CVE-2021-22555 PoC — Linux kernel 缓冲区错误漏洞

Source

https://github.com/veritas501/CVE-2021-22555-PipeVersion

Associated Vulnerability

Title:Linux kernel 缓冲区错误漏洞 (CVE-2021-22555)
Description: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存在缓冲区错误漏洞，该漏洞源于net/netfilter/x_tables.c 中的堆越界写入。该漏洞允许攻击者通过用户名空间获得权限或引起 DoS。

Description

CVE-2021-22555 exploit rewritten with pipe primitive

Readme

# CVE-2021-22555 pipe version

Using pipe-primitive  to exploit CVE-2021-22555, so no kaslr leak nor smap smep ktpi bypass is needed :)

(Q: What is pipe-primitive?  A: https://github.com/veritas501/pipe-primitive)

Tested on both Linux 4.15 and Linux 5.8

![](assets/tested_on_4.15.png)

![](assets/tested_on_5.8.png)

File Snapshot


 [4.0K]  /data/pocs/2b543bf1864006099ac5c7beb75ee3259e3bbbf9
├── [4.0K]  assets
│   ├── [ 22K]  tested_on_4.15.png
│   └── [ 22K]  tested_on_5.8.png
├── [ 19K]  exploit.c
└── [ 330]  README.md

1 directory, 4 files

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