CVE-2019-18671

Description

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 5.93% Top 10%
Third-Party Advisory github.com Third-Party Advisory medium.com Third-Party Advisory medium.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/keepkey/keepkey-firmware/commit/b222c66cdd7c3203d917c80ba615082d309d80c3 third party advisory patch
https://medium.com/shapeshift-stories/keepkey-release-notes-v-6f7d2ec78065 third party advisory release notes
https://medium.com/shapeshift-stories/shapeshift-security-update-8ec89bb1b4e3 third party advisory
https://blog.inhq.net/posts/keepkey-CVE-2019-18671/

Frequently Asked Questions

What is the severity of CVE-2019-18671?
CVE-2019-18671 has been scored as a critical severity vulnerability.
How to fix CVE-2019-18671?
To fix CVE-2019-18671, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-18671 being actively exploited in the wild?
It is possible that CVE-2019-18671 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~6% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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