e --nodeps `rpm -qa | grep openssh`
###安装相关依赖包
yum install vim gcc gcc-c++ glibc make autoconf openssl openssl-devel pcre-devel pam-devel zlib-devel tcp_wrappers-devel tcp_wrappers;
3.SSH安装
3.1 Zlib安装
#进入zlib解压目录
cd /opt/zlib-1.2.12
#编译安装
./configure --prefix=/usr/local/zlib
make && make test && make install
#
ll /usr/local/zlib
ldconfig -v
/sbin/ldconfig
1
2
3
4
5
6
7
8
9
10
11
12
3.2 OpenSSL安装
#进入openssl解压目录
cd /opt/openssl-1.1.1p
#编译安装
./config shared zlib --prefix=/usr/local/ssl
make clean && make -j 4 && make install
#更新函数库
echo "/usr/lcoal/ssl/lib" >> /etc/ld.so.conf
ldconfig
ln -s /usr/local/ssl/bin/openssl /usr/bin/openssl
ln -s /usr/local/ssl/lib/libssl.so.1.1 /usr/lib64/libssl.so.1.1
ln -s /usr/local/ssl/lib/libcrypto.so.1.1 /usr/lib64/libcrypto.so.1.1
#检查是否升级成功
openssl version -a
3.3 OpenSSH安装
#进入openssh解压目录
cd /opt/openssh-9.0p1
#编译安装
./configure --prefix=/usr/local/ssh --sysconfdir=/etc/ssh --with-ssl-dir=/usr/local/ssl --with-zlib=/usr/local/zlib
make -j 4 && make install
#查看目录版本
/usr/local/ssh/bin/ssh -V
#复制新ssh文件
cp -rf /opt/openssh-9.0p1/contrib/redhat/sshd.init /etc/init.d/sshd
cp -rf /opt/openssh-9.0p1/contrib/redhat/sshd.pam /etc/pam.d/sshd.pam
cp -rf /opt/openssh-9.0p1/sshd_config /etc/ssh/sshd_config
cp -rf /usr/local/ssh/bin/sshd /usr/sbin/sshd
cp -rf /usr/local/ssh/bin/ssh /usr/bin/ssh
cp -rf /usr/local/ssh/bin/ssh-keygen /usr/bin/ssh-keygen
#开启sshd
chmod u+x /etc/init.d/sshd;
chkconfig --add sshd ##自启动
chkconfig --list |grep sshd
chkconfig sshd on
#允许root登录
echo 'PermitRootLogin yes' >> /etc/ssh/sshd_config
echo 'Subsystem sftp /usr/local/ssh/libexec/sftp-server'>> /etc/ssh/sshd_config
#重启sshd服务
/etc/init.d/sshd restart
/etc/init.d/sshd status
#查看升级后ssh版本
ssh -V
4.关闭 telnet 服务
#关闭telnet服务
systemctl stop xinetd.service
systemctl stop telnet.socket
#卸载telnet服务
yum remove xinetd telnet-server telnet -y
#开启防火墙
systemctl start firewalld.service
systemctl enable firewalld.service
5.SSH启动失败问题
1.Permissions 0737 for ‘/etc/ssh/ssh_host_rsa_key’ are too open”问题
chmod 600 /etc/ssh/ssh_host_rsa_key
chmod 600 /etc/ssh/ssh_host_dsa_key
chmod 600 /etc/ssh/ssh_host_ecdsa_key
chmod 600 /etc/ssh/ssh_host_ed25519_key
四、OpenSSH-9.0p1 升级脚本*
注:因为脚本根据个人情况,进行升级,固有些差异的地方需要根据实际情况修改!!
#!/bin/bash
#
#########################################################
# Function :openssh-9.0p1 update #
# Platform :Centos7.X #
# Version :2.0 #
# Date :2022-05-01 #
#########################################################
clear
export LANG="en_US.UTF-8"
#版本号
zlib_version="zlib-1.2.12"
openssl_version="openssl-1.1.1p"
openssh_version="openssh-9.0p1"
#安装包地址
file="/opt"
#默认编译路径
default="/usr/local"
date_time=`date +%Y-%m-%d—%H:%M`
#安装目录
file_install="$file/openssh_install"
file_backup="$file/openssh_backup"
file_log="$file/openssh_log"
#源码包链接
zlib_download="https://www.zlib.net/$zlib_version.tar.gz"
openssl_download="https://www.openssl.org/source/$openssl_version.tar.gz"
openssh_download="https://cdn.openbsd.org/pub/OpenBSD/OpenSSH/portable/$openssh_version.tar.gz"
Install_make()
{
# Check if user is root
if [ $(id -u) != "0" ]; then
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " 当前用户为普通用户,必须使用root用户运行,脚本退出中......" "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
sleep 4
exit
fi
#判断是否安装wget
echo -e "\033[33m 正在安装Wget...... \033[0m"
sleep 2
echo ""
if ! type wget >/dev/null 2>&1; then
yum install -y wget
else
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " wget已经安装了:" "\033[32m Please continue\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
fi
#判断是否安装tar
echo -e "\033[33m 正在安装TAR...... \033[0m"
sleep 2
echo ""
if ! type tar >/dev/null 2>&1; then
yum install -y tar
else
echo ""
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " tar已经安装了:" "\033[32m Please continue\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
fi
echo ""
#安装相关依赖包
echo -e "\033[33m 正在安装依赖包...... \033[0m"
sleep 3
echo ""
yum install gcc gcc-c++ glibc make autoconf openssl openssl-devel pcre-devel pam-devel zlib-devel tcp_wrappers-devel tcp_wrappers
if [ $? -eq 0 ];then
echo ""
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " 安装软件依赖包成功 " "\033[32m Success\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
else
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " 解压源码包失败,脚本退出中......" "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
sleep 4
exit
fi
echo ""
}
Install_backup()
{
#创建文件(可修改)
mkdir -p $file_install
mkdir -p $file_backup
mkdir -p $file_log
mkdir -p $file_backup/zlib
mkdir -p $file_backup/ssl
mkdir -p $file_backup/ssh
mkdir -p $file_log/zlib
mkdir -p $file_log/ssl
mkdir -p $file_log/ssh
#备份文件(可修改)
cp -rf /usr/bin/openssl $file_backup/ssl/openssl_$date_time.bak > /dev/null
cp -rf /etc/init.d/sshd $file_backup/ssh/sshd_$date_time.bak > /dev/null
cp -rf /etc/ssh $file_backup/ssh/ssh_$date_time.bak > /dev/null
cp -rf /usr/lib/systemd/system/sshd.service $file_backup/ssh/sshd_$date_time.service.bak > /dev/null
cp -rf /etc/pam.d/sshd.pam $file_backup/ssh/sshd_$date_time.pam.bak > /dev/null
}
Remove_openssh()
{
##并卸载原有的openssh(可修改)
rpm -e --nodeps `rpm -qa | grep openssh`
}
Install_tar()
{
#下载的源码包,检查是否解压(可修改)
# if [ -e $file/$zlib_version.tar.gz ] && [ -e $file/$openssl_version.tar.gz ] && [ -e /$file/$openssh_version.tar.gz ];then
# echo -e " 下载软件源码包已存在 " "\033[32m Please continue\033[0m"
# else
# echo -e "\033[33m 未发现本地源码包,链接检查获取中........... \033[0m "
# echo ""
# cd $file
# wget --no-check-certificate $zlib_download
# wget --no-check-certificate $openssl_download
# wget --no-check-certificate $openssh_download
# echo ""
# fi
#zlib
echo -e "\033[33m 正在下载Zlib软件包...... \033[0m"
sleep 3
echo ""
if [ -e $file/$zlib_version.tar.gz ] ;then
echo -e " 下载软件源码包已存在 " "\033[32m Please continue\033[0m"
else
echo -e "\033[33m 未发现zlib本地源码包,链接检查获取中........... \033[0m "
sleep 1
echo ""
cd $file
wget --no-check-certificate $zlib_download
echo ""
fi
#openssl
echo -e "\033[33m 正在下载Openssl软件包...... \033[0m"
sleep 3
echo ""
if [ -e $file/$openssl_version.tar.gz ] ;then
echo -e " 下载软件源码包已存在 " "\033[32m Please continue\033[0m"
else
echo -e "\033[33m 未发现openssl本地源码包,链接检查获取中........... \033[0m "
echo ""
sleep 1
cd $file
wget --no-check-certificate $openssl_download
echo ""
fi
#openssh
echo -e "\033[33m 正在下载Openssh软件包...... \033[0m"
sleep 3
echo ""
if [ -e /$file/$openssh_version.tar.gz ];then
echo -e " 下载软件源码包已存在 " "\033[32m Please continue\033[0m"
else
echo -e "\033[33m 未发现openssh本地源码包,链接检查获取中........... \033[0m "
echo ""
sleep 1
cd $file
wget --no-check-certificate $openssh_download
fi
}
echo ""
echo ""
#安装zlib
Install_zlib(){
echo -e "\033[33m 1.1-正在解压Zlib软件包...... \033[0m"
sleep 3
echo ""
cd $file && mkdir -p $file_install && tar -xzf zlib*.tar.gz -C $file_install > /dev/null
if [ -d $file_install/$zilb_version ];then
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " zilb解压源码包成功" "\033[32m Success\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
else
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " zilb解压源码包失败,脚本退出中......" "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
sleep 4
exit
fi
echo -e "\033[33m 1.2-正在编译安装Zlib服务.............. \033[0m"
sleep 3
echo ""
cd $file_install/zlib*
./configure --prefix=$default/$zlib_version > $file_log/zlib/zlib_configure_$date_time.txt #> /dev/null 2>&1
if [ $? -eq 0 ];then
echo -e "\033[33m make... \033[0m"
make > /dev/null 2>&1
echo $?
echo -e "\033[33m make test... \033[0m"
make test > /dev/null 2>&1
echo $?
echo -e "\033[33m make install... \033[0m"
make install > /dev/null 2>&1
echo $?
else
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " 编译安装压缩库失败,脚本退出中..." "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
sleep 4
exit
fi
if [ -e $default/$zlib_version/lib/libz.so ];then
sed -i '/zlib/'d /etc/ld.so.conf
echo "$default/$zlib_version/lib" >> /etc/ld.so.conf
echo "$default/$zlib_version/lib" >> /etc/ld.so.conf.d/zlib.conf
ldconfig -v > $file_log/zlib/zlib_ldconfig_$date_time.txt > /dev/null 2>&1
/sbin/ldconfig
fi
}
echo ""
echo ""
Install_openssl(){
echo -e "\033[33m 2.1-正在解压Openssl...... \033[0m"
sleep 3
echo ""
cd $file && tar -xvzf openssl*.tar.gz -C $file_install > /dev/null
if [ -d $file_install/$openssl_version ];then
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " OpenSSL解压源码包成功" "\033[32m Success\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
else
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " OpenSSL解压源码包失败,脚本退出中......" "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
sleep 4
exit
fi
echo ""
echo -e "\033[33m 2.2-正在编译安装Openssl服务...... \033[0m"
sleep 3
echo ""
cd $file_install/$openssl_version
./config shared zlib --prefix=$default/$openssl_version > $file_log/ssl/ssl_config_$date_time.txt #> /dev/null 2>&1
if [ $? -eq 0 ];then
echo -e "\033[33m make clean... \033[0m"
make clean > /dev/null 2>&1
echo $?
echo -e "\033[33m make -j 4... \033[0m"
make -j 4 > /dev/null 2>&1
echo $?
echo -e "\033[33m make install... \033[0m"
make install > /dev/null 2>&1
echo $?
else
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " 编译安装OpenSSL失败,脚本退出中..." "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
sleep 4
exit
fi
mv /usr/bin/openssl /usr/bin/openssl_$date_time.bak #先备份
if [ -e $default/$openssl_version/bin/openssl ];then
sed -i '/openssl/'d /etc/ld.so.conf
echo "$default/$openssl_version/lib" >> /etc/ld.so.conf
ln -s $default/$openssl_version/bin/openssl /usr/bin/openssl
ln -s $default/$openssl_version/lib/libssl.so.1.1 /usr/lib64/libssl.so.1.1
ln -s $default/$openssl_version/lib/libcrypto.so.1.1 /usr/lib64/libcrypto.so.1.1
ldconfig -v > $file_log/ssl/ssl_ldconfig_$date_time.txt > /dev/null 2>&1
/sbin/ldconfig
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " 编译安装OpenSSL " "\033[32m Success\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
echo -e "\033[33m 2.3-正在输出 OpenSSL 版本状态.............. \033[0m"
sleep 3
echo ""
echo -e "\033[32m====================== OpenSSL veriosn ===================== \033[0m"
echo ""
openssl version -a
echo ""
echo -e "\033[32m======================================================= \033[0m"
sleep 2
else
echo ""
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " OpenSSL软连接失败,脚本退出中..." "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
fi
}
echo ""
echo ""
Install_openssh(){
echo -e "\033[33m 3.1-正在解压OpenSSH...... \033[0m"
sleep 3
echo ""
cd $file && tar -xvzf openssh*.tar.gz -C $file_install > /dev/null
if [ -d $file_install/$openssh_version ];then
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " OpenSSh解压源码包成功" "\033[32m Success\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
else
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " OpenSSh解压源码包失败,脚本退出中......" "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
sleep 4
exit
fi
echo ""
echo -e "\033[33m 3.2-正在编译安装OpenSSH服务...... \033[0m"
sleep 3
echo ""
mv /etc/ssh /etc/ssh_$date_time.bak #先备份
cd $file_install/$openssh_version
./configure --prefix=$default/$openssh_version --sysconfdir=/etc/ssh --with-ssl-dir=$default/$openssl_version --with-zlib=$default/$zlib_version > $file_log/ssh/ssh_configure_$date_time.txt #> /dev/null 2>&1
if [ $? -eq 0 ];then
echo -e "\033[33m make -j 4... \033[0m"
make -j 4 > /dev/null 2>&1
echo $?
echo -e "\033[33m make install... \033[0m"
make install > /dev/null 2>&1
echo $?
else
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " 编译安装OpenSSH失败,脚本退出中......" "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
sleep 4
exit
fi
echo ""
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " 编译安装OpenSSH " "\033[32m Success\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
sleep 2
echo -e "\033[32m==================== OpenSSH—file veriosn =================== \033[0m"
echo ""
/usr/local/$openssh_version/bin/ssh -V
echo ""
echo -e "\033[32m======================================================= \033[0m"
sleep 3
echo ""
echo -e "\033[33m 3.3-正在迁移OpenSSH配置文件...... \033[0m"
sleep 3
echo ""
#迁移sshd
if [ -f "/etc/init.d/sshd" ];then
mv /etc/init.d/sshd /etc/init.d/sshd_$date_time.bak
else
echo -e " /etc/init.d/sshd不存在 " "\033[31m Not backed up(可忽略)\033[0m"
fi
cp -rf $file_install/$openssh_version/contrib/redhat/sshd.init /etc/init.d/sshd;
chmod u+x /etc/init.d/sshd;
chkconfig --add sshd ##自启动
chkconfig --list |grep sshd;
chkconfig sshd on
#备份启动脚本,不一定有
if [ -f "/usr/lib/systemd/system/sshd.service" ];then
mv /usr/lib/systemd/system/sshd.service /usr/lib/systemd/system/sshd.service_bak
else
echo -e " sshd.service不存在" "\033[31m Not backed up(可忽略)\033[0m"
fi
#备份复制sshd.pam文件
if [ -f "/etc/pam.d/sshd.pam" ];then
mv /etc/pam.d/sshd.pam /etc/pam.d/sshd.pam_$date_time.bak
else
echo -e " sshd.pam不存在" "\033[31m Not backed up(可忽略)\033[0m"
fi
cp -rf $file_install/$openssh_version/contrib/redhat/sshd.pam /etc/pam.d/sshd.pam
#迁移ssh_config
cp -rf $file_install/$openssh_version/sshd_config /etc/ssh/sshd_config
sed -i 's/Subsystem/#Subsystem/g' /etc/ssh/sshd_config
echo 'Subsystem sftp $default/$openssh_version/libexec/sftp-server'>> /etc/ssh/sshd_config
cp -rf $default/$openssh_version/sbin/sshd /usr/sbin/sshd
cp -rf /$default/$openssh_version/bin/ssh /usr/bin/ssh
cp -rf $default/$openssh_version/bin/ssh-keygen /usr/bin/ssh-keygen
sed -i 's/#PasswordAuthentication\ yes/PasswordAuthentication\ yes/g' /etc/ssh/sshd_config
#grep -v "[[:space:]]*#" /etc/ssh/sshd_config |grep "PubkeyAuthentication yes"
echo 'PermitRootLogin yes' >> /etc/ssh/sshd_config
#重启sshd
service sshd start > /dev/null 2>&1
if [ $? -eq 0 ];then
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " 启动OpenSSH服务成功" "\033[32m Success\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
sleep 2
#删除源码包(可修改)
rm -rf $file/*$zlib_version.tar.gz
rm -rf $file/*$openssl_version.tar.gz
rm -rf $file/*$openssh_version.tar.gz
#rm -rf $file_install
echo -e "\033[33m 3.4-正在输出 OpenSSH 版本...... \033[0m"
sleep 3
echo ""
echo -e "\033[32m==================== OpenSSH veriosn =================== \033[0m"
echo ""
ssh -V
echo ""
echo -e "\033[32m======================================================== \033[0m"
else
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " 启动OpenSSH服务失败,脚本退出中......" "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
sleep 4
exit
fi
echo ""
}
End_install()
{
##sshd状态
echo ""
echo -e "\033[33m 输出sshd服务状态: \033[33m"
sleep 2
echo ""
systemctl status sshd.service
echo ""
echo ""
echo ""
sleep 1
echo -e "\033[33m==================== OpenSSH file =================== \033[0m"
echo ""
echo -e " Openssh升级安装目录请前往: "
cd $file_install && pwd
cd ~
echo ""
echo -e " Openssh升级备份目录请前往: "
cd $file_backup && pwd
cd ~
echo ""
echo -e " Openssh升级日志目录请前往: "
cd $file_log && pwd
cd ~
echo ""
echo -e "\033[33m======================================================= \033[0m"
}
Install_make
Install_backup
Remove_openssh
Install_tar
Install_zlib
Install_openssl
Install_openssh
End_install
————————————————
版权声明:本文为CSDN博主「柒八九.」的原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接及本声明。
原文链接:https://blog.csdn.net/wlc_1111/article/details/125228426