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.

Local Privilege Escalation is a way to take advantage of flaws in code or service  administration that can manage regular or guest users for particular device activities or  transfer root user privileges to master or client. User rights admin. The licenses or  privileges may be violated by such undesired amendments, as the system may be disrupted  by frequent users unless they have shell or root authorization. So, someone, someone, it may become dangerous and be used to obtain access to a higher level. 

 [4.0K]  /data/pocs/30ea117af12a1c675decf430ee215a356fdc952a
└── [531K]  SNP _IT19961118.pdf

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