CVE-2021-31616

Public Exploit

Description

Insufficient length checks in the ShapeShift KeepKey hardware wallet firmware before 7.1.0 allow a stack buffer overflow via crafted messages. The overflow in ethereum_extractThorchainSwapData() in ethereum.c can circumvent stack protections and lead to code execution. The vulnerable interface is reachable remotely over WebUSB.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 2.20% Top 20%
Vendor Advisory shapeshift.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/keepkey/keepkey-firmware/releases/tag/v7.1.0 third party advisory release notes
https://github.com/keepkey/keepkey-firmware/commit/e49d45594002d4d3fbc1f03488e6dfc0a0a65836 third party advisory patch
https://blog.inhq.net/posts/keepkey-CVE-2021-31616/ patch third party advisory exploit
https://shapeshift.com/library/keepkey-important-update-issued-april-4-required vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-31616?
CVE-2021-31616 has been scored as a high severity vulnerability.
How to fix CVE-2021-31616?
To fix CVE-2021-31616, 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-2021-31616 being actively exploited in the wild?
It is possible that CVE-2021-31616 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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