cve/2018/CVE-2018-20823.md

### [CVE-2018-20823](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20823)
![](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

The gyroscope on Xiaomi Mi 5s devices allows attackers to cause a denial of service (resonance and false data) via a 20.4 kHz audio signal, aka a MEMS ultrasound attack.

### POC

#### Reference
- https://hackaday.com/2018/07/17/freak-out-your-smartphone-with-ultrasound/
- https://hackaday.com/2018/07/17/freak-out-your-smartphone-with-ultrasound/
- https://medium.com/@juliodellaflora/ultrassom-pode-causar-anomalias-no-girosc%C3%B3pio-do-xiaomi-mi5s-plus-4050d718bc7f
- https://medium.com/@juliodellaflora/ultrassom-pode-causar-anomalias-no-girosc%C3%B3pio-do-xiaomi-mi5s-plus-4050d718bc7f

#### Github
- https://github.com/ARPSyndicate/cvemon