关联漏洞
标题：
Linux kernel 安全漏洞
(CVE-2022-0847)
描述：Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于新管道缓冲区结构的“flag”变量在 Linux 内核中的 copy_page_to_iter_pipe 和 push_pipe 函数中缺乏正确初始化。非特权本地用户利用该漏洞可以提升权限至root。以下产品和版本受到影响：Linux Kernel 5.8-5.16.11、5.8-5.15.25、5.8-5.10.102。
描述
This is a repo to showcase the dirty pipe Linux Kernel Vulnerability.
介绍
## DIRTY PIPE `CVE-2022-0847`
This is a kernel vulnerability that allows overwriting of data in
arbitrary read-only files, which can therefore lead to privilege escalation since an unprivileged
process can write into a privileged process. All credits go to 🥇[Max Kellermann](https://dirtypipe.cm4all.com/) for finding the vulnerability and his good explanation/description of the vulnerability.
#### 👻 IMPORTANT NOTICE
This proof of concept code is based on `Max Kellermann's` poc, that has been modified to explore some different
ways on how this vulnerability can be used to gain higher privileges. The exploit code includes a check to check if the kernel version is vulnerable and using the vulnerability to overwrite `/etc/passwd` file to gain root privileges. [exploit.c](dpipe.c)
### Usage
> You can download the already compiled binary or using `make` compile the binary locally and run it to gain `root`.
文件快照
[4.0K] /data/pocs/4854ed6d15b1c001b41e549a543fd67234dbb036
├── [301K] dirty_pipe.png
├── [ 18K] dpipe
├── [3.9K] dpipe.c
├── [ 137] Makefile
└── [ 956] README.md
0 directories, 5 files
备注
1. 建议优先通过来源进行访问。
2. 如果因为来源失效或无法访问，请发送邮箱到 f.jinxu#gmail.com 索取本地快照（把 # 换成 @）。
3. 神龙已为您对POC代码进行快照，为了长期维护，请考虑为本地POC付费，感谢您的支持。