[Security] Bump actionpack from 5.2.4.5 to 5.2.6

[dependabot-preview]

Bumps actionpack from 5.2.4.5 to 5.2.6. This update includes security fixes.

Vulnerabilities fixed

Sourced from The GitHub Security Advisory Database.

Denial of Service in Action Controller Token Authentication Impact

Impacted code uses authenticate_or_request_with_http_token or authenticate_with_http_token for request authentication. Impacted code will look something like this:

class PostsController < ApplicationController
  before_action :authenticate
private
def authenticate
authenticate_or_request_with_http_token do |token, options|
# ...
end
end
end

... (truncated)

Affected versions: >= 2.0.0, <= 5.2.4.5

Sourced from The GitHub Security Advisory Database.

Information Disclosure / Unintended Method Execution in Action Pack Impact

There is a possible information disclosure / unintended method execution vulnerability in Action Pack when using the redirect_to or polymorphic_url helper with untrusted user input.

Vulnerable code will look like this.

redirect_to(params[:some_param])

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

Releases

The FIXED releases are available at the normal locations.

Workarounds

... (truncated)

Affected versions: >= 2.0.0, <= 5.2.4.5

Release notes

Sourced from actionpack's releases.

5.2.6

Active Support

• No changes.

Active Model

• No changes.

Active Record

• No changes.

Action View

• No changes.

Action Pack

• Accept base64_urlsafe CSRF tokens to make forward compatible.

  Base64 strict-encoded CSRF tokens are not inherently websafe, which makes them difficult to deal with. For example, the common practice of sending the CSRF token to a browser in a client-readable cookie does not work properly out of the box: the value has to be url-encoded and decoded to survive transport.

  In this version, we generate Base64 urlsafe-encoded CSRF tokens, which are inherently safe to transport. Validation accepts both urlsafe tokens, and strict-encoded tokens for backwards compatibility.

  How the tokes are encoded is controllr by the action_controller.urlsafe_csrf_tokens config.

  In Rails 5.2.5, the CSRF token format was accidentally changed to urlsafe-encoded.

  Atention: If you already upgraded your application to 5.2.5, set the config urlsafe_csrf_tokens to true, otherwise your form submission will start to fail during the deploy of this new version.

  Rails.application.config.action_controller.urlsafe_csrf_tokens = true

... (truncated)

Commits

• 4866154 Preparing for 5.2.6 release
• 4d68f67 Merge branch '5-2-sec' into 5-2-stable
• 2612683 Preparing for 5.2.4.6 release
• 9df84af Update changelog
• 3d9e9fd Prevent slow regex when parsing host authorization header
• 3eb9e74 Prevent string polymorphic route arguments
• 4fa8742 Fix "Exception: ActionView::Template::Error: wrong number of arguments (2 for...
• eaf001d Merge pull request #41806 from kamipo/backport_39076_to_6-0-stable
• 767acf6 Fix "Exception: ActionView::Template::Error: wrong number of arguments (2 for...
• a39e3e5 Revert "Fix "Exception: ActionView::Template::Error: wrong number of argument...
• Additional commits viewable in compare view

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