For the oldstable distribution (stretch), these problems have been fixed
in version 2.3.3-1+deb9u7.
We recommend that you upgrade your ruby2.3 packages.
For the detailed security status of ruby2.3 please refer to its security
tracker page at:
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/
Get the latest Linux and open source security news straight to your inbox.