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    CVE-2019-20398

    A NULL pointer dereference is present in libyang before v1.0-r3 in the function lys_extension_instances_free() due to a copy of unresolved extensions in lys_restr_dup(). Applications that use libyang to parse untrusted input yang files may crash.

    Published:Apr 29, 2019
    Last Modified:Nov 21, 2024
    EPS:Jan 22, 2020
    EPSS Score:0.00206
    CVSS Score:6.5

    Affected Products

    Vendor
    Cesnet
    Product
    Libyang
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    https://github.com/CESNET/libyang/issues/773https://github.com/CESNET/libyang/issues/773

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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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