CVE-2020-14199
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
ProductSatoshilabs Trezor Model T Firmware
PublishedJun 16, 2020
First seenJun 16, 2020
How to fix
Update
- satoshilabs trezor_model_t_firmware2.3.1 or later
- satoshilabs trezor_one_firmware1.9.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| satoshilabs trezor_model_t_firmware | v < 2.3.1 | 2.3.1 |
| satoshilabs trezor_one_firmware | v < 1.9.1 | 1.9.1 |
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