CVE-2025-32463 PoC — Sudo 安全漏洞

Description

Proof of Concept for CVE-2025-32463 Local privilege escalation exploit targeting sudo -R on vulnerable Linux systems. For educational and authorized security testing only.

介绍

# CVE-2025-32463 – Privilege Escalation via Sudo chroot

## 📝 Overview

**CVE-2025-32463** is a local privilege escalation vulnerability affecting the `sudo` utility.  
It allows a regular user to escalate privileges to root by exploiting the `-R` option (which sets a custom runtime root directory) together with manipulated NSS configurations.

- **CVE:** CVE-2025-32463  
- **Component:** sudo  
- **Impact:** Local Privilege Escalation (root)  
- **Discovered by:** Rich Mirch

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## 🚨 Risk & Impact

A successful exploit gives a low-privileged local user full root access, completely breaching the system security boundary.

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## 🔬 Testing the Exploit

### Usage Example

```bash
git clone https://github.com/FreeDurok/CVE-2025-32463-PoC.git
cd CVE-2025-32463-PoC

# Check current user privileges
id

# Run the exploit
./escalate.sh

# Verify escalated privileges
id
```

![Privilege escalation demo](.img/poc.gif)


## 📌 Affected Versions
✅ Patched: sudo 1.9.17p1 and newer

🚩 Vulnerable: sudo 1.9.14 up to 1.9.17

🕗 Not impacted: Versions before 1.9.14 (the -R feature did not exist)

## 🔒 Mitigation & Hardening
Upgrade to sudo 1.9.17p1 or later.

Consider limiting or auditing the use of sudo -R through configuration policies.

Use security modules like SELinux or AppArmor to restrict unexpected sudo operations.

### References

- [Rick Mirch blog](https://blog.mirch.io/sudo-elevation-of-privilege-vulnerabilities/)
- [NVD Entry for CVE-2025-32463](https://nvd.nist.gov/vuln/detail/CVE-2025-32463)
- [Stratascale Security Research](https://www.stratascale.com/vulnerability-alert-CVE-2025-32463-sudo-chroot)


## ⚠️ Legal Notice
This repository is provided for authorized security testing and educational purposes only.
Executing these scripts on systems without explicit permission is illegal and violates ethical standards.

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