UBUNTU-CVE-2019-13050

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    UBUNTU-CVE-2019-13050

    Published: 29 Jun 2019Last Modified: 4 Feb 2026
    Upstream:
    CVE-2019-13050
    Aliases:
    USN-5431-1

    Summary:

    Details: Interaction between the sks-keyserver code through 1.2.0 of the SKS keyserver network, and GnuPG through 2.2.16, makes it risky to have a GnuPG keyserver configuration line referring to a host on the SKS keyserver network. Retrieving data from this network may cause a persistent denial of service, because of a Certificate Spamming Attack.

    References: https://ubuntu.com/security/CVE-2019-13050, https://gist.github.com/rjhansen/67ab921ffb4084c865b3618d6955275f, https://lists.gnupg.org/pipermail/gnupg-announce/2019q3/000439.html, https://tech.michaelaltfield.net/2019/07/14/mitigating-poisoned-pgp-certificates/, https://ubuntu.com/security/notices/USN-5431-1, https://www.cve.org/CVERecord?id=CVE-2019-13050

    Affected packages

    Package

    Name: gnupg

    Purl: pkg:deb/ubuntu/[email protected]+esm2?arch=source&distro=esm-infra-legacy/trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.4.14-1ubuntu2
    1.4.15-1.1ubuntu1
    1.4.15-1.1ubuntu2
    1.4.15-2ubuntu1
    1.4.16-1ubuntu1
    1.4.16-1ubuntu2
    1.4.16-1ubuntu2.1
    1.4.16-1ubuntu2.3
    1.4.16-1ubuntu2.4
    1.4.16-1ubuntu2.5
    1.4.16-1ubuntu2.6
    1.4.16-1ubuntu2.6+esm1
    1.4.16-1ubuntu2.6+esm2

    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-2019-13050 | CVE-DB