ubantu22.04下SSH升级到9.92p

mahan

可能各位小伙伴的系统也面临等保测试高危漏洞问题了（低版本openssh存在多个高风险漏洞，如远程代码执行、缓冲区溢出等），下面就让我分享一下我的升级过程。
提前准备aliyun的镜像仓库地址：
# 默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释
deb https://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
# deb-src https://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse

deb https://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
# deb-src https://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse

deb https://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
# deb-src https://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse

deb https://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
# deb-src https://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse

# 预发布软件源，不建议启用
# deb https://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse
# deb-src https://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse


1、先升级相关包

apt update
apt install build-essential libssl-dev zlib1g-dev
apt-get install libpam0g-dev
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2、备份ssh相关文件(由于之间自己没有删除原配置文件，明明是按照规范步骤升级，还是不能使用root登录，因为在安装时发现有配置文件不会覆盖，导致升级出现问题)

mv /etc/ssh/ssh_config /etc/ssh/ssh_config_backup
mv /etc/ssh/sshd_config /etc/ssh/sshd_config_backup
mv /etc/ssh/moduli /etc/ssh/moduli_backup
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3、安装和编译

wget https://cdn.openbsd.org/pub/Open ... penssh-9.9p2.tar.gz
tar -zxvf openssh-9.9p2.tar.gz
cd openssh-9.9p2

./configure --prefix=/usr --sysconfdir=/etc/ssh --with-md5-passwords --with-pam
make
make install
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4、修改配置

vim /etc/ssh/sshd_config
在末尾添加
PermitRootLogin yes
X11Forwarding yes
PasswordAuthentication yes
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5、重启

sudo systemctl restart sshd
查看版本
ssh -V
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6、验证

telnet ip 22