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    CVE-2019-19331

    knot-resolver before version 4.3.0 is vulnerable to denial of service through high CPU utilization. DNS replies with very many resource records might be processed very inefficiently, in extreme cases taking even several CPU seconds for each such uncached message. For example, a few thousand A records can be squashed into one DNS message (limit is 64kB).

    Published:Dec 16, 2019
    Last Modified:Nov 21, 2024
    EPS:Dec 16, 2019
    EPSS Score:0.00299
    CVSS Score:7.5

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Nic
    Product
    Knot Resolver

    Exploits

    https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19331https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19331

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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