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    CVE-2023-27892

    Insufficient length checks in the ShapeShift KeepKey hardware wallet firmware before 7.7.0 allow a global buffer overflow via crafted messages. Flaws in cf_confirmExecTx() in ethereum_contracts.c can be used to reveal arbitrary microcontroller memory on the device screen or crash the device. With physical access to a PIN-unlocked device, attackers can extract the BIP39 mnemonic secret from the hardware wallet.

    Published:May 2, 2023
    Last Modified:Jan 30, 2025
    EPS:May 2, 2023
    EPSS Score:0.00039
    CVSS Score:3.8

    Affected Products

    Vendor
    Shapeshift
    Product
    Keepkey
    Vendor
    Shapeshift
    Product
    Keepkey Firmware

    Exploits

    https://blog.inhq.net/posts/keepkey-CVE-2023-27892/https://blog.inhq.net/posts/keepkey-CVE-2023-27892/

    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