升级openssh后出现xshell、CRT等工具无法连接问题

描述：某工程在进行ssh漏洞修复过程中升级openssh后输入用户名密码被拒绝（如下图）通过带外重定向到操作系统发现日志出现PAM unable to dlopen和 PAM adding faulty module的报错

经排查发现是ssh rpm 包升级后会修改/etc/pam.d/sshd 文件（如下图）

和其他服务器对比，正常可登录的/etc/pam.d/sshd文件如下

#%PAM-1.0
auth       required    pam_sepermit.so
auth       substack     password-auth
auth       include      postlogin
# Used with polkit to reauthorize users in remote sessions
-auth      optional     pam_reauthorize.so prepare
account    required     pam_nologin.so
account    include      password-auth
password   include      password-auth
# pam_selinux.so close should be the first session rule
session    required     pam_selinux.so close
session    required     pam_loginuid.so
# pam_selinux.so open should only be followed by sessions to be executed in the user context
session    required     pam_selinux.so open env_params
session    required     pam_namespace.so
session    optional     pam_keyinit.so force revoke
session    include      password-auth
session    include      postlogin
# Used with polkit to reauthorize users in remote sessions
-session   optional     pam_reauthorize.so prepare

解决：

　　修复/etc/pam.d/sshd文件，重启服务即可