Ubuntu Samba高危安全漏洞修复

Ubuntu Samba安全漏洞修复处理方法。
漏洞信息：
The version of Samba running on the remote host is 4.13.x prior to 4.13.17, 4.14.x prior to 4.14.12, or 4.15.x prior to 4.15.5. It is, therefore, affected by multiple vulnerabilities:

• Out-of-bounds heap read/write vulnerability in VFS module vfs_fruit allows code execution. (CVE-2021-44142)
• Information leak via symlinks of existence of files or directories outside of the exported share. (CVE-2021-44141)
• Samba AD users with permission to write to an account can impersonate arbitrary services. (CVE-2022-0336)

Solution
Upgrade to Samba version 4.13.17, 4.14.12, or 4.15.5 or later.

其实很简单，就是将现在samba的版本升级到4.15.5即可。

方法一：在线升级

确认Ubuntu可以正常连接外网的情况下，执行：
更新软件源：

apt-get update

更新samba：

sudo apt-get install samba

或者

sudo apt-get upgrade samba

注意检查samba更新后的参数：

[shared]
path=/home/sambatest
writable=yes
public=yes
browseable=yes
available=yes

重启服务生效：

sudo /etc/init.d/smbd  restart

或者

sudo systemctl  start samba.service

方法二：离线升级

首先至官网下载指定版本的samba安装文件

https://download.samba.org/pub/samba/stable/

通过winscp上传到Ubuntu后，进行安装即可。

以上就是Ubuntu samba漏洞修复的处理过程。希望帮助到大家。

samba安全通告链接参考如下：

https://www.samba.org/samba/history/security.html
https://www.samba.org/samba/security/CVE-2021-44141.html
https://www.samba.org/samba/security/CVE-2021-44142.html
https://www.samba.org/samba/security/CVE-2022-0336.html

来源：https://blog.csdn.net/weixin_37813152/article/details/123201972