Linux Privilege Escalation: SUID Binaries

This intermediate-level lab focuses on Linux privilege escalation through SUID binary exploitation. You’ll learn systematic approaches to identifying and exploiting misconfigured SUID binaries.

Objectives

• Understand SUID bit functionality and security implications
• Learn enumeration techniques for privilege escalation
• Practice exploiting common SUID binaries
• Develop systematic privilege escalation methodology

Prerequisites

• Solid understanding of Linux file permissions
• Basic command line proficiency
• Understanding of user and group concepts in Linux

Lab Environment

A Linux virtual machine with intentionally misconfigured SUID binaries and various privilege escalation vectors.

Key Topics Covered

1. SUID Binary Enumeration

   • Finding SUID binaries with find command
   • Analyzing binary capabilities
   • Identifying exploitation opportunities

2. Common SUID Exploits

   • Text editors (vim, nano)
   • System utilities (cp, mv, find)
   • Custom applications

3. Exploitation Techniques

   • Command injection
   • Path manipulation
   • Library hijacking

Getting Started

Begin with thorough system enumeration and work systematically through potential privilege escalation vectors.