actionpack/lib/action_view/template/text.rb in Action View in Ruby on Rails 3.x before 3.2.17 converts MIME type strings to symbols during use of the :text option to the render method, which allows remote attackers to cause a denial of service (memory consumption) by including these strings in headers.

References

• https://nvd.nist.gov/vuln/detail/CVE-2014-0082
• http://lists.opensuse.org/opensuse-updates/2014-02/msg00081.html
• http://openwall.com/lists/oss-security/2014/02/18/10
• http://rhn.redhat.com/errata/RHSA-2014-0215.html
• http://rhn.redhat.com/errata/RHSA-2014-0306.html
• http://www.getchef.com/blog/2014/04/09/enterprise-chef-11-1-3-release/
• https://web.archive.org/web/20201207044540/https://groups.google.com/forum/message/raw?msg=rubyonrails-security/LMxO_3_eCuc/ozGBEhKaJbIJ
• https://web.archive.org/web/20220315115444/https://puppet.com/security/cve/cve-2014-0082
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2014-0082.yml