Advisory Weakness Curation

Active Record contains deserialization of arbitrary YAML 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.

Serialized Attributes YAML Vulnerability with Rails 2.3 and 3.0 There is a vulnerability in the serialized attribute handling code in Ruby on Rails, applications which allow users to directly assign to the serialized fields in their models are at risk of Denial of Service or Remote Code Execution vulnerabilities.