[Security] Update rails requirement from >= 5.1.4, < 5.3.0 to >= 5.1.4, < 6.1.0

[dependabot-preview]

Updates the requirements on rails to permit the latest version.

Vulnerabilities fixed

Sourced from The GitHub Security Advisory Database.

Critical severity vulnerability that affects actionview

Denial of Service Vulnerability in Action View

Impact

Specially crafted accept headers can cause the Action View template location
code to consume 100% CPU, causing the server unable to process requests. This
impacts all Rails applications that render views.

All users running an affected release should either upgrade or use one of the
workarounds immediately.

Releases

The 6.0.0.beta3, 5.2.2.1, 5.1.6.2, 5.0.7.2, and 4.2.11.1 releases are
available at the normal locations.

Workarounds

This vulnerability can be mitigated by wrapping render calls with
respond_to blocks. For example, the following example is vulnerable:

... (truncated)

Affected versions: >= 5.2.0, <= 5.2.2

Sourced from The GitHub Security Advisory Database.

High severity vulnerability that affects actionview

File Content Disclosure in Action View

Impact

There is a possible file content disclosure vulnerability in Action View.
Specially crafted accept headers in combination with calls to render file:
can cause arbitrary files on the target server to be rendered, disclosing the
file contents.

The impact is limited to calls to render which render file contents without
a specified accept format. Impacted code in a controller looks something like
this:

class UserController < ApplicationController 
  def index 
    render file: "#{Rails.root}/some/file" 
  end 
end 

... (truncated)

Affected versions: >= 5.2.0, <= 5.2.2

Sourced from The GitHub Security Advisory Database.

Moderate severity vulnerability that affects railties

Possible Remote Code Execution Exploit in Rails Development Mode

Impact

With some knowledge of a target application it is possible for an attacker to
guess the automatically generated development mode secret token. This secret
token can be used in combination with other Rails internals to escalate to a
remote code execution exploit.

All users running an affected release should either upgrade or use one of the
workarounds immediately.

Releases

The 6.0.0.beta3 and 5.2.2.1 releases are available at the normal locations.

Workarounds

This issue can be mitigated by specifying a secret key in development mode.
In "config/environments/development.rb" add this:

... (truncated)

Affected versions: >= 5.2.0, <= 5.2.2

Release notes

Sourced from rails's releases.

5.2.4

Active Support

• Make ActiveSupport::Logger Fiber-safe. Fixes #36752.

  Use Fiber.current.__id__ in ActiveSupport::Logger#local_level= in order
  to make log level local to Ruby Fibers in addition to Threads.

  Example:

  logger = ActiveSupport::Logger.new(STDOUT)
  logger.level = 1
  p "Main is debug? #{logger.debug?}"
  
  Fiber.new {
    logger.local_level = 0
    p "Thread is debug? #{logger.debug?}"
  }.resume
  
  p "Main is debug? #{logger.debug?}"
  

  Before:

  Main is debug? false
  Thread is debug? true
  Main is debug? true
  

  After:

  Main is debug? false
  Thread is debug? true
  Main is debug? false
  

  Alexander Varnin

Active Model

• Type cast falsy boolean symbols on boolean attribute as false.

  Fixes #35676.

  Ryuta Kamizono

Active Record

• Fix circular autosave: true causes invalid records to be saved.

... (truncated)

Commits

• 8bec77c Preparing for 5.2.4 release
• 9e2a341 Preparing for 5.2.4.rc1 release
• c192bc3 Work with old versions of sidekiq
• 21cdceb Support Ruby 2.2
• 0e54ed1 Make the tests pass in versions of ruby that don't support sprockets 4
• c11581e Use rails() instead of system()
• 606cd4f Sprockets uses debug. not self. now
• f3993f9 Link .js from manifest.js in assets_test
• c2abbce Remove a javascript from test
• aeadae2 Use a stylesheet instead of a javascript in test
• Additional commits viewable in compare view

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[codecov-io]

Codecov Report

Merging #289 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #289   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files         179    179           
  Lines        2680   2680           
=====================================
  Hits         2680   2680

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