Ubuntu.comUB:CVE-2020-11931CVE-2020-11931
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS
Percentile
12.6%
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;
Bugs
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 |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | pulseaudio | < 1:11.1-1ubuntu7.7 | UNKNOWN |
| ubuntu | 19.10 | noarch | pulseaudio | < 1:13.0-1ubuntu1.2 | UNKNOWN |
| ubuntu | 20.04 | noarch | pulseaudio | < 1:13.99.1-1ubuntu3.2 | UNKNOWN |
| ubuntu | 16.04 | noarch | pulseaudio | < 1:8.0-0ubuntu3.12 | UNKNOWN |
Related
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS
Percentile
12.6%