CVE-2019-18672
High
Description
Insufficient checks in the finite state machine of the ShapeShift KeepKey hardware wallet before firmware 6.2.2 allow a partial reset of cryptographic secrets to known values via crafted messages. Notably, this breaks the security of U2F for new server registrations and invalidates existing registrations. This vulnerability can be exploited by unauthenticated attackers and the interface is reachable via WebUSB.
SeverityHigh
CVSS7.5
Exploit probability—
ProductShapeshift Keepkey Firmware
PublishedDec 6, 2019
First seenDec 6, 2019
How to fix
Update
- shapeshift keepkey_firmware6.2.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| shapeshift keepkey_firmware | v < 6.2.2 | 6.2.2 |
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