cve/2020/CVE-2020-12400.md

### [CVE-2020-12400](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12400)
![](https://img.shields.io/static/v1?label=Product&message=Firefox%20for%20Android&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Firefox&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2080%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=P-384%20and%20P-521%20vulnerable%20to%20a%20side%20channel%20attack%20on%20modular%20inversion&color=brighgreen)

### Description

When converting coordinates from projective to affine, the modular inversion was not performed in constant time, resulting in a possible timing-based side channel attack. This vulnerability affects Firefox < 80 and Firefox for Android < 80.

### POC

#### Reference
No PoCs from references.

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