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CVE-2017-9230

7.5 · HIGH

The Bitcoin Proof-of-Work algorithm does not consider a certain attack methodology related to 80-byte block headers with a variety of initial 64-byte chunks followed by the same 16-byte chunk, mult…

Published May 24, 2017CWE-338EPSS 3.25%

Overview

CVE-2017-9230 is a high-severity vulnerability. It was published on May 24, 2017 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The Bitcoin Proof-of-Work algorithm does not consider a certain attack methodology related to 80-byte block headers with a variety of initial 64-byte chunks followed by the same 16-byte chunk, multiple candidate root values ending with the same 4 bytes, and calculations involving sqrt numbers. This violates the security assumptions of (1) the choice of input, outside of the dedicated nonce area, fed into the Proof-of-Work function should not change its difficulty to evaluate and (2) every Proof-of-Work function execution should be independent. NOTE: a number of persons feel that this methodology is a benign mining optimization, not a vulnerability

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.mit.edu/~jlrubin//public/pdfs/Asicboost.pdfRefwww.securityfocus.com/bid/98657Refarxiv.org/ftp/arxiv/papers/1604/1604.00575.pdfReflists.linuxfoundation.org/pipermail/bitcoin-dev/2017-April/013996.htmlReflists.linuxfoundation.org/pipermail/bitcoin-dev/2017-May/014349.htmlReflists.linuxfoundation.org/pipermail/bitcoin-dev/2017-May/014351.htmlReflists.linuxfoundation.org/pipermail/bitcoin-dev/2017-May/014352.htmlRefwww.mit.edu/~jlrubin//public/pdfs/Asicboost.pdfRefwww.securityfocus.com/bid/98657Refarxiv.org/ftp/arxiv/papers/1604/1604.00575.pdf

How CyberStrike helps

Frequently asked questions

What is CVE-2017-9230?

CVE-2017-9230 is a high-severity vulnerability. It was published on May 24, 2017 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2017-9230?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2017-9230?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-9230?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-9230 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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