CVE-2019-13272 PoC — Linux kernel 权限许可和访问控制问题漏洞

Title:Linux kernel 权限许可和访问控制问题漏洞 (CVE-2019-13272)
Description:In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to create a ptrace relationship, which allows local users to obtain root access by leveraging certain scenarios with a parent-child process relationship, where a parent drops privileges and calls execve (potentially allowing control by an attacker). One contributing factor is an object lifetime issue (which can also cause a panic). Another contributing factor is incorrect marking of a ptrace relationship as privileged, which is exploitable through (for example) Polkit's pkexec helper with PTRACE_TRACEME. NOTE: SELinux deny_ptrace might be a usable workaround in some environments.

The exploit for CVE-2019-13272

# CVE-2019-13272
The exploit for CVE-2019-13272

漏洞类型：Linux本地提权

漏洞影响范围：Linux内核版本低于5.1.17

本地测试环境：

![](./system.jpg)

![](./cve-2019-13272.jpg)

漏洞相关信息：

https://bugs.chromium.org/p/project-zero/issues/detail?id=1903

 [4.0K]  /data/pocs/62fa874d82e9827bd3ce453e3d01884f7057965f
├── [ 12K]  cve-2019-13272_exp.c
├── [475K]  cve-2019-13272.jpg
├── [ 290]  README.md
└── [185K]  system.jpg

0 directories, 4 files