CVE-2020-11931

Ubuntu modifications to pulseaudio to provide snap security enforcement could be unloaded

LOW
3.3
CVSS Score
Published: May 15, 2020 at 03:25 AM UTC
Updated: June 17, 2026 at 02:51 AM UTC
2 products affected across 2 vendorsUbuntu LinuxPulseaudio

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Severity
LOW3.3
Exploit prediction
EPSS 0.3%

Description

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;

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 1.8.01:11.1 ≤ v < 1:11.1-1ubuntu7.71:13.0 ≤ v < 1:13.0-1ubuntu1.21:13.99.1 ≤ v < 1:13.99.1-1ubuntu3.21:8.0 ≤ v < 1:8.0-0ubuntu3.121:11.11:13.01:13.99.11:8.0
Affected range stops below 1:11.1-1ubuntu7.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 1:13.0-1ubuntu1.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 1:13.99.1-1ubuntu3.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 1:8.0-0ubuntu3.12, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

CVSS

3.3LOWcanonical
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-284CWE-668

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