CVE-2020-19861

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    CVE-2020-19861

    Published: 21 Jan 2022Last Modified: 20 Oct 2026

    Summary:

    Details: When a zone file in ldns 1.7.1 is parsed, the function ldns_nsec3_salt_data is too trusted for the length value obtained from the zone file. When the memcpy is copied, the 0xfe - ldns_rdf_size(salt_rdf) byte data can be copied, causing heap overflow information leakage.

    References: https://cwe.mitre.org/data/definitions/126.html, https://github.com/NLnetLabs/ldns/issues/51

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 53bc57512c19b11eebc403a4cb2bbf7295eb0db1
    Fixed -None

    Affected versions

    1.7.1

    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
    CVE-2020-19861 | CVE-DB