CVE-2012-3424 Information

Description

The decode_credentials method in actionpack/lib/action_controller/metal/http_authentication.rb in Ruby on Rails 3.x before 3.0.16 3.1.x before 3.1.7 and 3.2.x before 3.2.7 converts Digest Authentication strings to symbols which allows remote attackers to cause a denial of service by leveraging access to an application that uses a with_http_digest helper method as demonstrated by the authenticate_or_request_with_http_digest method.

Reference

http://lists.opensuse.org/opensuse-updates/2012-08/msg00046.html http://rhn.redhat.com/errata/RHSA-2013-0154.html http://weblog.rubyonrails.org/2012/7/26/ann-rails-3-2-7-has-been-released/ https://groups.google.com/group/rubyonrails-security/msg/244d32f2fa25147d?hl=en&dmode=source&output=gplain