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Labs / LDAP Injector

  • Daily Challenge
  • Released 03 Sep 2025

🔐 Can you bypass enterprise authentication using directory manipulation?

A corporate employee portal relies on LDAP directory services for secure authentication, implementing enterprise-grade access controls. But when user input meets insufficient query sanitization, even the most trusted directory systems can become gateways to unauthorized access. 🎯 Time to test your directory injection skills against real-world authentication mechanisms!

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Daily Challenge

🔐 LDAP Injection & Authentication Bypass

LDAP (Lightweight Directory Access Protocol) injection is a critical vulnerability that occurs when user input is improperly sanitized before being used in LDAP queries. This challenge teaches you how to identify and exploit LDAP injection vulnerabilities in enterprise authentication systems.

🎯 What You'll Learn
  • ✓ LDAP filter syntax and structure
  • ✓ LDAP injection attack techniques
  • ✓ Authentication bypass methods
  • ✓ Directory service exploitation
  • ✓ Enterprise security assessment
🔍 Challenge Overview

You'll encounter a corporate employee portal that uses LDAP for authentication. The application implements standard login functionality but contains a critical vulnerability in how it constructs LDAP search filters from user input.

Penetration Testing Context: LDAP injection vulnerabilities are commonly found in enterprise applications, Active Directory integrations, and corporate authentication systems where user credentials are validated against directory services.