sudo chroot Privilege Escalation Vulnerability

漏洞信息

漏洞名称： sudo chroot Privilege Escalation Vulnerability

漏洞编号：

• CVE： CVE-2025-32463

漏洞类型： 权限提升

漏洞等级： 高危

漏洞描述： 该漏洞CVE-2025-32463影响Linux系统中的sudo命令，特别是与chroot命令结合使用时。sudo是一个广泛使用的程序，允许系统管理员授权特定用户以root或其他用户身份运行命令，而无需知道root密码。chroot命令则用于改变当前运行进程及其子进程的根目录。此漏洞的根源在于sudo与chroot交互时的不当验证，使得攻击者可以通过精心构造的命令操纵环境，从而获得提升的权限。

受影响产品：此漏洞主要影响使用sudo与chroot结合的Linux系统，包括但不限于Ubuntu等发行版。sudo作为Linux系统中的核心组件，其安全性直接关系到整个系统的安全。

漏洞解释：漏洞类型为权限提升，技术原因是sudo在处理chroot命令时未能正确验证用户输入，导致攻击者可以利用这一缺陷绕过正常的权限检查机制，执行任意命令作为root用户。这种漏洞的存在使得攻击者可以在不需要gcc编译器的情况下，通过简单的脚本即可实现权限提升。

影响分析：成功利用此漏洞的攻击者可以完全控制系统，执行任意命令，包括但不限于安装恶意软件、查看、修改或删除敏感数据、创建新账户等。由于此漏洞不需要复杂的工具链支持，且攻击脚本易于获取和执行，因此其潜在的安全风险非常高。此外，由于sudo的广泛使用，受影响的系统范围可能非常广泛，特别是在多用户环境或服务器上，这种漏洞的利用可能导致严重的安全事件。

产品厂商： Ubuntu, Other Linux distributions

产品名称： sudo

来源： https://github.com/92gmuz/CVE-2025-32463

类型： CVE-2025:github search

仓库文件

• .gitignore
• LICENSE
• README.md
• archs-dynamic
• archs-static
• get_root.py
• get_root.sh
• mkall-dynamic.sh

来源概述

CVE-2025-32463: Privilege Escalation to Root via sudo chroot

Overview

CVE-2025-32463 is a vulnerability that allows a user to escalate privileges to root on Linux systems. This occurs through the misuse of the sudo chroot command. This exploit does not require the gcc compiler to be installed, making it accessible to a broader range of users.

Table of Contents

• Vulnerability Details
• Exploit Information
• Usage
• Installation
• Contributing
• License
• Links

Vulnerability Details

This vulnerability stems from improper validation in the sudo command when used with chroot. The chroot command changes the apparent root directory for the current running process and its children. If not handled correctly, it can allow a user to gain unauthorized access to the root directory, thereby escalating their privileges.

Affected Systems

• Ubuntu
• Other Linux distributions using sudo with chroot

Impact

Successful exploitation of this vulnerability allows a user to execute commands as the root user, which can lead to complete system compromise.

Exploit Information

The exploit leverages the way sudo interacts with chroot. By crafting specific commands, an attacker can manipulate the environment to gain elevated privileges.

Proof of Concept (PoC)

The repository includes a proof of concept that demonstrates how this vulnerability can be exploited. You can find the necessary files to download and execute here.

Topics Covered

• chroot
• CVE-2025-32463
• Exploit
• Linux
• PoC
• Privilege Escalation
• Root Access
• Sudo
• Ubuntu
• Vulnerability

Usage

To use the exploit, follow these steps:

1. Download the exploit files from the Releases section.
2. Extract the files to your desired directory.
3. Run the script as a user with sudo privileges.

Make sure to understand the implications of running such scripts on your system. This should only be performed in a controlled environment for educational purposes.

Installation

Prerequisites

• A Linux-based operating system
• sudo access
• Basic knowledge of command-line operations

Steps to Install

1. Clone the repository:

   git clone https://github.com/92gmuz/CVE-2025-32463.git

2. Navigate to the directory:

   cd CVE-2025-32463

3. Follow the instructions in the README.md file to set up the environment.

Contributing

Contributions are welcome. If you find a bug or have a feature request, please open an issue. For code contributions, please fork the repository and submit a pull request.

How to Contribute

1. Fork the repository.
2. Create a new branch for your feature or bug fix.
3. Make your changes.
4. Submit a pull request detailing your changes.

License

This project is licensed under the MIT License. See the LICENSE file for more details.

Links

For more information, please visit the Releases section to download the necessary files and execute the exploit.

Additional Resources

• Sudo Manual

Community

Join discussions on platforms like Reddit and Stack Overflow. Share your findings and collaborate with others interested in security and vulnerabilities.

Acknowledgments

Special thanks to the security researchers who reported this vulnerability and contributed to its disclosure.

Disclaimer

This repository is for educational purposes only. Use it responsibly and only in environments where you have permission to test.