Описание
Denial of Service in Action Dispatch
Impact
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.
Patches
To aid users who aren't able to upgrade immediately we have provided patches for the two supported release series. They are in git-am format and consist of a single changeset.
- 6-0-Prevent-catastrophic-backtracking-during-mime-parsin.patch - Patch for 6.0 series
- 6-1-Prevent-catastrophic-backtracking-during-mime-parsin.patch - Patch for 6.1 series
Please note that only the 6.1.Z, 6.0.Z, and 5.2.Z series are supported at present. Users of earlier unsupported releases are advised to upgrade as soon as possible as we cannot guarantee the continued availability of security fixes for unsupported releases.
Credits
Thanks to Security Curious security...@pm.me for reporting this!
Ссылки
- https://nvd.nist.gov/vuln/detail/CVE-2021-22902
- https://hackerone.com/reports/1138654
- https://discuss.rubyonrails.org/t/cve-2021-22902-possible-denial-of-service-vulnerability-in-action-dispatch/77866
- https://github.com/rails/rails/releases/tag/v6.0.3.7
- https://github.com/rails/rails/releases/tag/v6.1.3.2
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2021-22902.yml
- https://groups.google.com/g/rubyonrails-security/c/_5ID_ld9u1c
Пакеты
actionpack
>= 6.0.0, <= 6.0.3.6
6.0.3.7
actionpack
>= 6.1.0, <= 6.1.3.1
6.1.3.2
Связанные уязвимости
The actionpack ruby gem (a framework for handling and responding to web requests in Rails) before 6.0.3.7, 6.1.3.2 suffers from a possible denial of service vulnerability in the Mime type parser of Action Dispatch. Carefully crafted Accept headers can cause the mime type parser in Action Dispatch to do catastrophic backtracking in the regular expression engine.
The actionpack ruby gem (a framework for handling and responding to web requests in Rails) before 6.0.3.7, 6.1.3.2 suffers from a possible denial of service vulnerability in the Mime type parser of Action Dispatch. Carefully crafted Accept headers can cause the mime type parser in Action Dispatch to do catastrophic backtracking in the regular expression engine.
The actionpack ruby gem (a framework for handling and responding to web requests in Rails) before 6.0.3.7, 6.1.3.2 suffers from a possible denial of service vulnerability in the Mime type parser of Action Dispatch. Carefully crafted Accept headers can cause the mime type parser in Action Dispatch to do catastrophic backtracking in the regular expression engine.
The actionpack ruby gem (a framework for handling and responding to we ...
Уязвимость обработчика регулярных выражений парсера Mime-типа функционала Action Dispatch фреймворка actionpack ruby gem программной платформы Ruby on Rails, связанная с неконтролируемым расходом ресурсов, позволяющая нарушителю вызвать отказ в обслуживании