CVE-2017-12842

Description

Bitcoin Core before 0.14 allows an attacker to create an ostensibly valid SPV proof for a payment to a victim who uses an SPV wallet, even if that payment did not actually occur. Completing the attack would cost more than a million dollars, and is relevant mainly only in situations where an autonomous system relies solely on an SPV proof for transactions of a greater dollar amount.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 3.11% Top 15%
Vendor Advisory bitcoin.it
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures vendor advisory
https://bitslog.wordpress.com/2018/06/09/leaf-node-weakness-in-bitcoin-merkle-tree-design/ third party advisory
https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2019-February/016697.html third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-12842?
CVE-2017-12842 has been scored as a high severity vulnerability.
How to fix CVE-2017-12842?
To fix CVE-2017-12842, 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-2017-12842 being actively exploited in the wild?
It is possible that CVE-2017-12842 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.