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。
介绍
# CVE-2022-0847-dirty-pipe-checker
Bash script to check for CVE-2022-0847
[Dirty Pipe](https://dirtypipe.cm4all.com/)
<img src="https://f.hubspotusercontent-eu1.net/hubfs/25393921/dirty_pipe_option_2.png">
## Abstract
This is the story of CVE-2022-0847, a vulnerability in the Linux kernel since 5.8 which allows overwriting data in arbitrary read-only files. This leads to privilege escalation because unprivileged processes can inject code into root processes.
It is similar to CVE-2016-5195 “Dirty Cow” but is easier to exploit.
The vulnerability was fixed in Linux 5.16.11, 5.15.25 and 5.10.102.
# How to use it
## First
```
git clone https://github.com/muhammad1596/CVE-2022-0847-dirty-pipe-checker.git
```
## Second
```
cd CVE-2022-0847-dirty-pipe-checker
```
## Third
```
chmod +x dpipe.sh
```
## Finally
Check current kernel version
```
./dpipe.sh
```
Check specific kernel version
```
./dpipe.sh 5.10.11
```
文件快照
[4.0K] /data/pocs/939328ec462907c33d21ce3584e02334c7b1494c
├── [ 1] dirty-pipe-checker.sh
├── [1.8K] dpipe.sh
├── [ 932] README.md
└── [ 970] test.sh
0 directories, 4 files
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