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.
References (4)
Core 4
Core References
Third Party Advisory x_refsource_misc
https://medium.com/shapeshift-stories/keepkey-release-notes-v-6f7d2ec78065
Patch, Third Party Advisory x_refsource_misc
https://github.com/keepkey/keepkey-firmware/commit/769714fcb569e7a4faff9530a2d9ac1f9d6e5680
Third Party Advisory x_refsource_confirm
https://medium.com/shapeshift-stories/shapeshift-security-update-8ec89bb1b4e3
Various Sources x_refsource_misc
https://blog.inhq.net/posts/keepkey-CVE-2019-18672/
Scores
CVSS v3
7.5
EPSS
0.0078
EPSS Percentile
51.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Details
CWE
CWE-354
Status
published
Products (1)
shapeshift/keepkey_firmware
< 6.2.2
Published
Dec 06, 2019
Tracked Since
Feb 18, 2026