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    CVE-2020-24387

    An issue was discovered in the yh_create_session() function of yubihsm-shell through 2.0.2. The function does not explicitly check the returned session id from the device. An invalid session id would lead to out-of-bounds read and write operations in the session array. This could be used by an attacker to cause a denial of service attack.

    Published:Oct 19, 2020
    Last Modified:Nov 21, 2024
    EPS:Oct 19, 2020
    EPSS Score:0.00788
    CVSS Score:7.5

    Affected Products

    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Yubico
    Product
    Yubihsm-shell

    Exploits

    https://blog.inhq.net/posts/yubico-libyubihsm-vuln/https://blog.inhq.net/posts/yubico-libyubihsm-vuln/

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

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    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