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Ubuntu Security Notice USN-5195-1
December 16, 2021

mumble vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

A security issue was fixed in Mumble.

Software Description:
- mumble: Low latency encrypted VoIP client

Details:

It was discovered that the Mumble client supported websites for public servers
with arbitrary URL schemes. If a user were tricked into visiting a malicious
website from the public server list, a remote attacker could possibly execute
arbitrary code.

Update instructions:

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

Ubuntu 20.04 LTS:
  mumble                          1.3.0+dfsg-1ubuntu0.1

Ubuntu 18.04 LTS:
  mumble                          1.2.19-1ubuntu1.1

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-5195-1
  CVE-2021-27229

Package Information:
  https://launchpad.net/ubuntu/+source/mumble/1.3.0+dfsg-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/mumble/1.2.19-1ubuntu1.1