UBUNTU-CVE-2020-19860

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    UBUNTU-CVE-2020-19860

    Published: 21 Jan 2022Last Modified: 22 Apr 2026
    Upstream:
    CVE-2020-19860

    Summary:

    Details: When ldns version 1.7.1 verifies a zone file, the ldns_rr_new_frm_str_internal function has a heap out of bounds read vulnerability. An attacker can leak information on the heap by constructing a zone file payload.

    References: https://ubuntu.com/security/CVE-2020-19860, https://github.com/NLnetLabs/ldns/issues/50, https://github.com/NLnetLabs/ldns/commit/15d96206996bea969fbc918eb0a4a346f514b9f3, https://github.com/NLnetLabs/ldns/commit/4e9861576a600a5ecfa16ec2de853c90dd9ce276, https://ubuntu.com/security/notices/USN-5257-1, https://ubuntu.com/security/notices/USN-5257-2, https://www.cve.org/CVERecord?id=CVE-2020-19860

    Affected packages

    Package

    Name: ldns

    Purl: pkg:deb/ubuntu/[email protected]+esm1?arch=source&distro=esm-infra/xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.6.17-8ubuntu0.1+esm1

    Affected versions

    1.6.17-5
    1.6.17-7
    1.6.17-8
    1.6.17-8ubuntu0.1

    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
    UBUNTU-CVE-2020-19860 | CVE-DB