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    CVE-2018-18920

    Py-EVM v0.2.0-alpha.33 allows attackers to make a vm.execute_bytecode call that triggers computation._stack.values with '"stack": [100, 100, 0]' where b'\x' was expected, resulting in an execution failure because of an invalid opcode. This is reportedly related to "smart contracts can be executed indefinitely without gas being paid."

    Published:Nov 12, 2018
    Last Modified:Nov 21, 2024
    EPS:Nov 12, 2018
    EPSS Score:0.00779
    CVSS Score:8.8

    Affected Products

    Vendor
    Ethereum
    Product
    Py-evm

    Exploits

    https://github.com/ethereum/py-evm/issues/1448https://github.com/ethereum/py-evm/issues/1448

    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