Ubuntu modifications to pulseaudio to provide snap security enforcement could be unloaded
CVE-2020-11931

3.3LOW

Key Information:

Vendor
Canonical
Status
Pulseaudio
Vendor
CVE Published:
15 May 2020

Summary

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 Version(s)

pulseaudio 1:8.0 < 1:8.0-0ubuntu3.12

pulseaudio 1:11.1 < 1:11.1-1ubuntu7.7

pulseaudio 1:13.0 < 1:13.0-1ubuntu1.2

References

https://forum.snapcraft.io/t/audio-switcher-pulseaudio-in...
x_refsource_MISC
https://usn.ubuntu.com/4355-1/
vendor-advisoryx_refsource_UBUNTU

CVSS V3.1

Score:
3.3
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

James Henstridge
.