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rhel 7.6 升级openssl/openssh

rhel 7.6 升级openssl/openssh

前几天公司安全扫描发现一批rhel 5 openSSL/SSH漏洞,作为运维就要及时漏洞升级提高安全性。今天又扫出一批rhel 7.6,预计7.6,7.3及6.9,6.5都要进行安全加固。

依旧是源码编译处理,rpm升级虽然省事,但是我还是倾向于源码编译添加需要的模块更适合各种场景。 

1.环境

Red Hat Enterprise Linux Server release 7.6 (Maipo)

2.升级版本

名称当前版本升级后版本
perl v5.16.3 v5.30.3
OpenSSL 1.0.2k 1.1.1o
openSSH 8.6p1 8.8p1

 

# openssl version -a
OpenSSL 1.0.2k-fips  26 Jan 2017
 
# ssh -V
OpenSSH_8.6p1, OpenSSL 1.0.2k-fips  26 Jan 2017

升级的源码包:

perl-5.30.3.tar.gz openssh-8.8p1.tar.gz   openssl-1.1.1o.tar.gz

3.升级方案

3.1 安装编译的依赖包

需配置源进行安装

yum -y install gcc gcc-c++ glibc make zlib zlib-devel pam-devel

 

3.2 升级Perl

#编译操作
cd /home/wei
tar zxvf perl-5.30.3.tar.gz
cd /home/wei/perl-5.30.3
./Configure -des -Dprefix=/usr/local/perl && echo $? || exit
make && echo $?
make test
make install
​
#替换版本
mv /usr/bin/perl /usr/bin/perl.bak
ln -s /usr/local/perl/bin/perl /usr/bin/perl
perl -v 

 

3.3 升级OpenSSL

#编译操作
cd /home/wei
tar zxvf openssl-1.1.1o.tar.gz 
cd /home/wei/openssl-1.1.1o
./config --prefix=/usr/local/ssl shared zlib
make install && echo $?
​
#替换版本
mv /usr/bin/openssl /usr/bin/openssl.bak
ln -s /usr/local/ssl/bin/openssl /usr/bin/openssl
cat > /etc/ld.so.conf.d/ssl.conf <<EOF
/usr/local/ssl/lib
EOF
ldconfig
openssl version

3.4 升级openSSH

#备份配置
cp -ar /etc/ssh/ /etc/ssh.bak
cp -ar /etc/pam.d /etc/pam.d.bak
cd /usr/bin/
cp ssh ssh.bak
cp ssh-add ssh-add.bak
cp ssh-keygen ssh-keygen.bak
cp ssh-keyscan ssh-keyscan.bak
cp scp scp.bak
cp sftp sftp.bak
cp /usr/sbin/sshd /usr/sbin/sshd.bak
cp /etc/init.d/sshd /etc/init.d/sshd.bak
​
#编译部署
cd /home/wei
tar zxvf openssh-8.8p1.tar.gz 
cd ./openssh-8.8p1
./configure --prefix=/usr/local/openssh --sysconfdir=/etc/ssh --with-pam --with-zlib --without-openssl-header-check --with-ssl-dir=/usr/local/ssl --with-privsep-path=/var/lib/sshd
make && echo $?
make install 
​
#更换版本
ln -sf /usr/local/openssh/bin/ssh /usr/bin/ssh
ln -sf /usr/local/openssh/bin/ssh-add /usr/bin/ssh-add
ln -sf /usr/local/openssh/bin/ssh-agent /usr/bin/ssh-agent
ln -sf /usr/local/openssh/bin/ssh-keygen /usr/bin/ssh-keygen
ln -sf /usr/local/openssh/bin/ssh-keyscan /usr/bin/ssh-keyscan
ln -sf /usr/local/openssh/bin/scp /usr/bin/scp
ln -sf /usr/local/openssh/bin/sftp /usr/bin/sftp
ln -sf /usr/local/openssh/sbin/sshd /usr/sbin/sshd
cp  contrib/redhat/sshd.init /etc/init.d/sshd
chmod a+x /etc/init.d/sshd
chmod a+x -R /usr/local/openssh/*
chkconfig --del sshd
chkconfig --add sshd
chkconfig --list|grep sshd
​
#恢复pam
cp /etc/pam.d.bak/sshd /etc/pam.d/sshd
--------------------------------------
sed -i.bak 's/GSSAPIAuthentication yes/#GSSAPIAuthentication yes/' /etc/ssh/sshd_config
sed -ri "/^GSSAPICleanupCredentials.*/s/(.*)/#\1/" /etc/ssh/sshd_config

​
service sshd restart
​
​
# ssh -V && openssl version
OpenSSH_8.8p1, OpenSSL 1.1.1o  3 May 2022
OpenSSL 1.1.1o  3 May 2022

 

4.回退方案

回退安装升级的顺序依次降级到旧版本

4.1 降级perl

rm -f /usr/bin/perl
cp  /usr/bin/perl.bak /usr/bin/perl
perl -v 

 

4.2 降级OpenSSL

rm -f  /usr/bin/openssl /etc/ld.so.conf.d/ssl.conf 
cp  /usr/bin/openssl.bak /usr/bin/openssl
ldconfig
openssl version

4.3 降级openssh

\cp -ar  /etc/ssh.bak /etc/ssh/
\cp -ar  /etc/pam.d.bak  /etc/pam.d
cd /usr/bin/
rm -f  ssh ssh-add  ssh-keygen  ssh-keyscan scp sftp
\cp  ssh.bak  ssh
\cp  ssh-add.bak ssh-add
\cp  ssh-keygen.bak ssh-keygen
\cp  ssh-keyscan.bak  ssh-keyscan
\cp  scp.bak  scp
\cp  sftp.bak    sftp
\cp  /usr/sbin/sshd.bak /usr/sbin/sshd
\cp  /etc/init.d/sshd.bak /etc/init.d/sshd
​
chmod a+x /etc/init.d/sshd
/sbin/chkconfig --del sshd
/sbin/chkconfig --add sshd
/sbin/chkconfig --list|grep sshd
​
#恢复pam
cp /etc/pam.d.bak/sshd /etc/pam.d/sshd
​
service sshd restart
​
# ssh -V && openssl version
OpenSSH_8.6p1, OpenSSL 1.0.1e-fips 11 Feb 2013
OpenSSL 1.0.2k-fips  26 Jan 2017

下载地址

OpenSSL官网下载地址:https://www.openssl.org/source/

OpenSSH官网地址:https://www.openssh.com/openbsd.html

本人博客文章地址: http://t.csdn.cn/0FjQK

posted @ 2022-06-28 22:17  九尾cat  阅读(698)  评论(0编辑  收藏  举报