Multiple format string vulnerabilities in log_subscriber.rb files in the log subscriber component in Action Mailer in Ruby on Rails 3.x before 3.2.15 allow remote attackers to cause a denial of service via a crafted e-mail address that is improperly handled during construction of a log message.

References

• https://nvd.nist.gov/vuln/detail/CVE-2013-4389
• GHSA-rg5m-3fqp-6px8
• http://lists.opensuse.org/opensuse-updates/2013-12/msg00091.html
• http://lists.opensuse.org/opensuse-updates/2013-12/msg00094.html
• http://lists.opensuse.org/opensuse-updates/2014-01/msg00003.html
• http://www.debian.org/security/2014/dsa-2887
• http://www.debian.org/security/2014/dsa-2888
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionmailer/CVE-2013-4389.yml
• https://web.archive.org/web/20201208175929/https://groups.google.com/forum/message/raw?msg=ruby-security-ann/yvlR1Vx44c8/elKJkpO2KVgJ