CVE-2025-31161 PoC — CrushFTP 安全漏洞

Source

https://github.com/TX-One/CVE-2025-31161

Associated Vulnerability

Title:CrushFTP 安全漏洞 (CVE-2025-31161)
Description:CrushFTP 10 before 10.8.4 and 11 before 11.3.1 allows authentication bypass and takeover of the crushadmin account (unless a DMZ proxy instance is used), as exploited in the wild in March and April 2025, aka "Unauthenticated HTTP(S) port access." A race condition exists in the AWS4-HMAC (compatible with S3) authorization method of the HTTP component of the FTP server. The server first verifies the existence of the user by performing a call to login_user_pass() with no password requirement. This will authenticate the session through the HMAC verification process and up until the server checks for user verification once more. The vulnerability can be further stabilized, eliminating the need for successfully triggering a race condition, by sending a mangled AWS4-HMAC header. By providing only the username and a following slash (/), the server will successfully find a username, which triggers the successful anypass authentication process, but the server will fail to find the expected SignedHeaders entry, resulting in an index-out-of-bounds error that stops the code from reaching the session cleanup. Together, these issues make it trivial to authenticate as any known or guessable user (e.g., crushadmin), and can lead to a full compromise of the system by obtaining an administrative account.

Description

CrushFTP CVE-2025-31161 Exploit Tool 🔓

Readme

# CrushFTP CVE-2025-31161 Exploit Tool 🔓
**Advanced detection and exploitation tool for CVE-2025-31161 vulnerability in vulnerable CrushFTP versions.**
-----


`CVE-2025-31161` is a critical authentication bypass vulnerability in the CrushFTP Web Interface. By manipulating the HTTP Authorization header, an unauthenticated attacker can gain full access under any valid username without supplying the correct password.

Affected Versions

CrushFTP 9.3.8

CrushFTP 9.3.9

CrushFTP 9.3.10

CrushFTP 9.3.11

CrushFTP 9.3.12

CrushFTP Enterprise versions before 9.3.12.5


## Key Features 🚀

- Automatic CrushFTP version detection and vulnerability verification
- Multi-threaded credential testing for rapid user enumeration
- Dual authentication method support (Bearer Token & Basic Auth)
- JSON report generation with session cookies
- Smart connection retry mechanisms with custom configurations
- Colorized console output with detailed logging
- Vulnerable version coverage:
  - 9.3.8 through 9.3.12.5

 ## Requirements 📋

- Python 3.8+
- Required packages:
  ```bash
  pip install requests colorama urllib3
  ```

  ## Installation 🛠️

1. Install dependencies:
  ```bash
   pip install requests colorama urllib3
   ```
2. Clone repository:
  ```bash
   git clone https://github.com/TX-One/CVE-2025-31161.git
   cd CVE-2025-31161
   python3 tx-crush.py -h
   ```

## Usage 🖥️

### Basic Command:
```
python3 CVE-2025-31161.py -t https://target:8080 -u users.txt -o results.json
```
### Options:
```
-h, --help            show this help message and exit
  -t, --target TARGET   Target URL (e.g., https://example.com:8080)
  -u, --users USERS     File containing username list
  -o, --output OUTPUT   Output JSON file
  -T, --threads THREADS
                        Number of threads (default: 5)
  --no-ssl              Disable SSL verification
  --timeout TIMEOUT     Request timeout (default: 15)
  --retries RETRIES     Number of retries (default: 3)
  --force               Bypass version check
```
### Advanced Example:
```bash
python3 exploit.py
  -t https://vulnerable-server.com:8000
  -u ./wordlists/common_users.txt
  -o ./results/compromised.json
  -T 10
  --retries 5
  --timeout 20
```

## Output Sample 📄

```json
[
  {
    "target": "https://victim:8080",
    "user": "admin",
    "success": true,
    "method": "Bearer",
    "cookies": {"sessionID": "a1b2c3..."},
    "server_version": "CrushFTP/9.3.12"
  }
]
```
```json
[
  {
        "target": "http://victim:8080",
        "user": "admin",
        "success": false
    }
]
```
**Disclaimer:** This project is for educational and security research purposes only. Responsible usage required.

File Snapshot

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