app/models/spree/user.rb in spree_auth_devise in Spree 1.1.x before 1.1.6, 1.2.x, and 1.3.x does not perform mass assignment safely when updating a user, which allows remote authenticated users to assign arbitrary roles to themselves.

References

• https://nvd.nist.gov/vuln/detail/CVE-2013-2506
• spree/spree_auth_devise@038d747
• spree/spree_auth_devise@fda3ab9
• https://web.archive.org/web/20131207040639/https://rubygems.org/gems/spree_auth_devise/versions
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/spree_auth/CVE-2013-2506.yml
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/spree_auth_devise/CVE-2013-2506.yml
• https://web.archive.org/web/20160331131233/https://spreecommerce.com/blog/multiple-security-vulnerabilities-fixed