SQL injection vulnerability in the Active Record component in Ruby on Rails before 3.0.18, 3.1.x before 3.1.9, and 3.2.x before 3.2.10 allows remote attackers to execute arbitrary SQL commands via a crafted request that leverages incorrect behavior of dynamic finders in applications that can use unexpected data types in certain find_by_ method calls.
https://groups.google.com/group/rubyonrails-security/msg/23daa048baf28b64?dmode=source&output=gplain
http://www.securityfocus.com/bid/57084
http://security.gentoo.org/glsa/glsa-201401-22.xml
http://rhn.redhat.com/errata/RHSA-2013-0544.html
http://rhn.redhat.com/errata/RHSA-2013-0220.html
http://rhn.redhat.com/errata/RHSA-2013-0155.html