Multiple vulnerabilities were found in rubygems, which contains a package management framework for Ruby and a dependency manager for Ruby applications.
CVE-2021-43809
In bundler versions before 2.2.33, when working with untrusted and
apparently harmless `Gemfile`'s, it is not expected that they lead to
execution of external code, unless that's explicit in the ruby code inside
the `Gemfile` itself. However, if the `Gemfile` includes `gem` entries that
use the `git` option with invalid, but seemingly harmless, values with a
leading dash, this can be false. To handle dependencies that come from a
Git repository instead of a registry, Bundler uses various commands, such
as `git clone`. These commands are being constructed using user input
(e.g. the repository URL). When building the commands, Bundler versions
before 2.2.33 correctly avoid Command Injection vulnerabilities by passing
an array of arguments instead of a command string. However, there is the
possibility that a user input starts with a dash (`-`) and is therefore
treated as an optional argument instead of a positional one. This can lead
to Code Execution because some of the commands have options that can be
leveraged to run arbitrary executables.
CVE-2023-28755
A ReDoS issue was discovered in the URI component through 0.12.0 in Ruby
through 3.2.1. The URI parser mishandles invalid URLs that have specific
characters. It causes an increase in execution time for parsing strings to
URI objects.
CVE-2025-27221
The URI handling methods (URI.join, URI#merge, URI#+) have an inadvertent
leakage of authentication credentials because userinfo is retained even
after changing the host.
3.2.5-2+deb11u1