Debian: DSA-4402-1 Moderate: Mumble Service Disruption Vulnerability

It was discovered that insufficient restrictions in the connection
handling of Mumble, a low latency encrypted VoIP client, could result in
denial of service.

For the stable distribution (stretch), this problem has been fixed in
version 1.2.18-1+deb9u1.

We recommend that you upgrade your mumble packages.

For the detailed security status of mumble please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/mumble

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/