CVE-2025-32463 PoC — Sudo 安全漏洞

Description

PoC for CVE-2025-32463: Local privilege escalation in sudo via --chroot. Exploits NSS module injection through crafted chroot environments. Designed for security researchers and lab-only environments.

Readme

# CVE-2025-32463_Sudo_PoC
PoC for CVE-2025-32463: Local privilege escalation in sudo via --chroot. Exploits NSS module injection through crafted chroot environments. Designed for security researchers and lab-only environments.

# CVE-2025-32463 - Local Privilege Escalation via `sudo --chroot`

> A Python-based proof-of-concept exploit for CVE-2025-32463 — a local privilege escalation vulnerability in `sudo` (v1.9.14 - v1.9.17).  
> This exploit leverages the insecure `--chroot` option in `sudo` and malicious NSS resolution to execute code as `root`.

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## ⚠️ Disclaimer

This code is provided **strictly for educational and research purposes only**.  
**Do NOT use on production systems** or without explicit authorization.  
You are solely responsible for complying with applicable laws and policies.

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## 📖 Vulnerability Overview

**CVE-2025-32463** is a local privilege escalation flaw in `sudo`, introduced by its `--chroot` (`-R`) functionality.  
If a user is allowed to invoke `sudo` with the `-R` flag, they can:

- Create a custom chroot environment
- Inject a fake `nsswitch.conf`
- Load malicious `libnss_Xfiles.so.2`
- Trigger a constructor payload when `sudo` resolves user info — running code as `root`

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## 🧰 Requirements

- Python 3
- `gcc` (for compiling the shared object payload)
- A vulnerable `sudo` binary (v1.9.14 ≤ version < v1.9.17p1)
- A system where `sudo` allows the use of `--chroot` (e.g., via `sudoers`)

Tested on:
- Ubuntu 22.04
- CentOS 8.4 (with downgraded `sudo`)
- Debian 11

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## 🚀 Usage

```bash
git clone https://github.com/yourhandle/CVE-2025-32463-poc.git
cd CVE-2025-32463-poc
python3 exploit.py [-v]

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