CVEs-PoC/2021/CVE-2021-25500.md

### [CVE-2021-25500](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25500)
![](https://img.shields.io/static/v1?label=Product&message=Samsung%20Mobile%20Devices&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=Select%20Q(10.0)%2C%20R(11.0)%20devices%20with%20Exynos%20980%2C%209820%2C%209830%2C%202100%20chipset%3C%20SMR%20Nov-2021%20Release%201%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-20%3A%20Improper%20Input%20Validation&color=brighgreen)

### Description

A missing input validation in HDCP LDFW prior to SMR Nov-2021 Release 1 allows attackers to overwrite TZASC allowing TEE compromise.

### POC

#### Reference
- https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=11

#### Github
No PoCs found on GitHub currently.