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    CVE-2021-43399

    The Yubico YubiHSM YubiHSM2 library 2021.08, included in the yubihsm-shell project, does not properly validate the length of some operations including SSH signing requests, and some data operations received from a YubiHSM 2 device.

    Published:Dec 8, 2021
    Last Modified:Nov 21, 2024
    EPS:Dec 8, 2021
    EPSS Score:0.00367
    CVSS Score:7.5

    Affected Products

    Vendor
    Yubico
    Product
    Yubihsm 2 Software Development Kit

    Exploits

    https://blog.inhq.net/posts/yubico-yubihsm-shell-vuln3/https://blog.inhq.net/posts/yubico-yubihsm-shell-vuln3/

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    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