facter, hiera, mcollective-client, and puppet affected by untrusted search path vulnerability

Untrusted search path vulnerability in Puppet Enterprise 2.8 before 2.8.7, Puppet before 2.7.26 and 3.x before 3.6.2, Facter 1.6.x and 2.x before 2.0.2, Hiera before 1.3.4, and Mcollective before 2.5.2, when running with Ruby 1.9.1 or earlier, allows local users to gain privileges via a Trojan horse file in the current working directory, as demonstrated using (1) rubygems/defaults/operating_system.rb, (2) Win32API.rb, (3) Win32API.so, (4) safe_yaml.rb, (5) safe_yaml/deep.rb, or (6) safe_yaml/deep.so; or (7) operatingsystem.rb, (8) operatingsystem.so, (9) osfamily.rb, or (10) osfamily.so in puppet/confine.