Red Hat: RHSA-2016-0454 Important ActionPack & ActiveRecord Update Critical

The ror40 collection provides Ruby on Rails version 4.0. Ruby on Rails is a model-view-controller (MVC) framework for web application development.
The following issues were corrected in rubygem-actionpack:
Multiple directory traversal flaws were found in the way the Action View component searched for templates for rendering. If an application passed untrusted input to the 'render' method, a remote, unauthenticated attacker could use these flaws to render unexpected files and, possibly, execute arbitrary code. (CVE-2016-0752, CVE-2016-2097)
A code injection flaw was found in the way the Action View component searched for templates for rendering. If an application passed untrusted input to the 'render' method, a remote, unauthenticated attacker could use this flaw to execute arbitrary code. (CVE-2016-2098)
A flaw was found in the way the Action Pack component performed MIME type lookups. Since queries were cached in a global cache of MIME types, an attacker could use this flaw to grow the cache indefinitely, potentially resulting in a denial of service. (CVE-2016-0751)
A flaw was found in the Action Pack component's caching of controller references. An attacker could use this flaw to cause unbounded memory growth, potentially resulting in a denial of service. (CVE-2015-7581)
A flaw was found in the way the Action Controller component compared user names and passwords when performing HTTP basic authentication. Time taken to compare strings could differ depending on input, possibly allowing a remote attacker to determine valid user names and passwords using a timing attack. (CVE-2015-7576)
The following issue was corrected in rubygem-activerecord:
A flaw was found in the Active Record component's handling of nested attributes in combination with the destroy flag. An attacker could possibly use this flaw to set attributes to invalid values or clear all attributes. (CVE-2015-7577)
Red Hat would like to thank the Ruby on Rails project for reporting these issues. Upstream acknowledges John Poulin as the original reporter of CVE-2016-0752, Jyoti Singh and Tobias Kraze (makandra) as original reporters of CVE-2016-2097, Tobias Kraze (makandra) and joernchen (Phenoelit) as original reporters of CVE-2016-2098, Aaron Patterson (Red Hat) as the original reporter of CVE-2016-0751, Daniel Waterworth as the original reporter of CVE-2015-7576, and Justin Coyne as the original reporter of CVE-2015-7577.
All ror40 collection rubygem-actionpack and rubygem-activerecord packages users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. All running applications using the ror40 collection must be restarted for this update to take effect.