CVE-2013-0277
ActiveRecord in Ruby on Rails before 2.3.17 and 3.x before 3.1.0 allows remote attackers to cause a denial of service or execute arbitrary code via crafted serialized attributes that cause the +serialize+ helper to deserialize arbitrary YAML.
Date published : 2013-02-12
http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html