cve/2020/CVE-2020-14199.md

### [CVE-2020-14199](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14199)
![](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

BIP-143 in the Bitcoin protocol specification mishandles the signing of a Segwit transaction, which allows attackers to trick a user into making two signatures in certain cases, potentially leading to a huge transaction fee. NOTE: this affects all hardware wallets. It was fixed in 1.9.1 for the Trezor One and 2.3.1 for the Trezor Model T.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/0xT11/CVE-POC
- https://github.com/ARPSyndicate/cvemon
- https://github.com/developer3000S/PoC-in-GitHub
- https://github.com/hectorgie/PoC-in-GitHub
- https://github.com/nomi-sec/PoC-in-GitHub
- https://github.com/nondejus/CVE-2020-14199
- https://github.com/soosmile/POC
- https://github.com/uvhw/conchimgiangnang