Buffer overflow in Keepkey
CVE-2019-18671
Insufficient checks in the USB packet handling of the ShapeShift KeepKey hardware wallet before firmware 6.2.2 allow out-of-bounds writes in the .bss segment via crafted messages. The vulnerability could allow code execution or other forms of impact. It can be triggered by unauthenticated attackers and the interface is reachable via WebUSB.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.033 (88.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/keepkey/keepkey-firmware/commit/b222c66cdd7c3203d917c80ba615082d309d… (Patch, Third Party Advisory)
- medium.com/shapeshift-stories/keepkey-release-notes-v-6f7d2ec78065 (Third Party Advisory, Release Notes)
- medium.com/shapeshift-stories/shapeshift-security-update-8ec89bb1b4e3 (Third Party Advisory)
- blog.inhq.net/posts/keepkey-CVE-2019-18671/
Frequently asked questions
- What is CVE-2019-18671?
- CVE-2019-18671 is a critical-severity vulnerability in Keepkey, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-12-06.
- How severe is CVE-2019-18671?
- Critical severity. CVSS v3 base score is 9.8 out of 10.