CVE-2019-18672

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.

Score

CVSS 3.1 7.5 High

Status

Modified - cve@mitre.org

Published

2019-12-06

Last modified

2024-08-05

Weaknesses

CWE-354

Affected products

• Keepkey Firmware (Shapeshift)

References

• https://blog.inhq.net/posts/keepkey-CVE-2019-18672/
• https://github.com/keepkey/keepkey-firmware/commit/769714fcb569e7a4faff9530a2d9ac1f9d6e5680
• https://medium.com/shapeshift-stories/keepkey-release-notes-v-6f7d2ec78065
• https://medium.com/shapeshift-stories/shapeshift-security-update-8ec89bb1b4e3