Vulnerability in Shapeshift Keepkey Firmware
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.008 (54.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- medium.com/shapeshift-stories/keepkey-release-notes-v-6f7d2ec78065 (Third Party Advisory)
- github.com/keepkey/keepkey-firmware/commit/769714fcb569e7a4faff9530a2d9ac1f9d6e… (Patch, Third Party Advisory)
- medium.com/shapeshift-stories/shapeshift-security-update-8ec89bb1b4e3 (Third Party Advisory)
- blog.inhq.net/posts/keepkey-CVE-2019-18672/
Frequently asked questions
- What is CVE-2019-18672?
- CVE-2019-18672 is a high-severity vulnerability in Shapeshift Keepkey Firmware, classified under Improper Validation of Integrity Check Value. CVSS score: 7.5/10. Published 2019-12-06.
- How severe is CVE-2019-18672?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-18672 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.