CVE-2017-9230

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    CVE-2017-9230

    Published: 24 May 2017Last Modified: 10 Mar 2026

    Summary:

    Details: 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

    References: , http://www.securityfocus.com/bid/98657, https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2017-April/013996.html, https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2017-May/014349.html, https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2017-May/014351.html, https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2017-May/014352.html, http://www.mit.edu/~jlrubin//public/pdfs/Asicboost.pdf, https://arxiv.org/ftp/arxiv/papers/1604/1604.00575.pdf

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High