CVE-2005-2337
Ruby 1.6.x up to 1.6.8, 1.8.x up to 1.8.2, and 1.9.0 development up to 2005-09-01 allows attackers to bypass safe level and taint flag protections and execute disallowed code when Ruby processes a program through standard input (stdin).
Date published : 2005-10-07
http://lists.apple.com/archives/security-announce/2006/May/msg00003.html