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    CVE-2021-29415

    The elliptic curve cryptography (ECC) hardware accelerator, part of the ARM® TrustZone® CryptoCell 310, contained in the NordicSemiconductor nRF52840 through 2021-03-29 has a non-constant time ECDSA implemenation. This allows an adversary to recover the private ECC key used during an ECDSA operation.

    Published:May 21, 2021
    Last Modified:Nov 21, 2024
    EPS:May 21, 2021
    EPSS Score:0.00081
    CVSS Score:5.5

    Affected Products

    Vendor
    Nordicsemi
    Product
    Nrf52840
    Vendor
    Nordicsemi
    Product
    Nrf52840 Firmware

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-203 Observable Discrepancy

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-189 Black Box Reverse Engineering

    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