Debian Stretch DSA-4283-1 Critical: Ruby-Json-Jwt Auth Issue

It was discovered that ruby-json-jwt, a Ruby implementation of JSON web
tokens performed insufficient validation of GCM auth tags.

For the stable distribution (stretch), this problem has been fixed in
version 1.6.2-1+deb9u1.

We recommend that you upgrade your ruby-json-jwt packages.

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

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/