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Ruby on Rails Known Secret Session Cookie Remote Code Execution

This module implements Remote Command Execution on Ruby on Rails applications. Prerequisite is knowledge of the "secret_token" (Rails 2/3) or "secret_key_base" (Rails 4). The values for those can be usually found in the file "RAILS_ROOT/config/initializers/secret_token.rb". The module achieves RCE by deserialization of a crafted Ruby Object.

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Module Name

exploit/multi/http/rails_secret_deserialization

Authors

  • joernchen of Phenoelit <joernchen [at] phenoelit.de>

References

Targets

  • Automatic

Platforms

  • ruby

Architectures

  • ruby

Reliability

Development

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 exploit/multi/http/rails_secret_deserialization msf exploit(rails_secret_deserialization) > show targets ...targets... msf exploit(rails_secret_deserialization) > set TARGET <target-id> msf exploit(rails_secret_deserialization) > show options ...show and set options... msf exploit(rails_secret_deserialization) > exploit