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    CVE-2020-27208

    The flash read-out protection (RDP) level is not enforced during the device initialization phase of the SoloKeys Solo 4.0.0 & Somu and the Nitrokey FIDO2 token. This allows an adversary to downgrade the RDP level and access secrets such as private ECC keys from SRAM via the debug interface.

    Published:May 21, 2021
    Last Modified:Nov 21, 2024
    EPS:May 21, 2021
    EPSS Score:0.00036
    CVSS Score:6.8

    Affected Products

    Vendor
    Nitrokey
    Product
    Fido2
    Vendor
    Nitrokey
    Product
    Fido2 Firmware
    Vendor
    Solokeys
    Product
    Solo
    Vendor
    Solokeys
    Product
    Solo Firmware
    Vendor
    Solokeys
    Product
    Somu
    Vendor
    Solokeys
    Product
    Somu Firmware

    Exploits

    https://www.aisec.fraunhofer.de/en/FirmwareProtection.htmlhttps://www.aisec.fraunhofer.de/en/FirmwareProtection.html

    Common Weakness Enumeration

    CWE-326 Inadequate Encryption Strength

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-112 Brute Force
    CAPEC-192 Protocol Analysis
    CAPEC-20 Encryption Brute Forcing

    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