Cross-site scripting (XSS) vulnerability in activesupport/lib/active_support/core_ext/string/output_safety.rb in Ruby on Rails 2.x before 2.3.13, 3.0.x before 3.0.10, and 3.1.x before 3.1.0.rc5 allows remote attackers to inject arbitrary web script or HTML via a malformed Unicode string, related to a "UTF-8 escaping vulnerability."

References

• https://nvd.nist.gov/vuln/detail/CVE-2011-2932
• rails/rails@bfc4325
• https://bugzilla.redhat.com/show_bug.cgi?id=731435
• http://groups.google.com/group/rubyonrails-security/msg/f1d2749773db9f21?dmode=source&output=gplain
• http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065114.html
• http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065189.html
• http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065212.html
• http://weblog.rubyonrails.org/2011/8/16/ann-rails-3-1-0-rc6
• http://www.openwall.com/lists/oss-security/2011/08/17/1
• http://www.openwall.com/lists/oss-security/2011/08/19/11
• http://www.openwall.com/lists/oss-security/2011/08/20/1
• http://www.openwall.com/lists/oss-security/2011/08/22/13
• http://www.openwall.com/lists/oss-security/2011/08/22/14
• http://www.openwall.com/lists/oss-security/2011/08/22/5
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activesupport/CVE-2011-2932.yml