CVE-2020-11931
Published: 16 April 2020
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;
Notes
Author | Note |
---|---|
jdstrand | semi-public on 2020-04-16 the snap policy module is not included upstream and currently only exists in Ubuntu. This module was added in 1:12.2-0ubuntu2 in 18.10. pulseaudio 1:8.0-0ubuntu3.11 on 16.04 LTS added enforcing mediation pulseaudio 1:11.1-1ubuntu7.5 on 18.04 LTS added enforcing mediation initial CVSS calculation: attackVector: local, attackComplexity: low priviliegesRequired: low, userInteraction: none, scope: unchanged, confidentialityImpact: low, integrityImpact: none, availabilityImpact: none |
Priority
Status
Package | Release | Status |
---|---|---|
pulseaudio Launchpad, Ubuntu, Debian |
upstream |
Not vulnerable
|
trusty |
Does not exist
|
|
xenial |
Released
(1:8.0-0ubuntu3.12)
|
|
bionic |
Released
(1:11.1-1ubuntu7.7)
|
|
eoan |
Released
(1:13.0-1ubuntu1.2)
|
|
focal |
Released
(1:13.99.1-1ubuntu3.2)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 3.3 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | Low |
Integrity impact | None |
Availability impact | None |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |