[Security] Bump actionview from 5.2.2 to 5.2.2.1 (!1300) · Merge requests · thoughtbot, inc. / administrate

Closed Administrator requested to merge dependabot/bundler/actionview-5.2.2.1 into master Mar 13, 2019

Created by: dependabot-preview[bot]

Bumps actionview from 5.2.2 to 5.2.2.1. This update includes security fixes.

Vulnerabilities fixed

Sourced from The Ruby Advisory Database.

Denial of Service Vulnerability in Action View There is a potential denial of service vulnerability in actionview. This vulnerability has been assigned the CVE identifier CVE-2019-5419.

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.

Workarounds

This vulnerability can be mitigated by wrapping render calls with respond_to blocks. For example, the following example is vulnerable:
class UserController < ApplicationController
  def index
</tr></table> ... (truncated)

Patched versions: >= 6.0.0.beta3; \~> 5.2.2, >= 5.2.2.1; \~> 5.1.6, >= 5.1.6.2; \~> 5.0.7, >= 5.0.7.2; \~> 4.2.11, >= 4.2.11.1
Unaffected versions: none

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.

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

Changelog

Sourced from actionview's changelog.

Rails 5.2.2.1 (March 11, 2019)

No changes.

Commits

e69ff43 Prep release
7f5ccda Fix possible dev mode RCE
d7fac9c Only accept formats from registered mime types
See full diff in compare view

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