CVE-2025-48827 PoC — Internet Brands vBulletin 安全漏洞

Description

This repository contains a proof-of-concept exploit for CVE-2025-48827, a critical authentication bypass vulnerability affecting vBulletin 5.0.0–5.7.5 and 6.0.0–6.0.3 when running on PHP 8.1 or later. The vulnerability allows unauthenticated attackers to invoke protected API methods remotely.

介绍

# CVE-2025-48827 - vBulletin Authentication Bypass Exploit

## Overview
This repository contains a proof-of-concept exploit for CVE-2025-48827, a critical authentication bypass vulnerability affecting vBulletin 5.0.0–5.7.5 and 6.0.0–6.0.3 when running on PHP 8.1 or later. The vulnerability allows unauthenticated attackers to invoke protected API methods remotely, potentially leading to remote code execution and full system compromise.

- **Author:** pszyszkowski
- **Severity:** Critical
- **CVE:** [CVE-2025-48827](https://nvd.nist.gov/vuln/detail/CVE-2025-48827)
- **References:**
  - https://karmainsecurity.com/dont-call-that-protected-method-vbulletin-rce

## Impact
Successful exploitation allows unauthenticated remote attackers to execute arbitrary system commands as the web server user, resulting in full system compromise.

## Requirements
- Python 3.7+
- `requests` library
- `colored` library
- `pyfiglet` library

Install dependencies:
```bash
pip install requests colored pyfiglet
```

## Usage
Prepare a text file (e.g., `targets.txt`) with one target URL per line:
```
http://example.com
https://forum.example.org
```

Run the exploit:
```bash
python main.py targets.txt
```

Optional: Set a custom timeout (default is 10 seconds):
```bash
python main.py targets.txt --timeout 20
```

## How It Works
- Checks if the target is running vBulletin by looking for common indicators.
- Sends a crafted unauthenticated request to `/ajax/api/ad/wrapAdTemplate`.
- Confirms exploitation by checking for specific patterns in the JSON response.
- Reports vulnerable targets and provides remediation advice.

## Remediation
- Upgrade to vBulletin 6.0.4+ before upgrading to PHP 8.1.
- Apply the latest security patches.

## Disclaimer
This tool is for educational and authorized security testing purposes only. Do not use against systems without explicit permission.

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