Debian 10 Buster DLA-3450-1 Critical: Ruby2.5 Input Handling Issues

CVE-2021-33621

Hiroshi Tokumaru discovered that Ruby did not properly handle
certain user input for applications the generate HTTP responses
using cgi gem. An attacker could possibly use this issue to
maliciously modify the response a user would receive from a
vulnerable application.

CVE-2022-28739

It was discovered that Ruby incorrectly handled certain inputs.
An attacker could possibly use this issue to expose sensitive
information.

For Debian 10 buster, these problems have been fixed, along with the
regressions caused by the last Ruby update, in version 2.5.5-3+deb10u6.

We recommend that you upgrade your ruby2.5 packages.

For the detailed security status of ruby2.5 please refer to
its security tracker page at:


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