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CVE-2024-3183 PoC — Freeipa: user can obtain a hash of the passwords of all domain users and perform offline brute force

Source
https://github.com/Cyxow/CVE-2024-3183-POC
Associated Vulnerability
Title:Freeipa: user can obtain a hash of the passwords of all domain users and perform offline brute force (CVE-2024-3183)
Description:A vulnerability was found in FreeIPA in a way when a Kerberos TGS-REQ is encrypted using the client’s session key. This key is different for each new session, which protects it from brute force attacks. However, the ticket it contains is encrypted using the target principal key directly. For user principals, this key is a hash of a public per-principal randomly-generated salt and the user’s password. If a principal is compromised it means the attacker would be able to retrieve tickets encrypted to any principal, all of them being encrypted by their own key directly. By taking these tickets and salts offline, the attacker could run brute force attacks to find character strings able to decrypt tickets when combined to a principal salt (i.e. find the principal’s password).
Description
POC for CVE-2024-3183 (FreeIPA Rosting)
Readme
# CVE-2024-3183-POC
POC for CVE-2024-3183 (FreeIPA Rosting)

Impact:
A low-privileged user can obtain a hash of the passwords of all domain users and perform offline brute force (kerberoasting).

## POC:
1) First, let's request a TGT ticket for an already compromised user "admin".
![foto1](https://github.com/user-attachments/assets/c7935c7f-d978-4e34-b309-eba1c2d9c7db)
2) Secondly, we will find out the salt of the "admin" user:
![foto2](https://github.com/user-attachments/assets/32a7b926-ed49-4a4f-81b6-91e06a86c04a)
3) Get TGS for "admin":

![foto](https://github.com/user-attachments/assets/71f31595-ca1b-492d-8ef4-98071c11e85b)
![foto3](https://github.com/user-attachments/assets/6b4bcc3a-3b2d-4b5f-abf9-dd69853b844c)
5) Use python script (or hashcat mod 19800 with specific salt) for brute force TGS
![foto4](https://github.com/user-attachments/assets/6fb2983a-cd93-4858-8f87-93cde0a7c20e)

1 - TGS,
2 - SALT,
3 - Passwords.

5) Congratulations, we now have the user password “admin”.
File Snapshot

 [4.0K]  /data/pocs/47e3d22332e6bf3433bf8befcbf7ecc05d8b1a60
├── [ 26K]  crypto.py
├── [3.2K]  main.py
└── [ 998]  README.md

0 directories, 3 files
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