Debian 8 Jessie DLA-1735-1 Critical Ruby2.1 Escape Injection Threat

CVE-2019-8320

A Directory Traversal issue was discovered in RubyGems. Before
making new directories or touching files (which now include
path-checking code for symlinks), it would delete the target
destination.

CVE-2019-8322

The gem owner command outputs the contents of the API response
directly to stdout. Therefore, if the response is crafted, escape
sequence injection may occur.

CVE-2019-8323

Gem::GemcutterUtilities#with_response may output the API response to
stdout as it is. Therefore, if the API side modifies the response,
escape sequence injection may occur.

CVE-2019-8324

A crafted gem with a multi-line name is not handled correctly.
Therefore, an attacker could inject arbitrary code to the stub line
of gemspec, which is eval-ed by code in ensure_loadable_spec during
the preinstall check.

CVE-2019-8325

An issue was discovered in RubyGems 2.6 and later through 3.0.2.
Since Gem::CommandManager#run calls alert_error without escaping,