actionpack/lib/action_dispatch/http/request.rb
in Ruby on Rails before 3.2.16 and 4.x before 4.0.2 does not properly consider differences in parameter handling between the Active Record component and the JSON implementation, which allows remote attackers to bypass intended database-query restrictions and perform NULL checks or trigger missing WHERE clauses via a crafted request that leverages (1) third-party Rack middleware or (2) custom Rack middleware. NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-0155.
lists.opensuse.org/opensuse-updates/2013-12/msg00079.html
lists.opensuse.org/opensuse-updates/2013-12/msg00081.html
lists.opensuse.org/opensuse-updates/2013-12/msg00082.html
lists.opensuse.org/opensuse-updates/2014-01/msg00003.html
rhn.redhat.com/errata/RHSA-2013-1794.html
rhn.redhat.com/errata/RHSA-2014-0008.html
rhn.redhat.com/errata/RHSA-2014-0469.html
weblog.rubyonrails.org/2013/12/3/Rails_3_2_16_and_4_0_2_have_been_released
www.debian.org/security/2014/dsa-2888
github.com/rails/rails
github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2013-6417.yml
groups.google.com/forum/#!topic/ruby-security-ann/niK4drpSHT4
groups.google.com/forum/message/raw?msg=ruby-security-ann/niK4drpSHT4/g8JW8ZsayRkJ
nvd.nist.gov/vuln/detail/CVE-2013-6417
puppet.com/security/cve/cve-2013-6417
web.archive.org/web/20160806051251/https://puppet.com/security/cve/cve-2013-6417