CVE-2020-11931
LOWpulseaudio < 1.8.0 - Improper Access Control via Snap Policy Module Unload
Title source: llmDescription
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 (2)
Core 2
Core References
Third Party Advisory x_refsource_misc
https://forum.snapcraft.io/t/audio-switcher-pulseaudio-interface-auto-connect-request/16648/3
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4355-1/
Scores
CVSS v3
3.3
EPSS
0.0004
EPSS Percentile
13.6%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Details
CWE
CWE-284
CWE-668
Status
published
Products (5)
canonical/ubuntu_linux
16.04
canonical/ubuntu_linux
18.04
canonical/ubuntu_linux
19.10
canonical/ubuntu_linux
20.04
pulseaudio/pulseaudio
< 1.8.0
Published
May 15, 2020
Tracked Since
Feb 18, 2026