Possible Open Redirect in Host Authorization Middleware
There is a possible open redirect vulnerability in the Host Authorization
middleware in Action Pack. This vulnerability has been assigned the CVE
identifier CVE-2021-22881.
Specially crafted "Host" headers in combination with certain "allowed host"
formats can cause the Host Authorization middleware in Action Pack to redirect
users to a malicious website.
Impacted applications will have allowed hosts with a leading dot. For
example, configuration files that look like this:
There is a possible Denial of Service vulnerability in Action Dispatch.
Carefully crafted Accept headers can cause the mime type parser in Action
Dispatch to do catastrophic backtracking in the regular expression engine.
Releases
The fixed releases are available at the normal locations.
Workarounds
The following monkey patch placed in an initializer can be used to work around
the issue.
module Mime
class Type
MIME_REGEXP = /\A(?:\*\/\*|#{MIME_NAME}\/(?:\*|#{MIME_NAME})(?>\s*#{MIME_PARAMETER}\s*)*)\z/
end
</tr></table>
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
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.
Possible DoS Vulnerability in Action Controller Token Authentication
There is a possible DoS vulnerability in the Token Authentication logic in
Action Controller. This vulnerability has been assigned the CVE identifier
CVE-2021-22904.
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
Possible Information Disclosure / Unintended Method Execution in Action Pack
There is a possible information disclosure / unintended method execution
vulnerability in Action Pack which has been assigned the CVE identifier
CVE-2021-22885.
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.
Possible Denial of Service vulnerability in Action Dispatch
There is a possible Denial of Service vulnerability in the Mime type parser of
Action Dispatch. This vulnerability has been assigned the CVE identifier
CVE-2021-22902.
There is a possible Denial of Service vulnerability in Action Dispatch.
Carefully crafted Accept headers can cause the mime type parser in Action
Dispatch to do catastrophic backtracking in the regular expression engine.
Workarounds
The following monkey patch placed in an initializer can be used to work around
the issue:
Possible Denial of Service vulnerability in Action Dispatch
There is a possible Denial of Service vulnerability in the Mime type parser of
Action Dispatch. This vulnerability has been assigned the CVE identifier
CVE-2021-22902.
There is a possible Denial of Service vulnerability in Action Dispatch.
Carefully crafted Accept headers can cause the mime type parser in Action
Dispatch to do catastrophic backtracking in the regular expression engine.
Workarounds
The following monkey patch placed in an initializer can be used to work around
the issue:
Possible Information Disclosure / Unintended Method Execution in Action Pack
There is a possible information disclosure / unintended method execution
vulnerability in Action Pack which has been assigned the CVE identifier
CVE-2021-22885.
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.
Possible DoS Vulnerability in Action Controller Token Authentication
There is a possible DoS vulnerability in the Token Authentication logic in
Action Controller. This vulnerability has been assigned the CVE identifier
CVE-2021-22904.
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
Possible Open Redirect in Host Authorization Middleware
There is a possible open redirect vulnerability in the Host Authorization
middleware in Action Pack. This vulnerability has been assigned the CVE
identifier CVE-2021-22881.
Specially crafted "Host" headers in combination with certain "allowed host"
formats can cause the Host Authorization middleware in Action Pack to redirect
users to a malicious website.
Impacted applications will have allowed hosts with a leading dot. For
example, configuration files that look like this:
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Bumps actionpack from 6.0.3.4 to 6.1.4. This update includes security fixes.
Vulnerabilities fixed
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Commits
8321702
Preparing for 6.1.4 releasee71539c
Update CHANGELOG8877b88
Merge pull request #42153 from kevinsjoberg/ignore-file-fixtures-on-load5b4466d
Merge pull request #41609fab5a81
Merge pull request #42437 from HParker/digest-find-parent-controller-template3bbf3ac
Merge pull request #42244 from hahmed/fix-invalid-statement-compile-errord83a318
Merge pull request #42283 from HParker/named-routes-identifies-false255b5ff
Fix compatibility with psych 4.xd18ada7
Make Rubocop happy adding extra spaces4829fae
Merge branch '6-1-sec' into 6-1-stableDependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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