medium6.5
CVE-2020-14199
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…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Satoshilabs | Trezor Model T Firmware | before 2.3.1 |
| Satoshilabs | Trezor One Firmware | before 1.9.1 |