linux常因openssl、openssh漏洞进行升级。
本文以ubuntu22.04为例，对openssl、openssh进行升级。

一.升级openssl


1.官网下载最新版openssl

1. wget https://www.openssl.org/source/openssl-3.0.15.tar.gz

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如果因网络原因下载不动，可以直接访问官网，下载最新版本：
https://www.openssl.org/source/

1. root@localhost:~# wget https://www.openssl.org/source/openssl-3.0.15.tar.gz
   
2. --2024-07-19 07:31:28--  https://www.openssl.org/source/openssl-3.0.15.tar.gz
   
3. Resolving www.openssl.org (www.openssl.org)... 34.36.58.177, 2600:1901:0:1812::
   
4. Connecting to www.openssl.org (www.openssl.org)|34.36.58.177|:443... connected.
   
5. HTTP request sent, awaiting response... 301 Moved Permanently
   
6. Location: https://github.com:443/openssl/openssl/releases/download/openssl-3.0.15/openssl-3.0.15.tar.gz [following]
   
7. --2024-07-19 07:31:29--  https://objects.githubusercontent.com/github-production-release-asset-2e65be/7634677/6ac36897-7f0a-4dc5-8d1c-3d8b0eab4f5d?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=releaseassetproduction%2F20240719%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20240719T073129Z&X-Amz-Expires=300&X-Amz-Signature=658f52e12bd883cbda4f7abcbac2508a5642bccc70baf8d159b4e39a31623702&X-Amz-SignedHeaders=host&actor_id=0&key_id=0&repo_id=7634677&response-content-disposition=attachment%3B%20filename%3Dopenssl-3.0.15.tar.gz&response-content-type=application%2Foctet-stream
   
8. Resolving objects.githubusercontent.com (objects.githubusercontent.com)... 185.199.111.133, 185.199.108.133, 185.199.109.133
   
9. Connecting to objects.githubusercontent.com (objects.githubusercontent.com)|185.199.111.133|:443... connected.
   
10. HTTP request sent, awaiting response... 200 OK
    
11. Length: 15305497 (15M) [application/octet-stream]
    
12. Saving to: ‘openssl-3.0.15.tar.gz'
    
13. 
    
14. openssl-3.0.15.tar.gz                  100%[===========================================================================>]  14.60M  81.0KB/s    in 4m 17s  
    
15. 
    
16. 2024-07-19 07:35:48 (58.1 KB/s) - ‘openssl-3.0.15.tar.gz' saved [15305497/15305497]

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2.安装编译环境

1. apt-get install -y build-essential

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1. root@localhost:/opt/openssl-3.0.15# apt-get install -y build-essential
   
2. Reading package lists... Done
   
3. Building dependency tree... Done
   
4. Reading state information... Done
   
5. The following additional packages will be installed:
   
6.   bzip2 cpp cpp-11 dpkg-dev fakeroot fontconfig-config fonts-dejavu-core g++ g++-11 gcc gcc-11 gcc-11-base libalgorithm-diff-perl
   
7.   libalgorithm-diff-xs-perl libalgorithm-merge-perl libasan6 libatomic1 libc-dev-bin libc-devtools libc6-dev libcc1-0 libcrypt-dev libdeflate0
   
8.   libdpkg-perl libfakeroot libfile-fcntllock-perl libfontconfig1 libgcc-11-dev libgd3 libgomp1 libisl23 libitm1 libjbig0 libjpeg-turbo8 libjpeg8 liblsan0
   
9.   libmpc3 libnsl-dev libquadmath0 libstdc++-11-dev libtiff5 libtirpc-dev libtsan0 libubsan1 libwebp7 libxpm4 linux-libc-dev lto-disabled-list make
   
10.   manpages-dev rpcsvc-proto
    
11. Suggested packages:
    
12.   bzip2-doc cpp-doc gcc-11-locales debian-keyring g++-multilib g++-11-multilib gcc-11-doc gcc-multilib autoconf automake libtool flex bison gdb gcc-doc
    
13.   gcc-11-multilib glibc-doc bzr libgd-tools libstdc++-11-doc make-doc

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如果系统为CentOS，则执行

1. yum install perl-IPC-Cmd perl-Data-Dumper gcc gcc-c++ perl perl-devel -y

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3.下载后解压安装

1. tar -xf openssl-3.0.15.tar.gz -C /opt/

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进入目录

1. cd /opt/openssl-3.0.15

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编译配置openssl安装目录

1. ./config --prefix=/usr/local/openssl

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1. root@localhost:~# tar -xf openssl-3.0.15.tar.gz -C /opt/
   
2. root@localhost:~# cd /opt/openssl-3.0.15/
   
3. root@localhost:/opt/openssl-3.0.15# ./config --prefix=/usr/local/openssl
   
4. Configuring OpenSSL version 3.0.15 for target linux-x86_64
   
5. Using os-specific seed configuration
   
6. Created configdata.pm
   
7. Running configdata.pm
   
8. Created Makefile.in
   
9. Created Makefile
   
10. Created include/openssl/configuration.h
    
11. 
    
12. **********************************************************************
    
13. ***                                                                ***
    
14. ***   OpenSSL has been successfully configured                     ***
    
15. ***                                                                ***
    
16. ***   If you encounter a problem while building, please open an    ***
    
17. ***   issue on GitHub <https://github.com/openssl/openssl/issues>  ***
    
18. ***   and include the output from the following command:           ***
    
19. ***                                                                ***
    
20. ***       perl configdata.pm --dump                                ***
    
21. ***                                                                ***
    
22. ***   (If you are new to OpenSSL, you might want to consult the    ***
    
23. ***   'Troubleshooting' section in the INSTALL.md file first)      ***
    
24. ***                                                                ***
    
25. **********************************************************************

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安装

1. make && make install

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1. root@localhost:/opt/openssl-3.0.15# make && make install/usr/bin/perl "-I." -Mconfigdata "util/dofile.pl" "-oMakefile" include/crypto/bn_conf.h.in > include/crypto/bn_conf.h/usr/bin/perl "-I." -Mconfigdata "util/dofile.pl" "-oMakefile" include/crypto/dso_conf.h.in > include/crypto/dso_conf.h/usr/bin/perl "-I." -Mconfigdata "util/dofile.pl" "-oMakefile" include/openssl/asn1.h.in > include/openssl/asn1.h/usr/bin/perl "-I." -Mconfigdata "util/dofile.pl" "-oMakefile" include/openssl/asn1t.h.in > include/openssl/asn1t.h/usr/bin/perl "-I." -Mconfigdata "util/dofile.pl" "-oMakefile" include/openssl/bio.h.in > include/openssl/bio.h/usr/bin/perl "-I." -Mconfigdata "util/dofile.pl" "-oMakefile" include/openssl/cmp.h.in > include/openssl/cmp.h

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4.备份更新openssl

备份openssl

1. mv /usr/bin/openssl /usr/bin/openssl_bak

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复制openssl文件到/usr/bin/下

1. cp /usr/local/openssl/bin/openssl /usr/bin/

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添加动态链接库数据

1. echo ‘/usr/local/openssl/lib64/' >> /etc/ld.so.conf

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更新动态链接库

1. ldconfig

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1. root@localhost:/opt/openssl-3.0.15# mv /usr/bin/openssl /usr/bin/openssl_bak
   
2. root@localhost:/opt/openssl-3.0.15# cp /usr/local/openssl/bin/openssl  /usr/bin/
   
3. root@localhost:/opt/openssl-3.0.15# echo "/usr/local/openssl/lib64/" >> /etc/ld.so.conf
   
4. root@localhost:/opt/openssl-3.0.15# ldconfig

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5.进行验证

1. openssl version

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1. root@localhost:/usr/local/openssl/lib64# openssl version
   
2. OpenSSL 3.0.15 3 Sep 2024 (Library: OpenSSL 3.0.15 3 Sep 2024)

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若出现如下问题

1. root@localhost:/opt/openssl-3.0.15# openssl version
   
2. openssl: /lib/x86_64-linux-gnu/libcrypto.so.3: version `OPENSSL_3.0.9' not found (required by openssl)

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备份libcrypto.so.3文件后，复制安装目录下lib64/libcrypto.so.3到/lib/x86_64-linux-gnu/目录

1. root@localhost:/opt/openssl-3.0.15# cd /usr/local/openssl/lib64/root@localhost:/usr/local/openssl/lib64# lltotal 16636drwxr-xr-x 5 root root    4096 Jul 19 07:49 ./drwxr-xr-x 7 root root    4096 Jul 19 07:50 ../drwxr-xr-x 2 root root    4096 Jul 19 07:49 engines-3/-rw-r--r-- 1 root root 9541222 Jul 19 07:49 libcrypto.alrwxrwxrwx 1 root root      14 Jul 19 07:49 libcrypto.so -> libcrypto.so.3*-rwxr-xr-x 1 root root 5383824 Jul 19 07:49 libcrypto.so.3*-rw-r--r-- 1 root root 1268762 Jul 19 07:49 libssl.alrwxrwxrwx 1 root root      11 Jul 19 07:49 libssl.so -> libssl.so.3*-rwxr-xr-x 1 root root  813928 Jul 19 07:49 libssl.so.3*drwxr-xr-x 2 root root    4096 Jul 19 07:49 ossl-modules/drwxr-xr-x 2 root root    4096 Jul 19 07:49 pkgconfig/root@localhost:/usr/local/openssl/lib64# mv /lib/x86_64-linux-gnu/libcrypto.so.3 /root/root@localhost:/usr/local/openssl/lib64# cp libcrypto.so.3 /lib/x86_64-linux-gnu/root@localhost:/usr/local/openssl/lib64# openssl version
   
2. OpenSSL 3.0.15 3 Sep 2024 (Library: OpenSSL 3.0.15 3 Sep 2024)

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二、升级openssh


1.下载最新版openssh

1. wget
   
2. https://cdn.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-9.9p1.tar.gz

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如因网络原因下载不动，可以直接访问 ，下载最新版本https://cdn.openbsd.org/pub/OpenBSD/OpenSSH/portable

2.安装相关依赖

1. apt-get install -y zlib1g-dev libpam0g-dev

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1. root@localhost:~#  apt-get install -y  zlib1g-dev libpam0g-dev
   
2. Reading package lists... Done
   
3. Building dependency tree... Done
   
4. Reading state information... Done
   
5. The following NEW packages will be installed:
   
6.   libpam0g-dev zlib1g-dev
   
7. 0 upgraded, 2 newly installed, 0 to remove and 67 not upgraded.
   
8. Need to get 281 kB of archives.
   
9. After this operation, 1,010 kB of additional disk space will be used.
   
10. Get:1 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 libpam0g-dev amd64 1.4.0-11ubuntu2.4 [117 kB]
    
11. Get:2 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 zlib1g-dev amd64 1:1.2.11.dfsg-2ubuntu9.2 [164 kB]
    
12. Fetched 281 kB in 2s (142 kB/s)

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系统为CentOS，则执行

1. yum install zlib-devel pam-devel -y

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3.解压安装

1. tar xf openssh-9.9p1.tar.gz -C /opt/
   
2. cd /opt/openssh-9.9p1

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配置安装目录

1. ./configure --prefix=/usr/local/openssh
   
2. –with-ssl-dir=/usr/local/openssl --sysconfdir=/etc/ssh --with-pam --with-gssapi --with-rsa --with-rhosts-allowed --with-zlib --with-md5-passwords

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编译安装

1. make && make install

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4.查看目录版本

1. /usr/local/openssh/bin/ssh -V

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1. root@localhost:/usr/local/openssh# ./bin/ssh -V
   
2. OpenSSH_9.9p1, OpenSSL 3.0.15 3 Sep 2024

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5.备份替换相关文件

1. mv /usr/sbin/sshd /usr/sbin/sshd_bak
   
2. mv /usr/bin/ssh /usr/bin/ssh_bak
   
3. mv /usr/bin/ssh-keygen /usr/bin/ssh-keygen_bak

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1. cp -rf /usr/local/openssh/sbin/sshd /usr/sbin/sshd
   
2. cp -rf /usr/local/openssh/bin/ssh /usr/bin/ssh
   
3. cp -rf /usr/local/openssh/bin/ssh-keygen /usr/bin/ssh-keygen

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6.重启ssh服务

1. systemctl restart sshd

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1. root@localhost:/usr/local/openssh# systemctl restart sshd.service
   
2. root@localhost:/usr/local/openssh# ssh -V
   
3. OpenSSH_9.9p1, OpenSSL 3.0.15 3 Sep 2024

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执行ssh服务状态查询命令

1. systemctl status sshd.service

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查看发现文件的权限设置过于宽松

1. Permissions 0640 for'/etc/ssh/*****.key' are too open.

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执行chmod -R 600 /etc/ssh限制权限后重启ssh服务

1. systemctl restart sshd

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总结

以上为个人经验，希望能给大家一个参考，也希望大家多多支持脚本之家。

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