Ruby Permissions Privileges and Access Controls Vulnerability - CVE-2013-2065
(1) DL and (2) Fiddle in Ruby 1.9 before 1.9.3 patchlevel 426 and 2.0 before 2.0.0 patchlevel 195 do not perform taint checking for native functions which allows context-dependent attackers to bypass intended SAFE level restrictions.