Ubuntu Security Notices
USN-4640-1

USN-4640-1: PulseAudio vulnerability

Publication date

23 November 2020

Overview

PulseAudio could be made to expose sensitive information.

Releases

20.10 20.04 LTS 18.04 LTS 16.04 LTS

Packages

pulseaudio - PulseAudio sound server

Details

James Henstridge discovered that an Ubuntu-specific patch caused
PulseAudio to incorrectly handle snap client connections. An attacker
could possibly use this to expose sensitive information.

Update instructions

After a standard system update you need to restart your session to make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release	Package Version
20.10 groovy	libpulse-mainloop-glib0 – 1:13.99.2-1ubuntu2.1
	libpulse0 – 1:13.99.2-1ubuntu2.1
	libpulsedsp – 1:13.99.2-1ubuntu2.1
	pulseaudio – 1:13.99.2-1ubuntu2.1
	pulseaudio-equalizer – 1:13.99.2-1ubuntu2.1
	pulseaudio-module-bluetooth – 1:13.99.2-1ubuntu2.1
	pulseaudio-module-gsettings – 1:13.99.2-1ubuntu2.1
	pulseaudio-module-jack – 1:13.99.2-1ubuntu2.1
	pulseaudio-module-lirc – 1:13.99.2-1ubuntu2.1
	pulseaudio-module-raop – 1:13.99.2-1ubuntu2.1
	pulseaudio-module-zeroconf – 1:13.99.2-1ubuntu2.1
	pulseaudio-utils – 1:13.99.2-1ubuntu2.1
20.04 focal	libpulse-mainloop-glib0 – 1:13.99.1-1ubuntu3.8
	libpulse0 – 1:13.99.1-1ubuntu3.8
	libpulsedsp – 1:13.99.1-1ubuntu3.8
	pulseaudio – 1:13.99.1-1ubuntu3.8
	pulseaudio-equalizer – 1:13.99.1-1ubuntu3.8
	pulseaudio-module-bluetooth – 1:13.99.1-1ubuntu3.8
	pulseaudio-module-gsettings – 1:13.99.1-1ubuntu3.8
	pulseaudio-module-jack – 1:13.99.1-1ubuntu3.8
	pulseaudio-module-lirc – 1:13.99.1-1ubuntu3.8
	pulseaudio-module-raop – 1:13.99.1-1ubuntu3.8
	pulseaudio-module-zeroconf – 1:13.99.1-1ubuntu3.8
	pulseaudio-utils – 1:13.99.1-1ubuntu3.8
18.04 bionic	libpulse-mainloop-glib0 – 1:11.1-1ubuntu7.11
	libpulse0 – 1:11.1-1ubuntu7.11
	libpulsedsp – 1:11.1-1ubuntu7.11
	pulseaudio – 1:11.1-1ubuntu7.11
	pulseaudio-equalizer – 1:11.1-1ubuntu7.11
	pulseaudio-esound-compat – 1:11.1-1ubuntu7.11
	pulseaudio-module-bluetooth – 1:11.1-1ubuntu7.11
	pulseaudio-module-gconf – 1:11.1-1ubuntu7.11
	pulseaudio-module-jack – 1:11.1-1ubuntu7.11
	pulseaudio-module-lirc – 1:11.1-1ubuntu7.11
	pulseaudio-module-raop – 1:11.1-1ubuntu7.11
	pulseaudio-module-zeroconf – 1:11.1-1ubuntu7.11
	pulseaudio-utils – 1:11.1-1ubuntu7.11
16.04 xenial	libpulse-mainloop-glib0 – 1:8.0-0ubuntu3.15
	libpulse0 – 1:8.0-0ubuntu3.15
	libpulsedsp – 1:8.0-0ubuntu3.15
	pulseaudio – 1:8.0-0ubuntu3.15
	pulseaudio-esound-compat – 1:8.0-0ubuntu3.15
	pulseaudio-module-bluetooth – 1:8.0-0ubuntu3.15
	pulseaudio-module-droid – 1:8.0-0ubuntu3.15
	pulseaudio-module-gconf – 1:8.0-0ubuntu3.15
	pulseaudio-module-jack – 1:8.0-0ubuntu3.15
	pulseaudio-module-lirc – 1:8.0-0ubuntu3.15
	pulseaudio-module-raop – 1:8.0-0ubuntu3.15
	pulseaudio-module-trust-store – 1:8.0-0ubuntu3.15
	pulseaudio-module-x11 – 1:8.0-0ubuntu3.15
	pulseaudio-module-zeroconf – 1:8.0-0ubuntu3.15
	pulseaudio-utils – 1:8.0-0ubuntu3.15

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References

CVE-2020-16123

CVE-2020-16123