UBUNTU-CVE-2020-11931

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    UBUNTU-CVE-2020-11931

    Published: 16 Apr 2020Last Modified: 22 Apr 2026
    Upstream:
    CVE-2020-11931
    Aliases:
    USN-4355-1

    Summary:

    Details: An Ubuntu-specific modification to Pulseaudio to provide security mediation for Snap-packaged applications was found to have a bypass of intended access restriction for snaps which plugs any of pulseaudio, audio-playback or audio-record via unloading the pulseaudio snap policy module. This issue affects: pulseaudio 1:8.0 versions prior to 1:8.0-0ubuntu3.12; 1:11.1 versions prior to 1:11.1-1ubuntu7.7; 1:13.0 versions prior to 1:13.0-1ubuntu1.2; 1:13.99.1 versions prior to 1:13.99.1-1ubuntu3.2;

    References: https://ubuntu.com/security/CVE-2020-11931, https://forum.snapcraft.io/t/audio-switcher-pulseaudio-interface-auto-connect-request/16648/3, https://ubuntu.com/security/notices/USN-4355-1, https://www.cve.org/CVERecord?id=CVE-2020-11931

    Affected packages

    Package

    Name: pulseaudio

    Purl: pkg:deb/ubuntu/pulseaudio@1:8.0-0ubuntu3.12?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:8.0-0ubuntu3.12

    Affected versions

    1:6.0-0ubuntu13

    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-2020-11931 | CVE-DB