CVEs-PoC/2020/CVE-2020-25643.md

### [CVE-2020-25643](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25643)
![](https://img.shields.io/static/v1?label=Product&message=kernel&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-20&color=brighgreen)

### Description

A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

### POC

#### Reference
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=66d42ed8b25b64eb63111a2b8582c5afc8bf1105

#### Github
- https://github.com/DNTYO/F5_Vulnerability
- https://github.com/Live-Hack-CVE/CVE-2020-25643