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

Source
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
Readme
# CVE-2021-22555-Exploit
CVE-2021-22555 Exploit

By Andy Nguyen

## INFO
A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space


## 編譯
```
gcc -m32 -static -o exploit exploit.c
./exploit
```

## 測試版本
Exploit tested on Ubuntu 5.8.0-48-generic and COS 5.4.89+.
File Snapshot

[4.0K] /data/pocs/6d0fd5cb6332b4d004d5bab57d061666d8270226 ├── [ 22K] cve_2021_22555.c ├── [699K] exploit └── [ 433] README.md 0 directories, 3 files
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