Sploitus

Exploit for CVE-2026-81578 CVE-2026-81578 CVE-2026-82078

githubexploit · 2026-08-29

Exploit Code

README276 lines
## https://sploitus.com/exploit?id=22CCF182-BE84-5BBC-B569-DA25837A73B7
> **Professional security research tool for PaperCut NG/MF vulnerability assessment & authorized exploitation**

```
╔══════════════════════════════════════════════════════════════════╗
║              PAPERCUT SECURITY TOOL – POWER MODE                ║
║         CVE-2026-81578 · CVE-2026-82078 · v3.1.0               ║
║                   ⚡ powered by yora 1928 ⚡                     ║
╚══════════════════════════════════════════════════════════════════╝
```

[![Python 3.10+](https://img.shields.io/badge/python-3.10+-blue.svg)](https://www.python.org/downloads/)
[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
[![Status: Production](https://img.shields.io/badge/Status-Stable-brightgreen.svg)]()
[![CVEs](https://img.shields.io/badge/CVE--2026--81578-HIGH-red)]()
[![CVEs](https://img.shields.io/badge/CVE--2026--82078-CRITICAL-orange)]()

---

## 📋 Overview

This tool provides **safe, non‑destructive vulnerability assessment** and **optional remote exploitation** (with explicit authorization) for PaperCut NG/MF servers.  
It is designed for **security researchers, penetration testers, and blue‑team defenders** who need to validate the presence of two critical PaperCut vulnerabilities.

| CVE ID | Description | CVSS | CWE |
|--------|-------------|------|-----|
| **CVE-2026-81578** | Authentication Bypass via Apache Tapestry "complex direct" requests | 8.8 (HIGH) | CWE-306 |
| **CVE-2026-82078** | Unsafe Dynamic Class Loading in Database Connection Utilities | 9.4 (CRITICAL) | CWE-470 |

**Key references:**
- [Rapid7 – PaperCut NG/MF Critical Zero‑Day Exploited in the Wild](https://www.rapid7.com/blog/post/etr-papercut-ng-mf-critical-zero-day-exploited-in-the-wild/)
- [IONIX – CVE-2026-81578 Deep Dive](https://www.ionix.io/threat-center/cve-2026-81578/)
- [VulDB – CVE-2026-81578](https://vuldb.com/cve/CVE-2026-81578) / [CVE-2026-82078](https://vuldb.com/cve/CVE-2026-82078)
- [PaperCut Security Bulletin – August 27, 2026](https://www.papercut.com/kb/Main/security-bulletin-27-aug-2026-urgent-security-advisory/)

---

## ⚠️ Important: Accuracy & Responsible Disclosure

This tool performs **indicator‑based remote detection**. It **does not** claim to prove exploitability on real PaperCut servers unless `--force` is used **with explicit written authorization**.

| Status | Meaning |
|--------|---------|
| `SAFE` | Version is fixed or no indicators detected |
| `AFFECTED_VERSION` | Version matches the affected range (vendor advisory) |
| `TAPESTRY_DETECTED` | Apache Tapestry framework detected (used by PaperCut) |
| `ADMIN_ENDPOINT_ACCESSIBLE` | Administrative endpoints are accessible without auth |
| `DB_CONFIG_ACCESSIBLE` | Database configuration endpoints are accessible |
| `POTENTIALLY_VULNERABLE` | Combination of indicators suggests possible vulnerability, but **exploitability is not verified** |
| `NOT_DETECTABLE` | Insufficient information to assess |

> Confidence scores are calculated based on the weight of evidence and are **capped at 85%** for remote detection to avoid over‑claiming.

---

## 🚀 Features

- ✅ **Fingerprinting** – detect PaperCut version, Apache Tapestry framework, and exposed endpoints
- ✅ **Indicator‑based CVE Assessment** – safe, non‑destructive checks with honest status reporting
- ✅ **Educational Local Lab** – reproduces vulnerability concepts in a controlled environment
- ✅ **Remote Exploitation** – with `--force` flag (**authorization required**)
- ✅ **Batch Scanning** – process multiple targets with multi‑threading (`--input`, `--threads`)
- ✅ **Port Prefilter** – quickly check open ports before deep scanning (`--prefilter`)
- ✅ **Log Detection** – IOC‑based analysis for suspicious activity patterns
- ✅ **Professional Reporting** – HTML, JSON, and text formats with detailed evidence
- ✅ **Interactive Mode** – menu‑driven interface for ease of use
- ✅ **Self‑Test** – verifies tool functionality and dependencies

---

## 🛡️ Security Boundaries

| Feature | Against Real Target | Against Local Lab |
|---------|---------------------|-------------------|
| Fingerprinting | ✅ Safe (read‑only) | ✅ Safe |
| CVE Assessment | ✅ Safe (indicator‑based) | ✅ Safe |
| Concept Demonstration | ❌ **BLOCKED** (localhost only) | ✅ Allowed |
| Remote Exploitation | ⚠️ **Requires `--force` & authorization** | ✅ Allowed |
| Configuration Changes | ❌ Never | ✅ Only within lab |
| RCE / Payload Execution | ❌ Never | ❌ **Not implemented** (simulated only) |

---

## 📦 Installation

```bash
# Clone the repository
git clone https://github.com/yourusername/papercut-cve-tool.git
cd papercut-cve-tool

# Create virtual environment
python3 -m venv .venv
source .venv/bin/activate          # Linux/macOS
# or
.venv\Scripts\activate              # Windows

# Install dependencies
pip install -r requirements.txt

# Verify installation
python papercut.py self-test
```

---

## 🔧 Quick Start

```bash
# Show help
python papercut.py --help

# Run a full scan against a target
python papercut.py scan http://127.0.0.1:8080

# Fingerprint only
python papercut.py fingerprint http://127.0.0.1:8080

# Check a specific CVE
python papercut.py check http://127.0.0.1:8080 --cve 81578

# Start the educational local lab
python papercut.py lab

# Run concept demonstration (lab only)
python papercut.py exploit --cve 81578

# Remote exploit (AUTHORIZATION REQUIRED)
python papercut.py exploit --cve 81578 --target https://target.com:9192 --force

# Batch scan with prefilter and threading
python papercut.py scan --input targets.txt --prefilter --threads 10 --timeout 5

# Analyze log file for IOCs
python papercut.py detect server.log

# Generate HTML report
python papercut.py report result.json --format html

# Interactive menu
python papercut.py interactive
```

---

## 📖 CLI Commands

| Command | Description |
|---------|-------------|
| `scan TARGET` | Full vulnerability scan with fingerprinting + CVE checks |
| `fingerprint TARGET` | Detect PaperCut version, Tapestry framework, and exposed endpoints |
| `check TARGET --cve {81578,82078}` | Run a specific CVE indicator check |
| `lab [--port PORT] [--test]` | Start the educational local lab (with optional self‑test) |
| `exploit --cve {81578,82078} [--target] [--force]` | Run concept demonstration or remote exploit (if authorized) |
| `detect LOGFILE [--output]` | Analyse log file for suspicious indicators |
| `report INPUT [--format {html,json,text}] [--output]` | Generate professional report from JSON results |
| `interactive` | Launch interactive menu |
| `self-test` | Run internal diagnostics |

### Global Options

| Option | Description |
|--------|-------------|
| `--timeout N` | Request timeout in seconds (default: 10) |
| `--verbose` | Show detailed debug output |
| `--quiet` | Suppress non‑essential output |
| `--output FILE` | Save results to file |
| `--format {text,json,html}` | Output format for scan/report |

### Batch & Prefilter Options

| Option | Description |
|--------|-------------|
| `--input FILE` | File with targets (one per line) for batch scanning |
| `--output-dir DIR` | Directory to save batch results |
| `--threads N` | Number of concurrent threads (batch mode) |
| `--prefilter` | Check open ports before scanning (batch only) |

---

## 🧪 Educational Local Lab

The lab is a minimal Python HTTP server that reproduces the **concepts** of both vulnerabilities for educational purposes.

### CVE-2026-81578 – Tapestry "Complex Direct" Bypass
- Invokes an administrative component (`ConfigEditor`, `UserList`) while displaying a public page (`Error.page`, `Exception.page`)
- Demonstrates how authentication checks apply only to the displayed page, not the invoked component

### CVE-2026-82078 – Unsafe Class Loading
- Instantiates a JDBC driver class from a user‑supplied name without allowlist validation
- Shows how arbitrary class names could be loaded, potentially leading to RCE

```bash
# Start the lab
python papercut.py lab

# Run automated lab test
python papercut.py lab --test
```

**Lab endpoints:**
- `http://127.0.0.1:8080/lab/cve-81578?component=ConfigEditor&display=Error`
- `http://127.0.0.1:8080/lab/cve-82078?driver=org.attacker.RCEPayload`

---

## 📊 Log Detection

The tool analyses log files for suspicious indicators (IOCs) derived from the vulnerability mechanics:

| Indicator | Severity | Description |
|-----------|----------|-------------|
| `tapestry_complex_direct` | CRITICAL | Tapestry `.page.*.zone` request pattern |
| `admin_component_access` | HIGH | ConfigEditor / UserList page access |
| `public_page_tapestry` | HIGH | Error / Exception page with Tapestry |
| `tapestry_post_request` | CRITICAL | POST request to Tapestry `.page` |
| `db_driver_config` | CRITICAL | Database driver configuration changes |
| `class_loading_error` | HIGH | ClassNotFoundException / NoClassDefFoundError |
| `dynamic_class_loading` | CRITICAL | Loading class from external source |

```bash
python papercut.py detect /var/log/papercut/server.log --output detection.json
```

---

## 📝 Report Generation

Generate professional reports in HTML, JSON, or plain text.

```bash
# First, save scan results as JSON
python papercut.py scan http://127.0.0.1:8080 --format json --output result.json

# Generate HTML report
python papercut.py report result.json --format html --output report.html

# Generate JSON report
python papercut.py report result.json --format json --output report.json

# Generate text report
python papercut.py report result.json --format text --output report.txt
```

**HTML report includes:**
- Executive summary with target and fingerprint details
- CVE findings with status, confidence, indicators, and evidence
- Technical details and remediation recommendations
- Methodology and limitations disclaimer

---

## 📁 Affected Versions

Based on PaperCut Security Bulletin (August 27, 2026):

| Version Range | Status |
|---------------|--------|
| 24.x  *“Security is not a product, but a process.” – Bruce Schneier*
```

---

## 🚀 Langkah Selanjutnya di GitHub

1. **Buka** `https://github.com/yora1928/PaperCut-CVE-2026-81578-82078`
2. **Klik** `README.md`
3. **Klik** icon pensil (Edit)
4. **Hapus** semua isi yang lama
5. **Paste** seluruh teks di atas
6. **Klik** `Commit changes...`
7. **Tulis** pesan commit: `Update README.md with final version`
8. **Klik** `Commit changes`

---

## 🎉 **Selesai! Project Anda sudah profesional dan siap untuk portfolio!** ⚡