Home/CVE/An Ubuntu-specific modification to Pulseaudio to provide security mediation for Snap-packaged applications was found to
CVE

CVE-2020-11931

An Ubuntu-specific modification to Pulseaudio to provide security mediation for Snap-packaged applications was found to

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;.

LOW · CVSS 3.3 EPSS 0.00044
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-284Improper Access Control
CWE-668Exposure of Resource to Wrong Sphere
▤

Affected Products & Versions

2
pulseaudio<= 1.8.0
canonical ubuntu linuxall versions
▣

Scoring & Timeline

3.3
LOW · CVSS v3.1 · security@ubuntu.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD15 May 2020 · 04:15 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
⚑

Vendor Advisories

1
usnUSN-4355-1
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://forum.snapcraft.io/t/audio-switcher-pulseaudio-interface-auto-connect-request/16648/3Third Party Advisory
https://usn.ubuntu.com/4355-1/Third Party Advisory
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