#!/usr/bin/env python3

"""
Project: BRS-KB (BRS XSS Knowledge Base)
Company: EasyProTech LLC (www.easypro.tech)
Dev: Brabus
Date: 2025-12-27 UTC
Status: Created
Telegram: https://t.me/EasyProTech

SharedArrayBuffer Context - Data Module
"""

DESCRIPTION = """
SharedArrayBuffer allows sharing memory between JavaScript contexts.
When user input is used unsafely with SharedArrayBuffer, it can lead to
XSS attacks through memory manipulation or buffer overflow techniques.

Vulnerability occurs when:
- Buffer size is user-controlled
- Buffer content is user-controlled
- Buffer is shared with untrusted origins
- Memory operations use unsanitized input
- Buffer manipulation leads to code execution

Common injection points:
- SharedArrayBuffer constructor size
- TypedArray views of SharedArrayBuffer
- postMessage with SharedArrayBuffer
- Worker communication with buffers
- Memory manipulation operations
"""

ATTACK_VECTOR = """
1. Buffer size injection:
   const buffer = new SharedArrayBuffer(USER_INPUT);

2. Buffer content injection:
   const view = new Uint8Array(buffer);
   view.set(USER_INPUT);

3. postMessage injection:
   worker.postMessage({buffer: USER_INPUT});

4. TypedArray manipulation:
   const arr = new Int32Array(USER_INPUT);

5. Memory corruption:
   // Buffer overflow leading to code execution
   buffer[USER_INPUT] = value;
"""

REMEDIATION = """
1. Never allow user input in buffer sizes
2. Validate all buffer operations
3. Sanitize buffer content
4. Use Content Security Policy
5. Require Cross-Origin-Isolated context
6. Audit all SharedArrayBuffer usage
7. Validate buffer sharing
8. Test buffer operations thoroughly
"""
