Uploaded
https://launchpad.net/ubuntu/+source/pulseaudio/1:13.99.1-1ubuntu5 to
groovy based on 1:13.99.1-1ubuntu4 from groovy-proposed.
** Changed in: pulseaudio (Ubuntu Groovy)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1877102
Title:
snap policy module can be unloaded, circumventing audio recording
restrictions for snaps
Status in pulseaudio package in Ubuntu:
Fix Committed
Status in pulseaudio source package in Xenial:
Fix Released
Status in pulseaudio source package in Bionic:
Fix Released
Status in pulseaudio source package in Eoan:
Fix Released
Status in pulseaudio source package in Focal:
Fix Released
Status in pulseaudio source package in Groovy:
Fix Committed
Bug description:
This collates information about a security vulnerability discussed in
email. It has been assigned CVE-2020-11931.
Ubuntu's PulseAudio package is shipped with a custom "module-snap-
policy" module intended to restrict snap confined clients from
recording audio unless they have the "audio-record" plug connected.
However, it does not restrict access to the "PA_COMMAND_UNLOAD_MODULE"
command.
This allows a snap that has only plugged "audio-playback" to request
that PulseAudio unload the security policy module, which in turn makes
it possible to record audio.
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https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1877102/+subscriptions
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