Exploit for CVE-2026-13768

## https://sploitus.com/exploit?id=569AE4F1-B9CB-54A2-9617-BE765E11B6A4
# CVE-2026-13768 - Gardyn IoT Hub Owner Key Exposure

> [!WARNING]
> **This repository contains a fully functional proof-of-concept for a high-severity IoT vulnerability.**  
> This code is provided **strictly for educational purposes, authorized security research, and defensive testing**.  
> 
> **Unauthorized use is illegal.** Testing or exploiting systems without explicit written permission from the owner violates the Computer Fraud and Abuse Act (CFAA), EU Cyber Resilience Act, and other applicable laws in your jurisdiction.  
> The authors assume **no liability** for any misuse, damage, or legal consequences resulting from this code.  
> Always operate within legal and ethical boundaries.

---

## Overview

CVE-2026-13768 exposes the IoT Hub owner-level connection string in the Gardyn smart garden system, allowing full administrative control over the Azure IoT Hub. This PoC demonstrates how an attacker with the owner key can achieve **remote code execution (RCE)** on connected devices via command injection in the `upgrade()` cloud-to-device method, enabling fleet-wide compromise.

The suite includes:
- A **passive validation** tool (`validate.py`)
- A **weaponized exploit** framework (`poc.py`)
- A lightweight **C2 server** for demonstration (`c2s.py`)

**This is a living research project** - use it responsibly to understand and defend against supply-chain and IoT cloud misconfigurations.

## Features

- **Passive Validation**: Safely verify owner key validity and enumerate devices without making changes
- **Fleet Enumeration**: List all devices registered to the IoT Hub
- **Remote Code Execution**: Inject commands via the `upgrade()` method (leveraging CVE-2025-29631 command injection)
- **Lateral Movement**: Example LAN scanning from a compromised device
- **Persistence**: Example techniques for maintaining access
- **OPSEC Features**: Payload obfuscation, operation logging, optional TLS bypass (lab use)
- **C2 Integration**: Simple command-and-control server for interactive sessions

## Directory Structure

```
.
├── poc.py              # Main weaponized exploitation script
├── validate.py         # Safe, read-only validation tool
├── c2s.py              # Lightweight C2 server for demos
├── README.md
```

## Dependencies

- Python 3.8+
- Azure IoT Hub SDK

## Installation

1. Clone the repository:
   ```bash
   git clone https://github.com/J4ck3LSyN-Gen2/CVE-2026-13768.git
   cd CVE-2026-13768
   python3 -m venv venv
   ```

2. Activate the virtual environment (or create one):
   ```bash
   source venv/bin/activate
   python3 -m pip install --upgrade pip
   ```

3. Install dependencies.
  ```bash
  python3 -m pip install azure-iot-hub
  ```

## Usage

### 1. Passive Validation (Strongly Recommended)

```bash
python validate.py --conn-str "HostName=yourhub.azure-devices.net;SharedAccessKeyName=iothubowner;SharedAccessKey=..."
```

**Exit code 0** = Valid owner key with accessible devices. No modifications are made.

### 2. Full Exploitation (Authorized Targets Only)

```bash
python poc.py \
  --mode exploit \
  --conn-str "HostName=..." \
  --device-id "target-device-123" \
  --command "whoami" \
  --lateral-scan \
  --persist
```

#### Key Arguments

| Argument          | Description                                      | Required |
|-------------------|--------------------------------------------------|----------|
| `--mode`          | `validate` or `exploit`                          | No (default: validate) |
| `--conn-str`      | IoT Hub owner connection string                  | Yes |
| `--device-id`     | Target device ID                                 | Yes (exploit mode) |
| `--command`       | Command to execute via `upgrade()` injection     | No (default: `id`) |
| `--lateral-scan`  | Enable LAN reconnaissance from device            | No |
| `--persist`       | Attempt persistence (e.g., cron, systemd)        | No |
| `--c2`            | Connect back to C2 server                        | No |

Run `python poc.py --help` for full options.

### 3. C2 Server (Demo)

```bash
python c2s.py --port 4444
```

## How It Works (Technical Summary)

1. **Key Validation** → Uses Azure IoT Hub SDK to authenticate as `iothubowner`
2. **Enumeration** → Retrieves device registry and twin data
3. **RCE Primitive** → Abuses command injection in the `upgrade()` direct method
4. **Post-Exploitation** → Optional lateral movement + persistence payloads
5. **Obfuscation** → Basic string encoding (easily extensible to AES/custom)

> **Note**: Lateral movement and persistence code are **illustrative placeholders**. Adapt them to your target device's OS and constraints (e.g., BusyBox-limited environments).

## OPSEC & Safety Considerations

- **Logging**: Writes to `/tmp/cve_2026_13768.log` by default. Replace with encrypted exfiltration in real engagements.
- **Obfuscation**: Extend the provided `obfuscate_cmd()` / `deobfuscate_cmd()` functions.
- **Testing**: **Always** test in an isolated lab environment first.
- **Cleanup**: Have rollback plans. The exploit can leave traces on devices.

## References

- [CISA Advisory ICSA-26-183-03](https://www.cisa.gov/news-events/ics-advisories/icsa-26-183-03)
- [Related CVE-2025-29631](https://www.cisa.gov/news-events/ics-advisories/icsa-26-055-03)
- Azure IoT Hub Documentation

## Contributing

Contributions welcome for:
- Improved obfuscation techniques
- Additional persistence methods
- Defensive detection rules
- Better C2 integration

Please open issues or PRs.

---

**With great power comes great responsibility.**