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CVE-2000-0638 — bb-hostsvc.sh in Big Brother 1.4h1 and earlier allows remote attackers to read arbitrary…

Key facts

CVE-2000-0638 is a Critical (10.0) vulnerability: bb-hostsvc.sh in Big Brother 1.4h1 and earlier allows remote attackers to read arbitrary…. This entry ships a detection-only PoC and a Docker test lab.
CVE CVE-2000-0638
Severity Critical (10.0)
Detection / prevention —
PoC poc.py
Source 2000/CVE-2000-0638/

Details

English | 한국어

Description

bb-hostsvc.sh in Big Brother 1.4h1 and earlier allows remote attackers to read arbitrary files via a .. (dot dot) attack on the HOSTSVC parameter.

Vulnerability Details

Property Value
CVE ID CVE-2000-0638
CVSS Score 10.0

Proof of Concept

Download

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2000/CVE-2000-0638/poc.py

Usage

# Run PoC against target
python3 poc.py --target <TARGET_URL>

# With authentication
python3 poc.py --target <TARGET_URL> --username <USER> --password <PASS>

⚠️ Warning: This PoC is for authorized security testing only. It uses detection-only techniques and does not exploit or damage target systems.

Test Lab

This repository includes a Docker-based test environment with both vulnerable and patched applications.

Quick Start

# Clone and navigate to CVE directory
cd CVE-2000-0638

# Start both applications
docker-compose up -d

# Run tests
./run-tests.sh    # Linux/Mac
./run-tests.ps1   # Windows PowerShell

Application Endpoints

Application URL Status
Vulnerable App http://localhost:8080 Shows vulnerability
Patched App http://localhost:8081 Demonstrates fix

Directory Structure

├── README.md           # English documentation
├── README_KO.md        # Korean documentation
├── poc.py              # PoC detection script
├── docker-compose.yml  # Container orchestration
├── run-tests.sh        # Linux/Mac test runner
├── run-tests.ps1       # Windows test runner
├── vulnerable-app/     # Vulnerable version
│   ├── app.py
│   ├── Dockerfile
│   └── requirements.txt
└── patched-app/        # Fixed version
    ├── app.py
    ├── Dockerfile
    └── requirements.txt

References

  • http://archives.neohapsis.com/archives/bugtraq/2000-07/0146.html
  • http://archives.neohapsis.com/archives/bugtraq/2000-07/0147.html
  • http://bb4.com/README.CHANGES
  • http://www.securityfocus.com/bid/1455
  • https://exchange.xforce.ibmcloud.com/vulnerabilities/4879
  • http://archives.neohapsis.com/archives/bugtraq/2000-07/0146.html
  • http://archives.neohapsis.com/archives/bugtraq/2000-07/0147.html
  • http://bb4.com/README.CHANGES
  • http://www.securityfocus.com/bid/1455
  • https://exchange.xforce.ibmcloud.com/vulnerabilities/4879

Generated by PoC Generator on 2026-01-25T19:31:26.767730385

Frequently asked questions

What is CVE-2000-0638?

CVE-2000-0638 is a Critical (10.0) vulnerability: bb-hostsvc.sh in Big Brother 1.4h1 and earlier allows remote attackers to read arbitrary…. This entry ships a detection-only PoC and a Docker test lab.

How do I detect CVE-2000-0638?

Run the detection-only PoC included with this entry against your Docker test lab to confirm whether a target is affected; pair it with your own IDS logging.

How do I block or mitigate CVE-2000-0638?

Upgrade to a fixed version per the vendor advisory; the NVD record lists the affected versions. Use the included PoC to verify your remediation.

For authorized security testing and research only. See the full source and NVD record.