cve/2020/CVE-2020-27212.md

### [CVE-2020-27212](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27212)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

STMicroelectronics STM32L4 devices through 2020-10-19 have incorrect access control. The flash read-out protection (RDP) can be degraded from RDP level 2 (no access via debug interface) to level 1 (limited access via debug interface) by injecting a fault during the boot phase.

### POC

#### Reference
- https://eprint.iacr.org/2021/640
- https://eprint.iacr.org/2021/640
- https://www.aisec.fraunhofer.de/en/FirmwareProtection.html
- https://www.aisec.fraunhofer.de/en/FirmwareProtection.html

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