{"id":"UBUNTU-CVE-2020-11931","details":"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;","modified":"2026-04-22T12:27:26.919872Z","published":"2020-04-16T00:00:00Z","related":["USN-4355-1"],"upstream":["CVE-2020-11931"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-11931"},{"type":"REPORT","url":"https://forum.snapcraft.io/t/audio-switcher-pulseaudio-interface-auto-connect-request/16648/3"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4355-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-11931"}],"affected":[{"package":{"name":"pulseaudio","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/pulseaudio@1:8.0-0ubuntu3.12?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:8.0-0ubuntu3.12"}]}],"versions":["1:6.0-0ubuntu13","1:7.1-1ubuntu1","1:7.1-1ubuntu2","1:7.1-1ubuntu3","1:7.1-1ubuntu6","1:7.1-1ubuntu7","1:8.0-0ubuntu2","1:8.0-0ubuntu3","1:8.0-0ubuntu3.1","1:8.0-0ubuntu3.2","1:8.0-0ubuntu3.3","1:8.0-0ubuntu3.4","1:8.0-0ubuntu3.7","1:8.0-0ubuntu3.8","1:8.0-0ubuntu3.9","1:8.0-0ubuntu3.10","1:8.0-0ubuntu3.11"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libpulse-mainloop-glib0","binary_version":"1:8.0-0ubuntu3.12"},{"binary_name":"libpulse0","binary_version":"1:8.0-0ubuntu3.12"},{"binary_name":"libpulsedsp","binary_version":"1:8.0-0ubuntu3.12"},{"binary_name":"pulseaudio","binary_version":"1:8.0-0ubuntu3.12"},{"binary_name":"pulseaudio-esound-compat","binary_version":"1:8.0-0ubuntu3.12"},{"binary_name":"pulseaudio-module-bluetooth","binary_version":"1:8.0-0ubuntu3.12"},{"binary_name":"pulseaudio-module-droid","binary_version":"1:8.0-0ubuntu3.12"},{"binary_name":"pulseaudio-module-gconf","binary_version":"1:8.0-0ubuntu3.12"},{"binary_name":"pulseaudio-module-jack","binary_version":"1:8.0-0ubuntu3.12"},{"binary_name":"pulseaudio-module-lirc","binary_version":"1:8.0-0ubuntu3.12"},{"binary_name":"pulseaudio-module-raop","binary_version":"1:8.0-0ubuntu3.12"},{"binary_name":"pulseaudio-module-trust-store","binary_version":"1:8.0-0ubuntu3.12"},{"binary_name":"pulseaudio-module-x11","binary_version":"1:8.0-0ubuntu3.12"},{"binary_name":"pulseaudio-module-zeroconf","binary_version":"1:8.0-0ubuntu3.12"},{"binary_name":"pulseaudio-utils","binary_version":"1:8.0-0ubuntu3.12"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-11931.json"}},{"package":{"name":"pulseaudio","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/pulseaudio@1:11.1-1ubuntu7.7?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:11.1-1ubuntu7.7"}]}],"versions":["1:10.0-2ubuntu3","1:11.1-1ubuntu1","1:11.1-1ubuntu2","1:11.1-1ubuntu4","1:11.1-1ubuntu5","1:11.1-1ubuntu6","1:11.1-1ubuntu7","1:11.1-1ubuntu7.1","1:11.1-1ubuntu7.2","1:11.1-1ubuntu7.4","1:11.1-1ubuntu7.5"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libpulse-mainloop-glib0","binary_version":"1:11.1-1ubuntu7.7"},{"binary_name":"libpulse0","binary_version":"1:11.1-1ubuntu7.7"},{"binary_name":"libpulsedsp","binary_version":"1:11.1-1ubuntu7.7"},{"binary_name":"pulseaudio","binary_version":"1:11.1-1ubuntu7.7"},{"binary_version":"1:11.1-1ubuntu7.7","binary_name":"pulseaudio-equalizer"},{"binary_version":"1:11.1-1ubuntu7.7","binary_name":"pulseaudio-esound-compat"},{"binary_name":"pulseaudio-module-bluetooth","binary_version":"1:11.1-1ubuntu7.7"},{"binary_name":"pulseaudio-module-gconf","binary_version":"1:11.1-1ubuntu7.7"},{"binary_name":"pulseaudio-module-jack","binary_version":"1:11.1-1ubuntu7.7"},{"binary_name":"pulseaudio-module-lirc","binary_version":"1:11.1-1ubuntu7.7"},{"binary_name":"pulseaudio-module-raop","binary_version":"1:11.1-1ubuntu7.7"},{"binary_name":"pulseaudio-module-zeroconf","binary_version":"1:11.1-1ubuntu7.7"},{"binary_name":"pulseaudio-utils","binary_version":"1:11.1-1ubuntu7.7"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-11931.json"}},{"package":{"name":"pulseaudio","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/pulseaudio@1:13.99.1-1ubuntu3.2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:13.99.1-1ubuntu3.2"}]}],"versions":["1:13.0-1ubuntu1","1:13.0-1ubuntu4","1:13.0-1ubuntu5","1:13.0-3ubuntu1","1:13.0-3ubuntu2","1:13.99.1-1ubuntu1","1:13.99.1-1ubuntu2","1:13.99.1-1ubuntu3"],"ecosystem_specific":{"binaries":[{"binary_name":"libpulse-mainloop-glib0","binary_version":"1:13.99.1-1ubuntu3.2"},{"binary_name":"libpulse0","binary_version":"1:13.99.1-1ubuntu3.2"},{"binary_name":"libpulsedsp","binary_version":"1:13.99.1-1ubuntu3.2"},{"binary_version":"1:13.99.1-1ubuntu3.2","binary_name":"pulseaudio"},{"binary_name":"pulseaudio-equalizer","binary_version":"1:13.99.1-1ubuntu3.2"},{"binary_name":"pulseaudio-module-bluetooth","binary_version":"1:13.99.1-1ubuntu3.2"},{"binary_name":"pulseaudio-module-gsettings","binary_version":"1:13.99.1-1ubuntu3.2"},{"binary_name":"pulseaudio-module-jack","binary_version":"1:13.99.1-1ubuntu3.2"},{"binary_name":"pulseaudio-module-lirc","binary_version":"1:13.99.1-1ubuntu3.2"},{"binary_name":"pulseaudio-module-raop","binary_version":"1:13.99.1-1ubuntu3.2"},{"binary_name":"pulseaudio-module-zeroconf","binary_version":"1:13.99.1-1ubuntu3.2"},{"binary_name":"pulseaudio-utils","binary_version":"1:13.99.1-1ubuntu3.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-11931.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}