The Active Record component in Ruby on Rails efore 2.3.15, 3.0.x before 3.0.14, 3.1.x before 3.1.6, and 3.2.x before 3.2.6 does not properly implement the passing of request data to a where method in an ActiveRecord class, which allows remote attackers to conduct certain SQL injection attacks via nested query parameters that leverage improper handling of nested hashes, a related issue to CVE-2012-2661.

References

• https://nvd.nist.gov/vuln/detail/CVE-2012-2695
• https://groups.google.com/group/rubyonrails-security/msg/aee3413fb038bf56?dmode=source&output=gplain
• http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00002.html
• http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00014.html
• http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00016.html
• http://lists.opensuse.org/opensuse-updates/2012-08/msg00046.html
• http://rhn.redhat.com/errata/RHSA-2013-0154.html
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activerecord/CVE-2012-2695.yml
• https://groups.google.com/g/rubyonrails-security/c/l4L0TEVAz1k/m/Vr84sD9B464J
• rails/rails@62f81f4