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Ruby on Rails Action View MIME Memory Exhaustion

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Ruby on Rails Action View MIME Memory Exhaustion



This module exploits a Denial of Service (DoS) condition in Action View that requires a controller action. By sending a specially crafted content-type header to a Rails application, it is possible for it to store the invalid MIME type, and may eventually consume all memory if enough invalid MIMEs are given. Versions 3.0.0 and other later versions are affected, fixed in 4.0.2 and 3.2.16.


  • Toby Hsieh
  • joev <joev@metasploit.com>
  • sinn3r <sinn3r@metasploit.com>


Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':

msf > use auxiliary/dos/http/rails_action_view
msf auxiliary(rails_action_view) > show actions
msf auxiliary(rails_action_view) > set ACTION < action-name >
msf auxiliary(rails_action_view) > show options
    ...show and set options...
msf auxiliary(rails_action_view) > run 

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