# Identity, Permissions, and Privilege Escalation

> Master Linux Discretionary Access Control (DAC). Decode file permissions, understand special bits like SUID, and learn how attackers exploit misconfigurations and sudo rules to escalate privileges to root.

Canonical: https://codelivly.com/rooms/identity-permissions-and-privilege-escalation
Last updated: 2026-07-04

| | |
|---|---|
| Level | Beginner |
| Category | Cybersecurity |
| Lessons | 3 |
| Estimated time | 30 min |
| XP | 200 |

Dive into the core of Linux security and the most common vectors for Local Privilege Escalation (LPE). The Identity, Permissions, and Privilege Escalation module breaks down how Linux manages users, groups, and file access.

You will learn to decode standard rwx permissions, understand the dangerous implications of SUID and SGID bits, and parse the sudoers file. By the end of this module, you will know how to hunt for world-writable files, exploit misconfigured binaries using GTFOBins, and understand how Mandatory Access Control (SELinux/AppArmor) acts as the final line of defense.

## Lessons

1. Users, Groups, and Standard Permissions (30 min)
2. Special Permissions: SUID, SGID, and the Stic (30 min)
3. The sudoers File & MAC Frameworks (30 min)

## Related

- [Learning path: Linux Fundamentals for Cybersecurity](https://codelivly.com/learning-paths/linux-fundamentals-for-cybersecurity)
- [All rooms](https://codelivly.com/rooms)