module

Ruby on Rails JSON Processor YAML Deserialization Code Execution

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Disclosed
2013-01-28
Created
2018-05-30

Description

This module exploits a remote code execution vulnerability in the
JSON request processor of the Ruby on Rails application framework.
This vulnerability allows an attacker to instantiate a remote object,
which in turn can be used to execute any ruby code remotely in the
context of the application. This vulnerability is very similar to
CVE-2013-0156.

This module has been tested successfully on RoR 3.0.9, 3.0.19, and
2.3.15.

The technique used by this module requires the target to be running a
fairly recent version of Ruby 1.9 (since 2011 or so). Applications
using Ruby 1.8 may still be exploitable using the init_with() method,
but this has not been demonstrated.

Authors

jjarmoc
egypt egypt@metasploit.com
lian

Platform

Ruby

Architectures

ruby

References

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_json_yaml_code_exec
    msf exploit(rails_json_yaml_code_exec) > show targets
        ...targets...
    msf exploit(rails_json_yaml_code_exec) > set TARGET < target-id >
    msf exploit(rails_json_yaml_code_exec) > show options
        ...show and set options...
    msf exploit(rails_json_yaml_code_exec) > exploit
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