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.
CVSS 3.x
| Source | Score | Severity | Vector | Exploitability | Impact |
|---|---|---|---|---|---|
| nvd@nist.gov | 6.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N | 2.8 | 3.6 |
CVSS 2.0
Severity: MEDIUM
Problem Type: CWE-347,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| satoshilabs | trezor_model_t_firmware | * |
| satoshilabs | trezor_one_firmware | * |