USN-4355-1: PulseAudio vulnerability

12 May 2020

PulseAudio could allow unintended access to snap packages.

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Releases

Packages

Details

PulseAudio in Ubuntu contains additional functionality to mediate audio
recording for snap packages and it was discovered that this functionality
did not mediate PulseAudio module unloading. An attacker-controlled snap
with only the audio-playback interface connected could exploit this to
bypass access controls and record audio.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 20.04
Ubuntu 19.10
Ubuntu 18.04
Ubuntu 16.04

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

References

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Further reading