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

Source

https://github.com/zeronetworks/zerologon

Associated 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.

Description

Test script for CVE-2020-1472 for both RPC/TCP and RPC/SMB

Readme

# Zerologon test for SMB & RPC
A python script based on [SecuraBV script](https://github.com/SecuraBV/CVE-2020-1472). 

Demonstrates that CVE-2020-1472 can be done via RPC/SMB, and not only over RPC/TCP.

Additionaly, there is a random byte in the final client challange & client credential - to test against trivial IDS signatures.
The RPC/SMB scan runs by default. Depending on the target server, some may require a valid authenticated user to get permission to the netlogon pipe.

# Execution
```python
usage: zerologon_test.py [-h] [-u] [-d] [-p] [-t] [-pp] dc_name dc_ip

Perform zerologon test over RPC/TCP or RPC/SMB

positional arguments:
  dc_name               NetBIOS name of the domain controller
  dc_ip                 ip address of the domain controller

optional arguments:
  -h, --help, /?, /h, /help
                        show this help message and exit
  -u , --user           authenticated domain user,may be required for SMB
  -d , --domain         domain name, required only when authentication over SMB
  -p , --pass           authenticated domain user's password, may be required for SMB
  -t , --type           rpc or smb scan. choices: [smb, rpc], (default: 'smb').
  -pp, --privacy        if exists adds packet privacy

```

File Snapshot


 [4.0K]  /data/pocs/cb161ddc3f84428f4dd589e4caa35f790d94468a
├── [1.0K]  LICENSE
├── [1.2K]  README.md
├── [ 289]  requirements.txt
└── [4.9K]  zerologon.py

0 directories, 4 files

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