CVE-2023-27892
Low
Description
Insufficient length checks in the ShapeShift KeepKey hardware wallet firmware before 7.7.0 allow a global buffer overflow via crafted messages. Flaws in cf_confirmExecTx() in ethereum_contracts.c can be used to reveal arbitrary microcontroller memory on the device screen or crash the device. With physical access to a PIN-unlocked device, attackers can extract the BIP39 mnemonic secret from the hardware wallet.
SeverityLow
CVSS3.8
Exploit probability—
ProductShapeshift Keepkey Firmware
PublishedMay 2, 2023
First seenMay 2, 2023
Weakness typeCWE-120CWE-120
How to fix
Update
- shapeshift keepkey_firmware7.7.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| shapeshift keepkey_firmware | 7.5.2 ≤ v < 7.7.0 | 7.7.0 |
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