lib/curl.rb in the Curl Gem for Ruby allows remote attackers to execute arbitrary commands via shell metacharacters in a URL.Referenceshttp://packetstormsecurity.com/files/120778/Ruby-Gem-Curl-Command-Execution.htmlhttp://www.osvdb.org/91230http://www.openwall.com/lists/oss-security/2013/03/19/9http://seclists.org/fulldisclosure/2013/Mar/124
