{"id":"UBUNTU-CVE-2020-16123","details":"An Ubuntu-specific patch in PulseAudio created a race condition where the snap policy module would fail to identify a client connection from a snap as coming from a snap if SCM_CREDENTIALS were missing, allowing the snap to connect to PulseAudio without proper confinement. This could be exploited by an attacker to expose sensitive information. Fixed in 1:13.99.3-1ubuntu2, 1:13.99.2-1ubuntu2.1, 1:13.99.1-1ubuntu3.8, 1:11.1-1ubuntu7.11, and 1:8.0-0ubuntu3.15.","modified":"2026-04-22T12:31:41.621007Z","published":"2020-11-23T17:00:00Z","related":["USN-4640-1"],"upstream":["CVE-2020-16123"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-16123"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4640-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-16123"}],"affected":[{"package":{"name":"pulseaudio","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/pulseaudio@1:8.0-0ubuntu3.15?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:8.0-0ubuntu3.15"}]}],"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","1:8.0-0ubuntu3.12","1:8.0-0ubuntu3.14"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1:8.0-0ubuntu3.15","binary_name":"libpulse-mainloop-glib0"},{"binary_version":"1:8.0-0ubuntu3.15","binary_name":"libpulse0"},{"binary_name":"libpulsedsp","binary_version":"1:8.0-0ubuntu3.15"},{"binary_name":"pulseaudio","binary_version":"1:8.0-0ubuntu3.15"},{"binary_name":"pulseaudio-esound-compat","binary_version":"1:8.0-0ubuntu3.15"},{"binary_name":"pulseaudio-module-bluetooth","binary_version":"1:8.0-0ubuntu3.15"},{"binary_name":"pulseaudio-module-droid","binary_version":"1:8.0-0ubuntu3.15"},{"binary_name":"pulseaudio-module-gconf","binary_version":"1:8.0-0ubuntu3.15"},{"binary_name":"pulseaudio-module-jack","binary_version":"1:8.0-0ubuntu3.15"},{"binary_name":"pulseaudio-module-lirc","binary_version":"1:8.0-0ubuntu3.15"},{"binary_name":"pulseaudio-module-raop","binary_version":"1:8.0-0ubuntu3.15"},{"binary_name":"pulseaudio-module-trust-store","binary_version":"1:8.0-0ubuntu3.15"},{"binary_name":"pulseaudio-module-x11","binary_version":"1:8.0-0ubuntu3.15"},{"binary_name":"pulseaudio-module-zeroconf","binary_version":"1:8.0-0ubuntu3.15"},{"binary_name":"pulseaudio-utils","binary_version":"1:8.0-0ubuntu3.15"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-16123.json"}},{"package":{"name":"pulseaudio","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/pulseaudio@1:11.1-1ubuntu7.11?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:11.1-1ubuntu7.11"}]}],"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","1:11.1-1ubuntu7.7","1:11.1-1ubuntu7.8","1:11.1-1ubuntu7.9","1:11.1-1ubuntu7.10"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libpulse-mainloop-glib0","binary_version":"1:11.1-1ubuntu7.11"},{"binary_name":"libpulse0","binary_version":"1:11.1-1ubuntu7.11"},{"binary_name":"libpulsedsp","binary_version":"1:11.1-1ubuntu7.11"},{"binary_name":"pulseaudio","binary_version":"1:11.1-1ubuntu7.11"},{"binary_version":"1:11.1-1ubuntu7.11","binary_name":"pulseaudio-equalizer"},{"binary_name":"pulseaudio-esound-compat","binary_version":"1:11.1-1ubuntu7.11"},{"binary_name":"pulseaudio-module-bluetooth","binary_version":"1:11.1-1ubuntu7.11"},{"binary_name":"pulseaudio-module-gconf","binary_version":"1:11.1-1ubuntu7.11"},{"binary_name":"pulseaudio-module-jack","binary_version":"1:11.1-1ubuntu7.11"},{"binary_name":"pulseaudio-module-lirc","binary_version":"1:11.1-1ubuntu7.11"},{"binary_version":"1:11.1-1ubuntu7.11","binary_name":"pulseaudio-module-raop"},{"binary_name":"pulseaudio-module-zeroconf","binary_version":"1:11.1-1ubuntu7.11"},{"binary_name":"pulseaudio-utils","binary_version":"1:11.1-1ubuntu7.11"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-16123.json"}},{"package":{"name":"pulseaudio","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/pulseaudio@1:13.99.1-1ubuntu3.8?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:13.99.1-1ubuntu3.8"}]}],"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","1:13.99.1-1ubuntu3.2","1:13.99.1-1ubuntu3.3","1:13.99.1-1ubuntu3.4","1:13.99.1-1ubuntu3.5","1:13.99.1-1ubuntu3.6","1:13.99.1-1ubuntu3.7"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libpulse-mainloop-glib0","binary_version":"1:13.99.1-1ubuntu3.8"},{"binary_name":"libpulse0","binary_version":"1:13.99.1-1ubuntu3.8"},{"binary_name":"libpulsedsp","binary_version":"1:13.99.1-1ubuntu3.8"},{"binary_name":"pulseaudio","binary_version":"1:13.99.1-1ubuntu3.8"},{"binary_name":"pulseaudio-equalizer","binary_version":"1:13.99.1-1ubuntu3.8"},{"binary_version":"1:13.99.1-1ubuntu3.8","binary_name":"pulseaudio-module-bluetooth"},{"binary_name":"pulseaudio-module-gsettings","binary_version":"1:13.99.1-1ubuntu3.8"},{"binary_name":"pulseaudio-module-jack","binary_version":"1:13.99.1-1ubuntu3.8"},{"binary_name":"pulseaudio-module-lirc","binary_version":"1:13.99.1-1ubuntu3.8"},{"binary_name":"pulseaudio-module-raop","binary_version":"1:13.99.1-1ubuntu3.8"},{"binary_version":"1:13.99.1-1ubuntu3.8","binary_name":"pulseaudio-module-zeroconf"},{"binary_name":"pulseaudio-utils","binary_version":"1:13.99.1-1ubuntu3.8"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-16123.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}